6.11.86 nagheze mantegh.pdf

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    !"#$%&'(

    #)*+,-)*.&'(

    /(0!$1

    2'#!"3#

    +!$1!45/6$!"

    4157#$

    8/9:

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    $9@

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    fZR#$("mQ 0/ _0=D_f-9rf!$9

    +rDst"0ub""v#$0H_=$_f8_(?RD8_1

    =.&'(_k*C=^"+m'0:=0/K=&'(0

    8_?@DL(_+1 =.&'(_k*

    /0 I AAm B (AB)((CA)(CB))m B (AB)((BC)(AC))

    _; C (A(BC))(B(AC))9w C* A((AB)B)

    xZ9w C** ((AA)B)By3A W (A(AB))(AB)

    (y3A W~ (A(A~A))(A~A)

    stm_Ym2lb Dis A(BC) (AB)C

    z#{&RQ EM A~A2k)A|Y5 DNE ~~AA2k)Al DNI A~~A

    )A^ Con (AB)(~B~A)|Y5)A^ Con (~A~B)( BA)

    }rf4p!(!$ CM (A~A)~ACM (~AA) ACM1 A~(A~A)

    CM2 A~(A~A)

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    C

    C=^"+m'0

    3E^"+m K A(BA)(^"+m K ~A(AB)

    )*(f}!$~4 EFQ (A~A)B

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    :

    :=0/

    _q L$7" L$7" ' 0

    /40 # ,- .&'( QRS

    = QR+S

    2QS

    + ?dS

    {x | } "$S

    + };$S

    U T W t gdS F I f ]Y"S

    ~ ~ )*S

    2_l1(A B ) =\ ~ ( A ~ B ) & (A + B ) =\ ( ~ A B )

    &_ (A B ) =\ ( ~ A B ) QR 0/1(A B ) =\ ( A B ) ( B A ) QR+

    (A B ) =\ ( A B ) ( B A ) 'QR+

    T =\p p ogd/ F =\p p o]Y"/

    t =\p ( p p) ,"rgd/ ]Y"+gdS1f =\ ~ p ( p p) ,"r]Y"/ W =\p ( p p)

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    K

    /12_l1,-)*=\ A f~ A =\ A F

    )*S1#)* A =

    \A F

    9R)*%% A =\ A F/b9R)*A =\ A f

    '/bn,-#

    S

    QR/b/k

    /b/b+

    */b

    */k

    */b+

    /bB( A t )=\( A B )2_l/k( B f )A=\( A B )QR0/b+( B f )( A t )=\( A B )

    /b*/bB( A

    W )=

    \

    ( A B )*/k( B I )A=\( A B )*/b+( B I )( A W )=\( A B )

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    N

    K=&'(0

    QR QR &'(0

    9R 9R &'( JL$7" L$7" &'( K

    '+b +b . &'( E' . &'( R' !/0 . &'( ER' #L$7" . &'( CR' ,-+#L$7" . &'( CR*

    ' ` . &'( NR' *L$7" . &'( KR

    QR `l/bQR &'(0

    /b /$ . &'( OR/k

    !/0 . &'( LR

    /b+

    ,-L$7" . &'( DR

    */b 9; . &'( WR*/k

    8/ . &'( PR

    */b+ 8/,9; . &'( PWR

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    )AD.&'(DL$7"&'()A5Z=*D/0_f

    .&'((!*1

    2#jD)*(ft#}-0p!(!$>A , ~ A B]jH0)*(/00DTA , ~ A B , ~ Bpj#@*DFA B , ~ A B j}-p!(!$t#}-0fA'(0=GA B ~ B

    .&'()A,-)AI)A$*,r,-8*_f(L$7"&'(#)AB9=8_?#+r-;stL_Y-H_=8_

    &'(,!$(o;+!t+z53)AS+$!-.,=

    m !&*57'dfub)AS2_l,RH0=8_)*(+)*D)AD)Af(357'd=

    =)A$}-L_+,"?/D$_=C=)*($)A/+$not+,f0

    _;&'(d=:=)A}-}-,")Af?d5$_=K=)*($,r)A+`_}-L_'"}1A~A=

    1. EFQ: Ex Falso Quodlibet2. Equivalence of Contractins3. Disjunctive Syllogism4 EQT: Ex Quodlibet True5. De Morgan Negation6. Boolean Negation

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    P

    "(";#)A)A(lD#!RD0-(lD0-+D)*"+=

    (_ ;D,("!Z$)*f)A+)Af)*(D)*(l+R

    D;+)A)AS,i,-+#j"2_l0R1

    #)A10)*(4!0A ~ A B,-)A10)*(4!/0

    i,-8*$H"5)A8_=jA ~ A B

    !1/3#nL$7"&'()A_#)A,+R_,-)A

    /3#n.&'()A,R=,(D,!fZU8_^D!"Y-/+_mCVV/}#)A$"

    &'(+DH0f,*.$+b_,sZR+8_,!fi&'((l_b_+jL_"L_}_1

    =,-!$-riPKVj"nnD+b__'$&'(,"(+ Db_f$Z_/+8#(l3Q,f;|7ZC=`p;iKNjb_ ," A'( ! +|0"+$Z

    +r$)6&'(fb_8_(8*=

    ,-DH_*&'(8*D)AZ(R1f38*8_

    jD2k)ACjD)A^:jS(!8kAS/!;~i)*(S(!jDKj8kASS(!~iz#{&RQ=j

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    H_*&'(c+""c'(*D@+'")AD,-&*nd!5+R-f$8_Rc'}H_*&'(,!Z

    +t!8*

    Nj,-8*

    R3{=)A@"'")AD8*8_$")A+$0

    )A'"@0=J,(o`,"A'(D,-|7ZDH!-",*7b_""

    -]-iUCNKj`$,rPU?$+9!_+#r+"?/

    9#$d:UV$p+,r=!($0"`b_08_+80v`/!58__R+!,-+b_f!Z$&'("

    l3Q,ff!Z$"RH_*&'(+!D+5Db_$=_,H!,*_;&'(&'(+`3;+$&'l*+`/!58_"0

    f"5-9RD-f$+1/4D+8_f+$_/40ft9/4D/D`3;

    \,/4ft_0$,D_\0+$0A A B

    D}-&'(j4!08kAS/!;+)*($(01

    A ~ A B

    $,!f,$+,!,-}!_,\

    7="312')A~?@)A+)A?@~)A2'=+r_R_D_'$&'("H$)A,*8_R,5d01"$~_};$+$_};~"

    $=!"#$%&'()*$!+

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    U

    } _ , # )A + ` 3; , } R , ,1/0/4H_9/4L_9(+(!0_H090=\/4D/0

    D_/0,/4p+f0$1

    A A = B BA'(3+1

    Pj)*(H09(#0fi(v"/0(l_jH0+`l(!0},

    i(l_A ~ A+B ~ B__}!j=M

    A ~ A B ~ B

    (_Cf!o":f!o"+$:d]r"$8_}! ;/+R;R;=L_}!(!0\(!/+]v"+09(}-+8__"0f+(!0}_,-4!)*("$#58_0

    H09(,-H0f(!,=

    (D8_/4H/!5,/0L$7"&'()A`3;=+H058_fZD_AH_+r1

    8=H0H0+$L_++f(!0;++fDL/0+12lb8_

    H0,/03H0+f$,_Wf8!R+Rf=H0}-++0_(!0gd+0_f]v"=}-/0D38_H0]v"0f=$,`lD+3=+b(l_,`l

    H0f=$=r=}-D8_$D^_#0}-_L_`l\(!/}-+\(!/00"7`l]v"*=}-D38_/\(!/0}-+(!$,fH0.30

    }-";.30=H0$3*,`ly"$,r`Q=H0}-3{,_,8!R(l$.30=}-f"$ub+H0'`60

    /+,r,H00H0(o0_L_,(R`l+f=H0+b9o3"*3$f$8m=,rff+L/0Z.++bD]Y"Dgd DWf";

    ,--S+(!0i_fDb_D_}D_}!DA'(n+*7ZD*A5D/!;D!Z(RjRrH0"Rf,`lDH0+(!0f}=

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    V

    2#jD)*(ft#}-0p!(!$OA , ~ A BA A B

    ]jH0)*(/00D>XA , ~ A B , ~ BA A = B B

    pj*#@>>+A B , ~ A B ( A B ) A B

    j}-p!(!$t#}-0fA'(0=>TA B ~ AA B B+

    2#jD,rH/!/4L_!R/40/4_fD$]j/4/0(!0+90Dpj/4L_H/!!R+/4/4,rS/!;/4_fD+/4f

    +$

    j/40?RD,rH/!/4L_S/!;$

    !"#$%

    $=r=_f#)A,#tf_^_#EFQ___1^_#U:"#dEFQ(4^_#++r!Z+b`d,(UK(o0D

    Zq`d8_x_}CK(Zf;8_"08_"-/4!_(m?dU("2lk=

    ^_#D;+8_U+U:Cq8!Z$f^mD0$4!8_"EFQ#)A5_+?/6,_ZDo+(("9r8!_Ym};=

    D^_#EFQD+Z"$+r_f,0D^_#`a!$ZR1

    1. A ~ A A2. A 2Q|Y5ij3. ~ A 2Q|Y5ij4. A B ?dliCj5. B #@*i:+Kj

    9. EFQ: Ex Falso Quodlibet10. Equivalence of Contractins11. Disjunctive Syllogism12 EQT: Ex Quodlibet True

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    ",(o$?dl+2Q|Y59_*+?RD`a!$8_DH(

    ,_+,*+,rA$+$H_*&'(89"5f_}#@*+$=

    _?d(o+H_*&'($D8_(8!_Ymf_}-D9EFQH!0=

    &'()*+,

    D^_#`a!$HnH9#)A,#t?#8_iL$7"&'(+j,r5n$=+/fnrD.&'(H!,*DL_l+58_,+f$R7

    *5"QR+)*`3*?(R!R=&'(8_}o0)*(fD0/)*(/0++r$,H00(!,=&'(8_0)A!-f,

    "A!($&'(+,-=&'(8_9;f0D(!_YmqL$7"&'(f$$fH6!+!$!3`a!$_=r=+#)A\^_#

    $m)*(ft#}-p!(!$=

    -%.!"#$%/

    $ma!$8_0$m$R^_#&'(R.+}

    `3Aq$13!l#@*,-)A,}R8_+ .&'(,0=!H("+r_^_#`a!$1

    ^_#`a!$1

    1. A ~ A A2. A 2Q|Y5ij3. ~ A 2Q|Y5ij4. A B

    ?dliCj5. B #@*i:+Kj

    $m0+H_+D?@D.&'($m^$+H(_01

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    C

    $m012#1$$2Q|Y5i,U:VjD]1l?d$$im?9_+U::jD

    p1$$#@*i.&'(jD1'p!(!$'l!i"+#/_fUN-DUN_/$+UNUj=

    D`+$mub"H__p!(!$"$",BfA B'(l_DAft_fA4!'=

    D}D+$mm_+D;}-2_l6,/-D"}$"4!;0!/0D6}-"i`/6j_AiSbj}

    (R;=?dlm_+D$8_A A B}-/6=D9o$mub-,1(o0A ~ A}-0~ A+A B4!

    +8_+0DZDB4!(0DA ~ A/B04!_f}-L_4!4!+l!p!(!$'R3}-,r4!

    $mA01

    `+$m+DZZD?@+2'(l(01

    }-+\/;,+-f$(l2'D`+$m(iD.&'(c7'd_+&(lj/}-+-f$f"$ub++$}-LLgd,0

    m=;++_f}-+,1="A+B}!A$C=A+B+H0H0L/"}!A(!0=

    q"$ub+DR8(o-"$"@*+(l,"$!9,r(l3!m+lD+_f(!(lL_/;+8_++

    ,rDa+/;D_+Df"$u_@R=++9D.&'(

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    :

    DD/;+8_*@9+_(l9DD++Z+D2Q+&=

    ;_#L_8!R+#d,"mDAA5D,$mD8_(

    $,r=8_##+$}-0}!)A+2'_r",r,"$}-0}!)A+&_r"$8_D$m,q#!;

    $"'#8_,D++=(3D+$m(l_$""fm"$!R4!0!;++}#

    A=,(oD?dl6d+$$DR&,r"-!5DR8_$9_DH!-"=,/_L_9(D8_(_A?d(l(_,r+

    H("1

    -?@}-f_gd+b(l0i(lD.&'(c7'd+&_jH_r/}-+f_gdf"$ub+_gd+b,

    -4!=iqA)Af#p!(!$(l?@-D.&'(c7'd_f0t*_?dl*H_f,r'}!$}!}-L_gd

    0t}-0)Aj=$m9o`a!$+p!(!$l"/0?#}D$D

    $_\*+`3*=

    QR?6D!3#&'(z53+/*"Dl3Q,f0Z(_0lD$dZD/bQR(l,r"(Dl3Q,f0"ZQR"R

    l="("yD/]+2#L_,$*Rl*(("gd_f}-++1

    =2#-Rl*]*f$$+rDC=-8/Z2#+r$Rl*]D-

    /8_f"-4!,

    :=8/Z*f$2#-^mRi=_mCVVxDPNj

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    K

    "$;8_!+CQR/0hR+(!0/b0iceteris paribusj9r$ R YZ= 9 8(o /0 hR10}o _ , { y

    iother things being equal=j/bQRD/C_fdH_(?"-

    _r1K=D0}o_,{y8/Z2#+r$Rl*]-

    D-

    ,(o"A"bZ*f,$yD/0hRDH($k=&*?6.$+5fR`E8_QRl!$D

    ,+K$1#A"#5D],R?nRf$3K$3?nRf,R0}o_,{+]i*f,$D/;f=j

    @73*"f,rD_DQRlD6b8_;$DR/D^_#`a!$t$m,(QRl"R;!8__("

    #!R'#8/k!$="/b+&'(l+ DQR0++"$!8_3{^_#`a!$*/b+&'}!$D}-0+)*(,

    /D/b}!$l+$+/R`a!$8_t$m=

    .&'($mi$$mj!R,r}#@*,$(3&'(((""$)*(l.,i$m",(o++D`+0

    QR+?dD2Q(lDD9oj=

    )*+,-%.

    #@*iH0|7Z"9_Dk*(_/j+3!lD#)A$3!lD,-)A1

    (AB)AB(AB)~AB

    !_(0&'(D3!l#@*D,r"A'(8#+D,"rf

    UN$=#@*D,"rZD;+8_,(8$*d*f

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    N

    "lq"$4(_!?dqH"5*D,r*+$b`/0H"5*(!0q_k*0=qD8_(,D#@*D

    `,$*_k*0*=8_,"rZ_r"$0R

    _$-r}_/=!!RDR,"rq#@*3!;!""8#+

    "(+,$!_9rdZ!5=+8_f9r!R0"&'(3`$_f#@*D,f,r+!RY-f=(UUxxi?A

    `$D,$8#/08_fnr0f+"("UND*3!0+#@DDR$Dl*+D#@*_R"9(m8_+5,$

    +"4r$!Z!R8(o$m1o(lL_f^mf+?,$D

    8_$m"$!-_RD]Z====};D(+,$"l,rf}#t+r#@*,#t8_&'(0 ,Zb/R

    (!t=

    '0123#

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    2lbfA}-!*+D+8_f$A/0!~A}-B&_QD04!2lb}-D#+AB//0~A}-B04!=D_30"

    (EFQi)*(f}-0p!(!$j_Y#@*"$_}-R="4rf,7'EFQ$9_}#@*,7'D$9_

    +?#1,9;9(#@*lb+(l_8/0$*?"+-f$0

    lb+,9;+-f$0/gd8/0("=lb+8_+}-L_"0

    (DskAA+~ A(D$}-+(!0gdDB_#@*D$]v"D*=8_gdf;AB/-"-4!,~ A^m$gdB}

    gd_f$gdABgdfA+r$gdfH_B=

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    #

    8_"$ub++?#+(!0_fD`+$m#@*`'D?QL/)*(ft#p!(!$,"`a!$+)*(ft#p!(!$`'+(

    ?$!#@*`'^_#R=,++?#$8R+}1"!lb+;+D,rskA+}-L_Dgd

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    41$51

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    oD58_+"`'DA#dD_b_+-?$};

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    )*gd._RdH_+r1

    L$7"&'(~Alb+x$gdAxR]v"&'(.~Alb+x$gdAx*R]v"

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    !$i*j,9;+lD.&'(L!/$)*gd._R0ilb++0j+$+!$i,rD8#+_f+++UPC~i++_

    D+`+DW/0j#A `$UPC"l=j\+!$

    _!/0"$7lHo,rcRfDHRm=DL!/$8_;D++__}-1,r0UP:L$7")AD

    .&'(3Est+UPK+}st8_)A+0D&'(DD0CRiClassical Relevant logicj+CR*"5Q=i?@&'(+8_N"cRH_j=

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    RL_+,r+_0+8_Sb"H(";D5+H50

    d-f$=#A+f^m++_UP:+UPKf"+-#+++-,- + " !$D57'd# )A+,- )A+?l;

    8_}_;L$7")A+')A"_&(o0DR"c7'd+8_8#+("_$(R=CR*_fgd._RD)*+8_D

    1

    #)*Alb+x$gdAxR]v"

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    _`-f$L$7"+.&'(,-f$D_;08_++L$7".&'(D"CR*,(9=_;+)A/+D&'(8_

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    #)A5_+,-)A5=y!,mD08_&'($$m"_,/0_f";!.,+^_#`a!$,_0

    DRif_(l,D#d,"m(l_l,.ZD0

    ,--#!R'#,Ro+0j&'($mD_d,}.+R1&'(f)*(l9r)*(lD.,

    L$7")A$#)A,/0",-)A&'(""D!Z$_;$(3!fL$7"&'("=

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    $+},-)*+'QR(l__;+"-qL$7"=

    8_A'(!_L_y+*_L$7"&'(+.&'(Dd_L_`/"+=

    DH!-",(o++_UP:#ADL$7".&'(DL$7"_#)A3Est'q++}.&'(L$7"CR+"l`$Dl#AL$7".&'(CD#)A,+}",.&'(Z+

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    L$7".8m-f$+=`$_]UPK#AD.&'(_;#dD)*8!R",

    L$7"#D&'(R!-,r+9,(L$7"&'(_m.&'(,

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    -qL$7"D",(o`-U::9;+&'(T"!$L$7"&'(>F,/#+UNP&'(9;+0S1S5^_#fR!-L$7"&'(-q=

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    ;+-.R+.&'(,$f",?_+(?"k*(

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    +fr,"0_0}o

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    CV

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    p [ p ( p A ~ A B ) ]

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    H__f1

    CR ( A ~ A ) [ ( ( A ~ A ) ( A ~ A ) ) B ]CRp [ p ( p A ~ A B ) ]

    qH__fR$}8_"$1

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    &'(R#)Afs_/=)AdD.&'(s_/&'(W++

    14. Display Logic

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    CK

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    2_l11. (A B ) =\ ~ ( A ~ B ) &2. (A + B ) =

    \( ~ A B )

    &_3. (A B ) =\ ( ~ A B ) QR4. (A B ) =\ ( A B ) ( B A ) QR+5. (A B ) =\ ( A B ) ( B A ) 'QR+ 6. T =\p p ogd/7. F =\p p o]Y"/8.

    t =\p ( p p) "rgd/,

    9. f =\ ~ p ( p p) ,"r]Y"/

    4_0*D,f"*,"H0(_r1-A+B+`p+

    q}-!(RA(p)+A(q/p)+A(B/p)+A(q//p)+A(B//p)`=Dub*;__f1

    =f@AA(p)}-!"$#p!",rDL_DH"$$=

    C=f@AA(q/p)}-!,*f?d5#q/0;pA(p)$(_h+pA(p)!$(qR3=

    :=f@AA(q//p),*f?d5#}-!qkl_/0;pA(p)$(_h+pA(p)!$(qR3=

    K=f@AA(B/p)`,*f?d5#B/0;pA(p)

    $(_h+pA(p)!$(;0BR3=N=f@AA(B//p),*f?d5#`Bkl_/0;p

    A(p)$(_h+pA(p);0!$(BR3=

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    KV

    ?@":R+

    )*Sz6"4rf_$z6f,;0,r?A!QD"D.&'(3Est!DZmR+*$D,+}^$+H0

    )*R+8!Z$+RH_fm=d8#+&'(,rfDb?dW+.&'((|#+,_D+,

    UC `$ @R f s " $&'( (_ !Z(R ,9; A'( ?6,8R!$"D+7$-_UUC3Est"4rfDZm,rlDRdD(

    d8_DL,r(stfD|#++r)*st(H_=d,("$.&'(3Est(H("1

    &'(D|#+#A!f`$fsRY-f^mD8of_"+RUNVD&'(+D_fo+}#rUN?A!QDD|#+f?A!+_L_f

    .&'(R(!Z$=^mfD+8_(+,$UC""8#+&'(.!Z(R&'(L_ER&'(H#D_;ZRL_,(+,++

    W+m (f8_,-RD"l=d(8_D#A$8_0&'((stf3Est"|#+#A3"L.=

    st}3Est!5(+,$Lo"0/HA0"QQRstf,~i}!$stjstD@+'stD'stD

    ``stDd;0+r,8t$},r(+L_;0=8_D_f$d(H_+r1

    R?@":O5E

    d(`+1UNV

    /09w

    limjy3A

    A AA ((A B) B)(A B) ((B C) (A C))(A (A B)) (A B)

    IC*BW

    d(+1oUN

    /0_;

    limjy3A

    A A(A (B C)) (B (A C))(A B) ((C A) (C B))(A (A B)) (A B)

    ICBW

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    K

    d($1(+,$UC

    f9;+xZ9w

    limjl_fZ

    A ((A A) A)((A A) B) B(A B) ((B C) (A C))(A (B C)) ((A B) (A C))

    DC**BS

    d(D++`+8!td(}!$st.&'(Dt_qf+Wf(!0(=id|#+(UC}!$stp(}!$st%kA

    $ +r=jf!d( 8_ $f 9;+ ?d |Y5 " $DDA ((A A) A)'qD,rfD9;+EDxZ9w`-+H$C**D((A A) B) BqH("|Y5}DTH$=3E^"+m,+}i_*

    2lbjfL_0d(0DR_&'(9R$=

    KR:O??@":2Q|Y5(A B)A

    (A B)BE

    2Q2lbl[(AB) (AC)][A (BC)]Im*AdjunctionA , BA BAd

    l?dA(A B)B(A B)

    I

    ?d2lb|Y5[(AC) (BC)][(A B)C]E

    stm2lb_YmDistribution

    (A (B C))((A B) C)

    Dis

    ",(o/QRf?A!D.&'(@+'stDH(R=8_3$

    k*0"$D9(";+L$7"&'(!5+.&'(2Q0?d+R!R=D8(/0.&'('st"H(stf;,

    q+$2Q(f@st+r@/"$@st,+r-;=2Q$?dD,-8*&3Q";+,8_D8(/0

    "2_l2_l8_H_!Z)*+H!0&'(3Est"4rf ,_Ym=?dDL$7"&'(H!R?d|Y5+2Ql*01

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    KC

    li*j2QA ( B (AB))I|Y5i*j?d(AC) [ (BC)((A B)C)]E

    ?d2lk?#^"+m"$8_?d|Y5+2Ql0('0K(4=

    stmSb?d+'`dm*,+}?#$8_@`d_Ym1r3{ _f (!3{?* Sb?d + *8_ D' `d _L/"(f9

    ^"+m?d(_0K&'("$Rk5=)*+,?251GOP$,$%B

    p!(!$ D$( D.&'(D_9(DRl3Qp!(!$W+"4rf,/#L3$9(.&'(l3QH_+r1

    stm_Ym

    A (B C)(A B) (A C)

    S A

    S A B

    S B A

    S A

    S B

    S A B

    S , A B

    S - {A} A B

    l

    A (B C)

    (A B) (A C)

    S A B

    S , A C

    S , B C

    S , S - {A , B} C

    S A B

    S AS B

    S A B

    S A

    S , S B

    |

    Y5

    (+,$UPN+r,/#+L3$f3"DfD](Qf}0m"Z9r"vH("=

    .&'(+L$7"&'(l3Qp!(!$*H9+$!$1(_`+y/4D2Ql/4D?d|Y5(_+R,__0

    y0C(R,__$++AA+B*(_$+stmR+}__Ymi =stmQ+*+fL_*8!RD_YmstmQ

    _"D`+*8_ma|Q(l_D?d2Q**+,r8!R+("stm*/0,$R9(Dd$_Ym=

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    K:

    8_(l(lD?d+2Q*"$8_H_}_"_!+(l_Dp!(!$,f(l(l$D=D4(_

    |7ZD!9'QR(lDZ"$'p!(!$(lDp!(!$

    !9ZRf\+QR(l"L$7"p!(!$=f0D+8_(l;+?d+2QL$7"0=

    SR*1'9T

    f_,r,+}"_03$.&'(0fR`$0f+R`a!$$80+0"+R&ifusionj$=D]b/D&"D=+$\/;,+-f$(lD8_

    /RR2lk'"+=oDH"$&lW+9;+.&'(1=u_d2_li"

    $dD&D,rjC=_l(!2i$D&D,r"j:=?dL_QR+Sbi$2_lD3#n"jK=QRSb?d+i2_lD3#n"

    =ji0td,-

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    KK

    H0(;*D.&'("$8_D8_?#-0+$3{?*0f(0Z`lDQR+Sb?d+2_lDR**8_=

    $Sb?dL_fs,D$W+1

    `d&b1

    A ( B ( A B ) ) &l [( A ( B C ) ) ( ( A B ) C ) ] &|Y5

    $D+W+W+8_L_o/$3&l?d,

    $aQR+$=3RD&l?d"$8_D_*0

    l3Qp!(!$q&l=2_l Sb?d+8_,`l3{(";_f,0Da(!1

    Sb?d2_lf,01_f`";,rf

    ( A B ) ( A B )

    k*$;k*Da2_l(D_H$1A ( B ( A B ) )

    k*8_D-$D("{a2_l$o}!$1

    ( ( A B ) C ) ( A ( B C ) )

    ,02_lSb?df1

    1 A ( B ( A B ) ) Sb?d2 ( B ( A B ) ) [ ( ( A B ) C ) ( B C ) ] Sb?dB

    3 A [ ( ( A B ) C ) ( B C ) ] QRli+Cj

    4 ( ( A B ) C ) ( A ( B C ) ) A_4;i:j

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    KN

    )*(fH("2_lu_dQ&H0t-^8*+

    )A2k)A+H!0=H_Dd8_1

    1 A ( B ( A B ) ) k*2 A ( ~ ( A B ) ~ B ) )A^3 ~ ( A B ) ( A ~ B ) A_4;C4 ~ ( A ~ B ) ~ ~ ( A B ) )A^:5 ~ ( A ~ B ) ( A B ) 2k)AK

    6 ( A ~ B ) ( A ~ B ) k*7 A ( ( A ~ B ) ~ B ) A_4;8 A ( B ~ ( A ~ B ) ) )A^P9 ( A B ) ~ ( A ~ B ) &2_l

    10 ( A B ) ~ ( A ~ B ) N+U

    D,("H("&fu_d_lH1 ( A B ) =\ ~ ( A ~ B )

    8m2_lf_f$u6dD2_l8_4!H0_f$?"+R+

    8m2_l$("3{=7"_f`,k*;Z!3{$Rr1

    ( ~ ( A ~ B ) C ) ( A ( B C ) )/(!2_l";,rf2_l(l2_lf0-rD("8/kR

    $fa&(lt,(/QDau_d=

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    K

    3E5Z&1

    A B B A _4;

    A ( B C ) ( A B ) C "R_YmA ( A A ) h3A B A ( A B ) h3( A B ) [( A C ) ( B C )] s_}( A B ) [( A C ) ( A ( B C ) )] &l

    URT*5'+

    f__,r,+}"_03$.&'(0`fR0R$$f+`a!-"+$80+0L_&_ifissionj

    $=i(l$`l8__+Z\_*Z\DZ\(Z\D/A=jD\/;/D&_"D"/

    &'(fZ"$+8_fD&_\/;D_;,D\/;+]b0

    D"?d+2Q0?dD.&'(D&_+$=i

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    KP

    (!2_lD8_l!3$(H_=?R"D,ru_d2_lD+8_f$(+$!"D3E.&'(H("1

    ( A + B ) =\ ( ~ A B )

    3E5Z&_1A + B B + A _4;A + ( B + C ) ( A + B ) + C "R_Ym( A + A ) A y3AA + ( A + B ) A + B y3A( A B ) [( A + C ) ( B + C )] s_}( A C ) [( B C ) ( ( A + B ) C )] &_|Y5

    [ A ( B + C ) ] [ ( A B ) + C ][ ( D A ) ( B + C ) ] { D [ ( A B ) + C ] }

    `d8_,3_,/0&_3E_k*/0!,0D+8_f+H_

    /D9r/_/Rf+=

    VR/%?@":

    lSb?d(_};L$7"&'("$,/0"$*+`dH_(QRL_+'QRL__1

    1 x A A ( a/x ) |Y5

    2 x ( A B ) ( A x B ) 8_h+"A*xRfr l

    3 x ( A B ) ( A x B ) 8_h+"A*xRfr _6

    A ( a / x )

    x A

    H/l*

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    K

    stm8*,+}?#,/0$Sb?d,+}?#'( `d _Ym}-&0$'1,r3{_f3{?*Sb?d8_DH/l*+`+?d+L/"

    ^"+m(f9rL/"?d(_0K&'("$Rk5=?d03R

    stm^$Sb,_f2Q?d_YmH_1

    x ( A Bx ) ( A x Bx )( A B1 ) ( A B2 ) A (B1 B2 )( A B ) ( A C ) A ( B C )

    istm^"(";stm?d`lD2Q?d_Ym$?d2Q_Ym=jDH_"+,f-$Sb?dH!_f(Rrd

    H_(1

    3 x ( A B ) ( A x B ) 8_h+"A*xRfr l

    "DQR$_f2_lfDR_r1A B =\ ~ A B

    $Sb?dfd8_?d,r++03RD,Z+0=

    ;+$"$,)*+"2_l1x Fx =\ ~ x ~ Fx

    "4rfH_oDH(";,r(stf.&'(3EstH0Z`d

    bH(""v-;;+$1

    1 A ( a/x ) x A l

    2 x ( A B ) ( x A B ) 8_h+"B*xRfr |Y5

    3 ( A x B ) x ( A B ) 8_h+"A*xRfr _6

    stm?d$?d03R,_f?d2Q_YmH_1

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    53/237

    KU

    ( A x Bx ) x ( A Bx )( A ( B1 B2 ) )( ( A B1 ) ( A B2 ) )( A ( B C ) )( ( A B) ( A C ) )

    }4(_,$Sb?d,_f(Rrd,r++03R" ,+?d01

    3 x ( A B ) ( x A B ) 8_h+"B*xRfr

    WRX/%?@":

    }-0$"v&/+bD#$8_D]Y"+gd0$fa=8_D_H0Z",(o0}-0$,+D,dD(

    (b`dD9r+"""v$=$"Db_qfD`d8_,}-0$fD9r9_$=

    }- 0$Zqf}+3&'(+$+3&'(ft&'(_0_D8_"(D,=,R+,+D4(_D+3&'(z53

    0$8_*+`d,D+3&'(2#t(Zf+H_fmf"H0Z!$,r#$8_d#'"o("q|dst8_,Z=

    (_};L$7"&'("$,/0"$*+`dlSb?dH_(QRL_+'QRL__1

    1 p A A ( B/p ) |Y5

    2 p ( A B ) ( A p B ) 8_h+"A*pRfr l

    3 p ( A B ) ( A p B )

    8_h+"A

    *p

    Rfr l

    3 p ( A B ) ( A p B ) 8_h+"A*pRfr _6

    A ( q / p )

    p A

    H/l*

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    54/237

    NV

    $"$Sb?dd+f_"(";=D8(/0A+B`+p+q?dD8_(+!D`+Sb`B!;p$!=;-BfD

    !$!d`+?d+H_"p A A ( q/p )lb&'(H!R$/]Y;,(o"r/=

    ;+$_2_l"$R1

    p A(p) =\ ~ p ~ A(p)

    _f`d_\b+,r-1

    1 A (B/p ) p A l

    2 p ( A B ) ( p A B ) 8_h+"B*pRfr |Y5

    3 p ( A B ) ( p A B ) 8_h+"B*pRfr 3 ( A p B ) p ( A B ) 8_h+"A*pfrR _6

    -_+f_}-0$&'(R0D&'(8_"$8_D?d,

    ;+$D&&_+"2_lD)*f,++&'(3Est1

    A B =\ p{ [A (B p)] p }

    A + B =\ p{ (A p) [ (B p) p ] }

    p A(p) =\ q [p (A(p) q) q ]

    A B =\ p{ [(A p) (B p)] p }

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    N

    Y/5Z97?[:\A?@":

    S0/D]Y"+gd",_f`d,1

    A T A ( t A )

    F A ~ A ( A f ) ,

    ",(oH(DD_(l]Y"f/+$)*(fD3Est

    R!RSb?dD.&'(=i9R&'(3Est|7Z8_DJ+Dst"$Z(=j

    D*@]Y"(__!F!R&l.&'((st_(o0DDR]!"f3EstD.&'(0R=$8_#8_?#

    "FQ58_$+ D_5(st+ 5D3Est-;DR=f0(o0D_H0Z",(oD_f`D/

    $3{?*.&'((st9(D)A1

    ( A F ) ( ( A F ) F )5/5Z97?\A[:ism9R&'(_(RrDst8_$!-y=#$z53D;+8_

    4(_9R&'(ub+cRfD8_(!$st8_q|dH("j=DL$7"&'(L/"]Y"+gd0p ~ p+p ~ pH_"2_l=8_

    2_l_"D.&'(0=H_R?$!_R_D8_(="H__D73*?d+2Q+&_+&0/}-0$,"2_l=0$

    }-D,]Y"+gdS}"2_l=DL$7"&'(KDi&'(3Est+

    9RJ+jD"2_l_fd)*+]Y",1F = \ p p

    ~ A = \ A F

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    56/237

    NC

    i$9R&'()*5/0D2_l+8__r=DD2_l+8_D.&'(+L$7"&'(3EstK++R++L$7"&'(D)*_f_"D

    +z#{&RQ?d+2k)A|Y5(9Rn5D.&'(

    2_l/DR_0"3{`d8_,=_D8_(2_lm_0HRj=

    2_l}D.&'(H__f01

    F = \ p p t = \ p ( p p )

    T = \ p p f = \ s { p { r [ [ p [q (((q p) p) q ) r ] ] r ] s } s }

    m2_lH9fD2_lf,$0"!$;+$+&1

    f = \ s { p { r [ [ p [q (((q p) p) q ) r ] ] r ] s } s }

    f = \ p { r [ [ p [q (((q p) p) q ) r ] ] r ] }

    f = \ p { p [q (((q p) p) q ) ] }

    ~ A = \ A f

    +Z2_l(+,$UUCxVDD,0,+"!RfD+r"$2_l?*,r3EstD.&'((sto=2_l8_Dq

    R+$$(+,$-f=,!D4(_8_"H0D2_l+QR+L_59(,^$+(R`3*?*(+8_"H0

    /-\*+`3*2_lL_5(=+2k)A|Y5(D)A9Rn+'8*8!RCMD

    CM (~AA) A _f`",,1

    p { p [q (((q p) p) q ) ] }

    RD`_f0H0$,1 p { p ~ P }

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    57/237

    N:

    ~ p { p P }~ t

    ,01

    1. p { p [q (((q p) p) q ) ] } y2. p { p [ ((~ p p) p) ~ p ) ] } |Y5

    3. (~ p p) p 9Rn?dCM

    4. ((~ p p) p) { [ ((~ p p) p) ~ p ) ] ~ p} ?dC*

    5. [ ((~ p p) p) ~ p ) ] ~ p A\b+:+K

    6. p [ ((~ p p) p) ~ p ) ] ( p ~ p ) s_}N

    7. p { p [ ((~ p p) p) ~ p ) ] } p ( p ~ p ) $stm

    8. p { p ~ P } A\b+C+P

    9. ~ p { p P }10. ~ t

    11. p { p [q (((q p) p) q ) ] } ~ t

    12. q [ ( t ( t q ) ) q ] k*R+

    13. q [ ( ~ ( t q ) ~ t ) q ] ,SCi9Rnj

    14. q [ ( ( q ~ t ) ~ t ) q ] _l&2:

    15. ~ t ~ t q [ ( ( q ~ t ) ~ t ) q ]A ( ~ t ~ t A ) fKk*L/"

    16. ~ t p { p q [ ( ( q p ) p ) q ] } l#

    17. ~ t p { p q [ ( ( q p ) p ) q ] } +

    q"$QR+(o0_f0

    f p { p [q (((q p) p) q ) ] }~ A ( A f )

    .&'(R

    */9rf+8__f"!$3Est2_l,(, H0(!3{?*.&'(3Estf'(3Est(_?#D.&R+D2lbD9R&'(3EstfJ+/DR_2_l++$D(J+5/0

    (0$.&'()*=,!D8_3{2_l"H0R_f`l9R&'(DF$1k*_f'n`"4rf$9R&'(1

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    58/237

    NK

    K p ( ( q p ) p )

    H_1

    f p { p [q (((q p) p) q ) ] } k*

    f p { p [q (p q ) ] } lK

    f p { p (p q q ) } $|Y5

    f p { q q } AA\b+

    f q q $_f

    f F 2_lF

    )*2_lDd8_1~ A = \ A f

    _fd_r1~ A = \ A F

    9R&'()*2_l8_"HD2k)A|Y5,*D~ ~ A AD

    Dz#{&RQ,*A ~ A+~ A ~ ~ AD/4!0=D.&'(3Est^ma2_lf,*8_D#+&_Q/4!R=

    f(+,$2_lD8_;+$$D)*+]Y"0

    !$8_R9r!Rf8!$"3$($m=$7"(o0D$m8_&/?6(Z_RD$R3,/(0Z!9=8_$$!

    H0,0D?6f("qR!-2_l=$|Y5*DL_D,08_'$"C'$;+$l*DL_+K$!"=D+0

    (}-L_i~ p'$C+~ t'$f:j}-$!8_}_;R$=8_,}-0$"0}-?R9(D/3E0}-/0+RfHD0

    (+3ED-=R_2_l;0$"$l3Q8_(fD

    (3Est !*+}-9(DH!0&'+3E0/0(!D4!)*5(04!=

    2_l#8/0Fp p$gd=2_l8_F/0'"}-0=!*+H_-}-/00}-"D0("}-/0DH0

    }-/0_3E$m"$ub+(+3EfHD0R++R$+!=f

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    NN

    5"80vf+`/!58_D+8_FR+!&'(+8_=8__D*}-/02'"$,+tl*+`/!50/02'f!5

    }-3E0=,0("_f01

    `+,0i_f1j

    1 F p p 2_lF

    2 F ( ~ F F ) |Y5

    3 ( A F ) [ A ( ~ F F ) ] BC

    4 ( A F ) [~ F ( A F ) ] C:

    5 ( A F ) [~ ( A F ) F ] )A^K

    6 ~ ( A F ) [( A F ) F ] CN7 ~ ~ ( A F ) [( A F ) F ] }!$

    8 ( A F ) [( A F ) F ] ,P+,01

    1 F p p 2_lF

    2 F ( T F ) |Y5

    3 T ( F F ) CC

    4 T [( A F ) ( A F ) ] B:5 T [ A (( A F ) F ) ] C*K

    6 T A (( A F ) F ) 2_l

    7 ~ ( T A ) (( A F ) F ) }!$

    8 ( A ~ T ) [( A F ) F ] +2_l

    9 ( A F ) [( A F ) F ] +2_lF

    DR3{`R+/_fR3{R+ftJ++$J+/8_,`lD`8_D9R&'()*2_l(_f"3{`~ A ~ ~ A

    9R&'(k*"$=",(o0'$D_,0DH(P+*+|Y5+}!$9Rn"2k)A+D'$+8/0},0+

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    N

    &}!$+?d}!$9Rn*~i9R&'(2Q}!$j"$=

    !$"+)A#"$Dcb+D_,0H_,0

    qD}-?R9("$"$(}-0D$|Y5+$3E0$$D/08_,`lD,08_Zr'$"";_T~ FH

    D!R(m}-S/00$D&_Q8_f$H/l0=

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    61/237

    NP

    S]1/'31$7%)03R.&'(L!/$++0&'(L!/$(o0L!/$D9;+0

    &'(9R&'(L!/$+^_#"}!$0=.&'(L!/$3",,rm0R""AL!/$$8_f$+r-;L_0=D+8_f

    "0q8_!/$H00.&'(L!/$H9R= D!,9; !/$ H0 f _-,9; D8/ 0D8/ n 0

    lb+lb+D8/0,9;D8/n0lb++0+`n+`0===L!/$^$+H(".&'(cRH0=08_!#(+_-

    903\*++_-+$/+6"_- $!39r$=-$08_,_-D_Sf_0"w(!=9l-0f]!"fst8_D`50+_-

    _-}0DdD_qL_f!$+$,r,3*=

    31$7%]1/'

    "5?74

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    H0q!?dl*"4rfD8(o_qL_D$*A'(0q8_(!3Q`+f_-$_qk`+@"D0

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    TH'$( A B ) T

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    16Hodges, Wilfrid, 2001, Classical Logic II Higher-Order Logic, in Lou Goble (ed.), The BlackwellGuide to Philosophical Logic, Oxford: Blackwell, , p. 34.

    17_(D/Mendelson, Elliott, 1964, Introduction to Mathematical Logic, London, Champan & Hall, forth edition,1997, p. 34.

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    H1

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    MP ( a , b) = {B | ( ( A B) a , A b ) or ( ( A B) b , A a ) }

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    d31

    ( A B) a iff bc ( a = bc , A b , B c)( A B) a iff b ( A b B ab)

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    U

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    UC

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    UN

    H0;0'$f+H0D0'$f+U$$r_r=

    %"H> (A B) (A (A B))

    ,013{3!l"Dg`,3$(P Q) (P (P Q))H("3{

    +gdg`a!$A,rlb+L_"H0,#L_$"8_3{+R]v",r#=

    lb+9o"_q!Z$gDaDb+cHR!R+R!R1Rabc+P+Qc$+]v"lb+_(Rgd0=D,("P Qa$]v"iH__f

    Rabc+Pb#+$gdQc$]v"j="4rfPa#+$gdP Qa8_($]v"P (P Q)g$]v"="$#58_P Qg

    $gdib+0_f"!lP$gdQ$gd}jY#+P Q/P (P Q)04!=

    H0f}!$+00_f$"D3{D.&'(L!/$Rf?5

    7kl0$1

    R(ab)cd R(ba)cd R(ac)bd R(ca)bd R(bc)ad R(cb)ad Ra(bc)d Rb(ac)d Ra(cb)d Rc(ab)d Rb(ca)d Rc(ba)d .

    Rabc R(aa)bc, Rabc Rb(aa)c, Rabc R(bb)ac, Rabc Ra(bb)c,Rabc Ra(ab)c, Rabc R(ba)ac, Rabc Rb(ba)c, Rabc R(ab)bc,Rabc R(ab)ac, Rabc Ra(ba)c, Rabc R(ba)bc, Rabc Rb(ab)c,

    Rabc R(ab)cc, Rabc R(ba)cc, Rabc Rc(ba)c, Rabc Rc(ab)c,Rabc Ra(bc)c, Rabc Rb(ac)c, Rabc R(cb)ac, Rabc R(ca)bc,Rabc R(bc)ac, Rabc R(ac)bc, Rabc Ra(cb)c, Rabc Rb(ca)c,

    R(ab)cd R(ac)(bc)d, R(ab)cd R(ca)(cb)d, R(ab)cd R(cb)(ca)d,R(ab)cd R(ac)(cb)d, R(ab)cd R(ca)(bc)d, R(ab)cd R(cb)(ac)d,

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    U

    V2

    *+,R

    ,*+)A^*(!0A'(H5L_f?R+)A^1

    ( A B ) ( ~ B ~ A ) )A^,*1

    A B iff ~ B ~ A )A^*1

    ,r)A^gdDQR`0gdfD)A^,*($,

    ,r)A^,k*DQR`L_,k*f9(D)A^*()A^ 9( +$ _k* +6 D)A^ * D_ 3 $,

    $k*D_k*=DgdL_)A^"$8/D*8_(D$3R3gd

    H("+6_k*)A^?d-r2lbA'(fR,r"H$RH=

    R= R+ + DN A ~ ~ A+ Cont

    A B iff ~ B ~ A

    &'(f2lb&'(/;fD.0B*+?d8/09(D)AD

    =D?d+8_L/"8_D8/0+"3{,-8*,)*,-)*=)*8_0-2lb,-)*})*(

    .&'(Rgd,r)A^?d"+("*,-)*R=

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    UP

    *+,R

    ?@":2O5EfCgKhi

    _l2Q2_l?d2_lA

    B =\ ~ ( A ~ B )

    A B =\ ~ ( ~ A ~ B )

    QRb`d_;

    limj(A (B C)) (B (A C))(A B) ((C A) (C B))

    CB

    )*b`d

    2k)Al2k)A|Y5

    )A^-f$l

    A ~ ~ A~ ~ A A(A B) (~ B ~ A)A ~ ( A ~ A )

    DNIDNEContCI

    ;+(o|#+q1

    q?d+2Qfn|#+q?d+2Q(_`+$.&'(0=DD|#+?d+2QD.&'(&+&_0/+(]b

    D\/;++,D(0=D+8_f+2_l?*|#+qD,re_(l?d+2Q(_+

    }-?d+2Qb`dH__H(""v-;=L|#+b`d(_$|#+Sb?d+"(l8__Ym

    /QR/0?d3{D/(("3{QRd_k*/0_9((

    A A$2k)A8*f!$(f=?d3{+0S+Wl?d(fD-f$CI$D=

    ?d(_9oCI-_-A4! Z)ARgd/0=}-"?dD8_($-f$+)*(!ZRZ)A}!CI}-_-"

    $9_d8_+$-f$(l_-f$$gd=9o!f(_H4(m&(l,|#+}$_1}--A)A

    -}B,8_04!"0A+B+_bL_0+-f$H03

    Q_L_0k5"Q$,r\/4#l("=}--D+8_fA}-)AB$k+-f$(l8_04!=D^m2_lA B

    ~ ( A ~ B )-f$(lA+B$_L_3=(lD&D8_($-f$=

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    U

    $"D|#+}&_(l,+r$(_HR2k)A,*H("`/,r2_l1

    A B =\ ~ ( ~ A ~ B )=\ ~ ~ ( ~ A ~ ~ B )

    = ~ A B

    D+8_f&(lm,1,/0'QR-+}#QRH_*&'(

    DH_H9z63;,QRf7}&"-4!DH_*&'(Z\`@,/0|#+($H_*&'(=

    2?@":fj,9%gkVist?3*0QRb`dD"L?d+2QDH_="4rf

    `D|#+-f$l?d0S+W4!9rf+0DR4!f_)*`df?d8_$"S+W;*`d+H("8_}_

    ,(9(`dkAH(""v.&'((st1

    Sb?d$2k)Al2k)A|Y5

    )A^

    A ~ ~ A~ ~ A A

    (A B) (~ B ~ A)

    DNIDNE

    Cont

    D8(/0H("!$_f?dLfD?d$;H1

    Sb?dL_8?d(~ A ~ ~ ~ B) (B A)Bacon

    ?dLDL$7"&'()A^|Y5Cont_D( ~ A ~ B) (B A)D

    _"L$7"&'((st".&'(D3E^"+m,A?#DL8_?d/4!2k)A,*W+f_DH_oD8_(08_D_f0

    H(",3;A1

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    UU

    =BaconD(~ A ~ ~ ~ B) (B A)DD_9(D8?dD.&'(04!`d_$=

    C=Bacon2D( ~ ~ ~ A ~ B) (B A)D?d+D_9(D8&'(

    D.04!`d_$=:=Cont_D(~ A ~ B) (B A)D)A^|Y5DDNID2k)AlD

    A ~ ~ A=K=Cont_D(~ A ~ B) (B A)D)A^|Y5DDNED2k)A|Y5D

    ~ ~ A A=N=ContLD(~ A B) (~ B A)D)A^oDDNID2k)AlD

    A ~ ~ A=

    =ContRD(A ~ B) (B ~ A)D)A^$DDNED)A|Y52kD~ ~A A=

    P=Cont+D(A B) (~ B ~ A))A^lDDDNIDDNED+l|Y52k)ADA ~ ~ A+~ ~ A A=

    Y51

    )AS"2_l]Y"+gdS,1

    A = \ A F~ A = \ A f

    _fb`d_Dd8_F+fHR+}q1F A( ( A f ) f ) A

    "4rfF A

    D$* A

    `lF A

    $=^m A

    (l]v"7" ,A#5$~ A(lv"],A$=)AS+8__k*fZ"_A_fH_1

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    VV

    2k)AlA AA ~ ~ ADNI2k)A|Y5 A A~ ~ A ADNE

    )A^(A B) ( B A)(A B) (~ B ~ A)Cont

    3E^"+m A ( A B ) A ( A B )Kz#{&RQA AA ~ Az#{&RQ2lb A A~ A ~ ~ A

    `Z_f.Z$9r,3k*(0,D0=

    =9RQR9R)*"__k*/0)*'QR=9Rn?dD8_+7 A A3{?*.&'(8_

    )*8_D+8_f$,/)*9R=C=D2k)A|Y53!?# A A$8_D8_.&'(D

    RH0ZD,r3!d"1A A_$gd_}-0(l_7"]v"=}-"4rf(D(!]v"7""H_v"0$m+,_D

    `A A(!03!l2k)A|Y5+=:=?dD`58_ A Asmk*fD2_l(_f$3{?*!-

    ( A F ) ( ( A F ) F )$_r=

    *+,CR

    ++_UP:!Z$A'(D!/$q57$D"z6+0$!t=&'(8_9rCRiClassical Relevant Logicj=CRst,/0

    3ER+_k*)A^*+2k)A/0$EFQ=

    CR = R+

    + DN A ~ ~ A+ RCont A B iff ~ B ~ A

    + EFQ A ~ A B

    CR = R + EFQ A ~ A B

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    V

    3{$rD)A^*D,-8*"(";R=#8_H0 3{fd(0_ CR"+=d 8_(0_f

    H_+r1

    d++_(UP:xNP1

    CR = R+ + DNE ~ ~ A A 2k)A|Y5+ Antilogism A B ~ C iff A C ~ B *b

    H03{d+8_f*b$"D(d*+D`+(

    +2k)Al+)A^EFQdH("3{+(1

    *b,0d`+(1

    A B ~ C

    ~ ~ C ~ ( A B )

    C ~ ~ C

    C ~ ( A B )

    C ( ~ A ~ B )

    A C A ( ~ A ~ B )

    A C ( A ~ A ) ~ B A C ~ B ~ B

    A C ~ B

    ,0EFQd+(1 ~ A ~ B ~ A

    ~ A A ~ ~ B

    ~ A A B

    d2k)Al*,0+(1 A ~ A ~ A

    A A ~ ~ A

    A ~ ~ A

    d)A^*,0+(1

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    VC

    A B

    A ~ ~ B

    T A ~ ~ B

    T ~ B ~ A

    ~ B ~ A

    d#$8_(1CR = R+ + EQT A B ~ B

    + EFQ A ~ A B

    H03{d8_fd("Dd(+2kA,*$H("3{)A^*1

    DN A ~ ~ ARCont A B iff ~ B ~ A

    ,01

    1. ~ ~ A ~ ~ A2. ~ ~ A ~ A A EQT3. ~ ~ A ~ ~ A ( ~ A A ) +C4. ~ ~ A ( ~ ~ A ~ A ) A 2lbstm:5. ~ ~ A A A EFQK6. ~ ~ A A N

    1. A A2. A ~ A ~ ~ A EQT3. A A ( ~ A ~ ~ A ) +C4. A ( A ~ A ) ~ ~ A 2lbstm:5. A ~ ~ A ~ ~ A EFQK6. A ~ ~ A N

    A B iff ~ B ~ A

    1. A B |2. ~ B ~ B

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    V:

    3. A ~ B B ~ B +C4. A ~ B ~ A EFQ:5. ~ A ~ A6. ~ A ( A ~ B ) ~ A K+N7. ~ B ~ B8. ~ B A ~ A EQT9. ~ B ~ B ( A ~ A ) P+10. ~ B ( ~ B A ) ~ A 2lbstmU11. ~ B ~ A ( A ~ B ) _4;V12. ~ B ~ A QRl+

    d_+,+3;(118CR = R+ + A ( B C ~ C )

    + ~ ( A B ) ~ A B+ EFQ A ~ A B

    d8_q4D($(!0_f`+?dA++?d_f=

    *+,CR*

    "!R!&'(CRD,r"$8_;+!R)AS+DHHR1)*b`d_CRb`d_+R=+_H58_

    +UPK+"c'D8#+&*&'(Dc7'df$CR)AS+CR*=-)*R(Rr/)*+CR/rH0,

    RH0Z1CR* =\ R

    ~ + CR

    CR* =\R+ + DN A ~ ~ A

    + Cont (A B) (~ B ~ A)

    + DN A A

    18 S. Giambrone and R. K. Meyer, 1989 Completeness and conservative extension results for someBoolean relevant logics, Studia Logica, vol. XLVIII

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    VK

    + RCont A B iff B A

    + EFQ A A B

    /Db`d8_$,-)*+/#)*(= "4rf/+8_D*++$*#+)A^?d*,-)*+2lb#)*!-}i =`!$CVVVxP+8_

    D",-)*+,-)*=j/3$_)AS+8_fL_0k5"$8_"8_!RR

    _s_}__k*"=&'(,-)*`d,+}D_3CR0#fCR"CR/k*?_33k*)*`d,+}+("#&'(

    R

    #0fR

    "R

    /k*?_33k*("="Dc7'dR

    +CR

    w!53"$L_0W!-D_3R+CRCR*w!5R!-$=,(o,-)*+#)*,;?#!8__D_H0Z0l"

    =H("}_/!H0f L$7"(o$$(4(_=L$7"QR"H

    DH_)AS+"4rf#Z+A)A,@"f$3HR!RL$7"QRS+_8_(=/0Dd8/0)*"_0

    2_lHA,-+#H*+RR1 L$7"0#,-

    QR A B=\A B~ A B=\A BQR+( A B ) ( B A )=\A = B( A B ) ( B A )=\A B

    2' ( A B )=\A B~ ( A ~ B )=\A B?@ A B=\A B~ A B=\A Bgdp p=\p ( p p )=\Tp ( p p )=\W

    ]Y"p p=\p ( p p )=\Fp ( p ~ p )=\I

    HA8/0(/*$*}'01

    '0#,-

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    VN

    QR A + BA B~ A + BA BQR+( A B ) ( B A )=\A B( A B ) ( B A )=\A B

    2' ( A B )=\A B~ ( A ~ B )=\A B

    ?@ A B

    =

    \A + B

    ~ A B

    =

    \A + B

    gdp ( p p )=\Wp ( p p )=\t]Y"p ( p p )=\Ip ( p ~ p )=\f

    RW+"D+8_f+$_.&'(#'H*

    8_58!_0DL_f+$L_Sb0+m*=

    3bCR=#L$7"QR+d*1

    CR A B C

    CR A ( B C )

    ,011. CR A B C

    2. CR B A C ;

    3. CR B A C ,C

    4. CR B C A *b:

    5. CR A ( B C ) ,SK

    6. CR A ( B C ) ,N

    7. CR A ( B C ) 2_l

    C=#)*|Y5+l*1

    CR ( A B ) C

    CR ( A B ) C

    CR A ( B C ) CR A ( B C )

    ,01?3**L/"=

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    V

    :=#)*|Y5*Af1

    CR A B

    CR T ( A B )

    ,01?3**L/"k*8_+1CR A ( T A )=

    QRfz6/bQR/",_f5R"H0Z3{1

    K=H0#QR+/bQRi_k*1jCR A B

    CR A B

    ZH5,CR*+r$/94!D,rfDH/l1

    ZH51CR A B CR A BZH5H/l1CR* A B CR* A B

    4!1-A+B#0/*+

    r(R

    CRA B

    RA B

    N=H0#QR+/bQRi`0j1

    CR ( A B ) ( A B )

    CR ( A B ) ( A B )

    =-A#QR+#)**rR

    CR* A

    CR* ~ A

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    VP

    P=-ArR#QR+#)**

    CR* ~ A

    CR* A=-ArR#QR+#)**

    CR* ~ A

    CR* A

    U=,-+#)*,L$7"}!$1

    CR* A ~ A

    CR* ~ A A

    *+,KR

    -EFQ*b_i/,/0R)*jZRid+RjH_}*qKRH$1

    KR = R + EFQ A ~ A B

    KR)A^?d,+}CR}+r$,1

    KR = CR + Cont (A B) (~ B ~ A)

    &'()*D)A^s_}8/0$KR*#)*=

    ,$$KR3"q"$8_R+CR`l)*/+DH("_A#)*5,-)*D_3+H_L_1

    KR = R~ + CR + A ~ A

    q8_!RY-s_/_f/0H_1

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    V

    R

    _k*)A^

    2k)A

    ^)A

    EFQ

    Sb?d

    KR+ R

    EFQ

    ^)A

    KR K

    CR

    qD$ofD/8_+r*2lb0H_=q!;0

    !R?d+H_*_02lbq_"_0*qR+} $,h'Z("(0H_=sm"H!-DHCRf3"CRH("}_/!,-)**+#+CR*

    H(=_fda/Dd8__r1

    R+ ~

    R

    ,S,g )A^ #)A

    ~ A ARl

    ,S,g EFQ

    )A,-

    CR* KR

    R+

    CR

    KRL$7"&'(f

    K2lb$=,+}"$(l,8_

    EFQ

    R/0 ^"+m0/4!L$7"&'(0=^"+m$/;8_f0K+K=

    `8_D_A02Q|Y5?d/0+rH_1

    K = A ( B A ) K = A ( ~ A B )= A B A = A ~ A B

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    VU

    E = A B A EFQ = A ~ A B

    ,+}(_?#EFQR^"+m0K+K/4!*"$8_0

    +dR$3!lfD+8_f+EFQK/$,="!R!KR|7Z"$8_;+CRD,rkA`d,+}

    &'(Rw!5=,+}"$(l,8_EFQR3$9(Z"R``Z!5R?_3k*3k*73*")A0*0

    Rk*3k*Dsmf")A/=`D/0_q_f1

    KR1. [ ( ( A B ) C ) ( A ( A C )) ] C 2Q?R9(KR2. [ ( A ( A B ) ) C ] B ?d+2Q?RKR3. ( A B ) ( A A ) ?d+&?RKR4. A ( B C ) A B B 2Q+&?RKR5. A ( B C ) ( C ( A B ) ) B 2Q+&?R

    `8_0)A/-0*+R_CRD!k*(KRk*=

    `8_3{0KR

    !D_`0_fR

    3{R1R1. [ (( A (A ~ A) ) C ) ( A ( A C )) ] CR2. [ ( A ( A B ) ) { ( ( A ( A B ) ) ) ~ ( A ( A B ) ) } ] BR3. ( A ( A ~ A ) ) ( A A )R4. A ( B [ ( A B ) ~ ( A B ) ] ) ( A B B ) ( A ~ A )R5. A ( B { C [ ( A B ) ~ ( A B ) ] ) ( [ C ( A B) ] B ) ( A ~ A )

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    V

    r+EFQ`0R!-$=

    9;,!-"$8_w!5nW!-8_!Rk5EFQ

    !"_i$(=r=D^_#_mY-9;&'(_;/0+(+8}f_"_&'(8_$dl.,j`d("\*'n(

    `0KR1KR5D)*0"D9;o",?#8/0&'("$#)*".&'(f,r2lbd9(_YmCR

    `3*&'(+(("KR*7/,(0=

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    W61$7%2+}RD3E.&'()*,$R3$!/$0=-

    sm/?+H_q,rL$7"gd._RD)*_r1(__EFQ(l_

    A ~ A B

    3!l(l_)A^,*(__+R

    ( A B ) ( ~ B ~ A )

    3!l-=?5R_?++H0)AL$7"gd._RH0t-$$_H(";+(l(_,r+_r)*+)AH_0

    ?_a+D!_,#t+,AD0+8_f""0`3*_$R=(!0_Z+d?_a8_fZ=8_dz53!

    0+9rz53^$+H("H_fm=

    61%MA[:m5Efi

    )*L$7"gdhRb+L_`L_)A"$8_$gdlR]v"Dlb+,r`,r1

    V ( ~ A , a ) = 1 V ( A , a ) = 0 V ( A , a ) 1

    ",(o]Y"(l)AD)*L$7"gdhRDH(gd+-=

    D3E.&'(L!/$DgdhR8_,+}$R4!9!(R1j=,9;L!/$,R+6D8/0Cj=3!EFQ+EQT+:j=)A^3!=

    1@2CR

    .&'(8*+*L!/$8_D$!R/&3'__&'(+("R/+u6dDL!/$8_3"Z$=++_UP:D!Z$&'(8_

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    C

    ,rCRiClassical Relevant Logicj9=CR3Est,/0R)A/0$+_k*)A^*+2kEFQ=

    !R$8_,0D_fH_+r1

    =,9; L!/$ ,R +68/ 01L!/$ 8_ DA ~ A/0 lb++gdD0A ~ Alb+/0-_f$]v"D0A ~ A

    R]v"lb+L_A+~ A(l_8_+(0Z]v"Dlb+,rA$8/n8_+]v"H0$]v"H0=-D8(/0A ~ AL_

    Rgdlb+A+~ A,r(l_8_+(0ZgdDlb+AH0$8/n8_+gdH0$gd="4rf`5A ~ A0

    2_l(D$gdlb+lb+_DA_$gd,r~A(+4!D,9;2_l$,9;L_lb+0DL!/$8_"H_-=

    (/0"4rfD8A+~A2_l ( D(! gd H0 !lb+0 8/4!D$8/,9;L_Dlb+0L!/$8_"H_-=

    C=3!EFQCR1`A ~ A B" lb+ 0 _f $ 3!lA ~ ARgdB,o$gdA ~ A!lb+0gd=

    !";+$L$7",fD.&'(L!/$,f"(";SbRgd=

    :=3!EQTCR1`B A ~ A"lb+0_f$3!lB $ gdA ~ A/0 DH!- " ,(o DZ ` _f $ gd

    lb+_0gdL!/$8=K=)A^3!CR13!( A B ) ( ~ B ~ A )

    $""d8_H(""v,r)A`EL_A'(,9;+70

    lb+$Da

    Db

    +c

    "H_qRabc

    `+0A

    +B

    lb+0a+b+]v"Dlb+c(RgdD=Dd8_A Ba $ gd~ B ~ AaD4! + $ ]v"(

    A B ) ( ~ B ~ A )a$3!lD8_(+]v"=

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    :

    )A L!/$ 8_ )A ^ ,* (_ Hn /0 )A ^ DR`$3!l3!l00D_3lb+"QR0^Rgd

    lb+},r)A0$gd=$_f*,01

    N=`)A^3!3!l01`-A BA'(lb+0

    "lb+0rRgdARgdB$gd}=*("lb+0D$*.&'(L!/$")A^L$7"B

    R]v"A$]v"}="lb+0^m~ BRgd~ Agd}$=`D8_(~ B ~ AA'(lb+0$gd=

    22KR

    $8_)A^?d3!L_\b,_4;+,A"'0RH0H/l}Zr\b1

    Rxyz Rxzy ,A:

    )A ^ 3! Dd 8_ KRH$13! , , ( A B ) ( ~ B ~ A )- " H0 , $ "A BxR gd

    ~ B ~ A

    x

    0ZgdHR!R-_fRxyz

    ,A(:H_1Rxzy

    +,oA Bx-^m$gdAzRgdBy-(l_0ZgdBy

    R]v"Az-(l_8_+0Z]v"~ ByRgd~ Azgd0Z8_(+D~ B ~ Ax0ZgdR=D4!( A B ) ( ~ B ~ A )g

    gd$3!lD8_(+=(o0DR8_,+0__$D_-$m)A^3!_

    $mY-=,AhRD+7:R(l;-0*9( De_!D$!Z(

    &'(3Est'(!_Ym"iw!5nW!-(l_j+,_m ?@NH_"R,r=hR$ ]'e_!,r f_!/$;D,(",A:,H("1

    [ ( ( A B ) C ) ( A ( A C )) ] C

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    K

    "("yx`D0( A B ) C+A ( A C )_(!0gd

    "H0,Cx$gd1-A BxRgdRxxx`+`gd/0

    xgdRrDCx$0=-A BxL_oR3gdy+z0"Rxyz+Aygdi+Bz]v"j$=+`gd+8_fxD4!"H_-A Cz$gd=,A(0:H_Rzyx,oA Cz+AyD$gd4!"RCx$gd=,_m=

    61%MA[:m5Efi

    2*+,R

    &'(,rfD.0";EFQ+$]v"/4!0)*(f,_D$l*"-q_0,rD0+)*(}-0#+R!R;R3gd=

    l*8_}-Z03+]v"H0(*dH00H0(*d,RZH0D_,kA=l*8_+(!08/n_f;Z;+0,r,y00

    "A8/=>OH0&'(D8(o/.0A0f,}-/0(+b0A~A+

    AA-4!=*_D_3l"-q_0iL_gdHn,rAD0j}-fZ8_?d_8kAS?d(+b0/0

    ,rR3gd0=l*8(o}-Z_D_0_+]v"(Rgd0(Rgd,RZD_3,kA=TXl*8_stD\*+D0f*_0

    19&'(fZl*8(onf8!$",9(m(/n0/4"f_0

    `l*8_;)*(!00-q,=l*Dq$$+8/n0

    ,9;,9;9;+&'("-+(!0+l+0_fl*+n8/0+$8/0",9;+R.&'(+_0l*(""}8/n0=9""

    ,9;8/0/}_Ym(/4`f"0-f$0((",r8_}_;=20l*8_`E8_!90l*,+!$0=,!$8_D0f

    /,};+R}-,,!$,rQ0]v"gd0=8_,l*}0/4`f_00(!?""-q=

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    N

    ,9;,9;+(!00}0l*,0Dl*0"(l8_?"0$gd,r)A_}-=

    d9olb+_l*L_D8_(i1j8/,9;iCj8/n,9;i:j

    };+,9;f(/iKj,9;L_f(/n};i8/n=j8_$fa!+"YD;1

    8_`+(o0"}-'H0Zl*0A'(n0il*(l_0?"n_8/nj/;+0H("$_S/!;H0Z!-8kAS

    H_RpZ,A'(+7Af5f+H_=*7A'(n"H_(A'(R+A'(n,fL_D_3+H("l#'i)*(!,!$L_(j

    H("W("A'(f=R*_D?#8/0k*(0,Z,f"H

    0=8_+&'(".,DL$7"`+3&'(,f,/0};}oA'(,f8_

    !,(o+$\_R7".&'(L!/$}!$f!$_H0Z"=8_$l*,,"0l*+8/n!/$W+*0

    8_,+!/$,f"DR)*(o,f_"$Rl!0",r+!$W+0i*j$=W++Rf9o&'(f!$f(3D_0

    lb+-f$9f!$0=

    *L9$%

    '+!$lb+,$,_0!/0+0=lb+L_.A+L_lb+0$\L_+!$D?#8/0+!/0=-aRlb+L_a*$,r!/0=

    _H0Z",(oa!/0}a*$i(l_a=a**=js!/09H0Z8t$H(";,r/,("-=

    !$_f*f`L_)AWf8lD9;+L$7"&'(H("1

    `L_)A8/,9;L_-9(+-$gd`,rZ,9;,rgdR3iR]v"(l_=j

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    .&'(8_};$*,*8/0}+f_;"8/,9;*_,r!/01

    `L_)Alb+L_-9(+-$gd`,rZlb+,r!/0R3gdiR]v"(l_=j

    ,rfgdhR$_$+\L_!/0";}_fdgR,1

    `L_)Alb+L_!/0-9(+-$gd

    `,rZlb+,rR3gdiR]v"(l_=j

    8_/,f#'8_iL$7"`+3&'(j8(o",,1

    V ( ~ A , a ) = 1 V ( A , a* ) = 0V ( ~ A , a* ) = 1 V ( A , a ) = 0

    ,(o0".&'(L!/$DRDf_+aH0|Q+"Yf

    gdhRL$7")*D!$L_H_}=gdhR

    $m.&'(1

    V(AB,a)=1 V(A,a*)=1 V(B,a)=1 (l_ V(A,a*)=0 V(B,a)=1

    )A^+2k)A(__fhR+H__}-R3!l)*H_}+!$1

    a = a**Rabc Rac*b*

    "H6>~ (A ~ B) A B

    ,011 V ( ~ ( A~ B ) , a ) = 1 y2 V ( ( A~ B ) , a* ) = 0 V~

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    P

    3 ~ V ( ( A~ B ) , a* ) = 14 ~ xy{Ra*xy [V ( A , x ) = 1 V ( ~ B , y ) = 1]} V5 xy{Ra*xy [V ( A , x ) = 1 V ( ~ B , y ) = 0]} 0$&'(6 xy{Ra*xy [V ( A , x ) = 1 V ( B , y* ) = 1]} V~

    7 xy{Rxa*y [V ( A , x ) = 1 V ( B , y* ) = 1]} _4;hR8 xy{Rxy*a [V ( A , x ) = 1 V ( B , y* ) = 1]} )A^hR9 xz{Rxza [V ( A , x ) = 1 V ( B , z ) = 1]} !$,\10 xy{Rxya [V ( A , x ) = 1 V ( B , y ) = 1]} !11 V ( AB , a ) = 1 V

    ,rf$R3{}"Y!R^$_$+g,0?5/0";=

    N%N%

    #dDH__",(oD+!$.&'()*`dD6dD!/$("(="/9_D;+8_+!$L!/$8_$+

    /9?*(l!$8_"$=!*+H_-,9;L_!/0RL_9(D"@b_/'Z80vRh)*+)A"90+H_("=

    8_Dd!6(m""$_UPU!(8+UPU!Z$+L!/$8_=y!8_3#n"t$m$8_R1-xf!lb++Sb+flb+

    lb+R0x*}8_}-fL_0"$!lb+lb+gd0x,r/R/9wskA(l_R=+RD,r!$HnD$m8_H9

    ,"5RD$!$cR+83L_(fUU:,rD_f+_$,rRH("=

    `$,?_"t$mUU:y!8_((0!$09f$!/$ + -f$-]"UPK " =,lb+ L_ !/0

    },r-f$lb+8_2_l("=t_+$m8_cQD_f,rfH_fm=

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    lb+,-f$+-f$"$/08_Rrf_0"@,1lb+W,lb++0$lb++"#5-f$,W+

    8fZ-f$i=D|dA'(qfL_;+lb++,-f$,

    $gd_D,r)A+lb++f_D,rZ"}-j="&'(L!/$-9/0f!,9;8/0!$+("

    (l9rs_fr0m+e_!!"0-=0m+e_!8_fZ

    -f$Z+-f$=/De_!8_,-f$,,D-""perp+orthogonality=il(l+

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    U

    (l+!$D-f$9f!$D,t1lb+a_q=lb+,"_0a}D-f$b+8_,r+la*+!/0a(=f

    lb+,-f$"4r$9_+Rr7"90(3,(

    R!-q+!$="}o9(D2_l8_D+!$"$8_-_++5,/00$!R?3*st"R!R=D8_?_,

    hR_0Cq"-_fH_+r1=$,A!-f$C=lb+Dlb+00_;+-f$,r":=lb+/4}";+!lb+Dlb+L_-f$08_$

    K=(!lb+-a(lb++4!b+cR-f$afL_0b+c4!$-f$_"=

    1. x y ( Cxy iff Cyx )2. x y Cxy3. x y [ Cxy z ( Cyz z x ]4. Rxy(Cz) Rxz(Cy) [ (l_ w ( Rxyw Cwz) v ( Rxzv Cvy) ]

    7%EN_n61$DH!-",(o;+)ASfz6!/$R+1_#!$R`+

    ,?_+(?__R++++_=

    2_lS)ARf9oL!/$Ri__R1j#)A1A$gdA3gd+RA$]v"AR3]v"=C,-)A1~A$gdA+R]v"A$]v"ARgd=

    }-ZDL!/$8_lb+08/n0]v"H0+gdH0(

    lb++(Rv"+gdD*0]=f9oD4!H_W1

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    CV

    =gdTi~gd.A~{t}jC=]v"Fi~]v".A~{f}j:=+0Bi~]v"+gd~{t,f}j

    K=0Ni~]v"gd~=j

    Wf8_+r-_f`+;,_l/00H_1

    True T {t} gdBoth B {t,f} +0Neither N {} 0

    False F {f} ]v"

    (" ;nDRf9oL!/$"gd"n+]v]v"gd=F+NngdF+BD8(/0(v"T+N]v"nT+B(*d=)*SD,("

    _fd,,1

    A ~A A _3_+ A ~A A

    T F F {t} {f} {f}B B N {t,f} {t,f} {}N N B {} { } {t,f}F T T {f} {t} {t}

    _mUUV_m$",-+#)*L!/$8/0CVV

    WfD,r$"$"#)A_Rf9oL!/$0)A0L$7"Wf+f_d`T+F$=/D0/,.Z_m

    #)A_;lZ$/f#+("%!$H("1

    2_l)ASRf9oL!/$Ri_mR1j#)A1A$gdAR3gd+A$]v"ARgd=C,-)A1~A$gdAR]v"+~A$]v"ARgd=

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    C

    A A ~A _3_+ A A ~AT F F {t} {f} {f}B F B {t,f} {f} {t,f}N T N {} {t} { }F T T {f} {t} {t}

    q$(/0D,r$""2_l}$W+#)A,

    Wf9(`0#)AD_m2_l/L$7"0Nf2_l8_"#)AH_-1

    2_l)ASRf9oL!/$Ri$R1j #)A1NAgd$AR]v"+NA$]v"AR3]v"=C,-)A1~A$gdAR]v"+~A$]v"ARgd=

    _f`+;)AS"_A,1

    )A # )A S )A # )A S

    ,- (,+ S_m S$

    ,- (,+ S_m S$

    A ~A A A NA A ~A A A NAT F F F F {t} {f} {f} {f} {f}B B N F T {t,f} {t,f} {} {f} {t}N N B T F {} { } {t,f} {t} {f}F T T T T {f} {t} {t} {t} {t}

    9oL!/$"HnstRfD.&'(f_0W7&'(0&3',

    $".&'(?",r=+,-)AfS(+,$D`58_!;$L!/$8/0fD#)A=_"!!L!/$8_!*+Dq

    '(fz6Z?6Dz53,rf!$-0DYs_/.&$`R+_=

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    CC

    kO5EYR

    O5EY)*S8_(o+]Y"+gdS8_(oDQRS8_(oD.&'(H0f,

    ;+9r,";,L$7"&'(""}_/!R=D#)*,}_/+DD,-)*!-73*DH_=D*@]Y"+gd,}_/D8(/0T+F+gd+D

    D_(l]Y"t+f-*R}D=QR,D,(""0}_/8_(o}0"vd7ZQH("1

    R,}_/8#+QL$7"QR+'QR}_/D0$1D3#nD'QR

    $2_l$A)A+#@"DAA5DL$7"QR$L$7"QRH*+,D_}_/1H*+D.&'(D)A"4rf1

    L$7"QR8_(D#+,-HA#+,-H*+R12#j"]+A,-)A+#@jA#)A+#@"=

    517@O5E

    /bQR+'QR,D$}_/iEnthymematic implicationj$1QR

    4!#_9(AD'0gd}-L_D/bQRD,9(m+/k$=4!#D'QD/bQRA/0gd}-8_0=3D_QR-ArB$/bQRp { P [ ( A p ) B ] }=

    $(D.ZH0H*9o8_(_+H("*/L_0"$H_8t$9r^$1

    1/12_l1

    'QR2_l,+,-L$7"QRA B =\ ~ A B

    #L$7"QRA B =\ A B/bQRA B =\ p { P [ ( A p ) B ] }

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    C:

    2_l!3#f/bQRa?9_UN:+(+,$U_+$UPV$`l2_l},r"H_+r1

    /bQRA B =\ ( A t ) B

    _k*2_l+8_,`l3{R$,$rD1

    A BA B

    p { p [ ( A p ) B ] }( A t ) B

    A Atp { ( A A ) p [ ( A p ) B ] }t [ ( A t ) B ]

    p { ( A A ) ( t p ) [ ( A p ) B ] }p { p [ ( A p ) B ] }

    p { ( A t A p ) [ ( A p ) B ] }A B

    p { ( A t ) B ] }( A t ) B

    A B

    _k*E*_2_lD_f`_f$(+,$2_lfEk*

    1P ( t p )

    _D;+8_UPV,!5D2_l+8_"0D/ + ,$(U"}!$_k*",DS4+$DA*D

    9r/bQR_k*E_UPV3{Z/bQRH58/0("=&'(stCRD,("+H_+H0/bQR+#QR5"H_"+D

    58_/R,/0Y-1K=H0#QR+/bQRi_k*1j

    CR A B

    CR A B

    ,01CR A B

    CR A t B

    CR t A B

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    CK

    CR t ( A B )

    CR A B

    ZH5,CR*+r$/94!D,rfDH/l1

    ZH51CR A B CR A BZH5H/l1CR* A B CR* A B

    4!1-A+B#0/*+r(RCR A B R A B

    N=H0#QR+/bQR1

    CR ( A B ) ( A B )

    CR ( A B ) ( A B )

    2Z,01k*D`+`-CRrR

    CR ( A B ) ( A B ) y CR ( A B ) ( A B ) #}!$CR A ( A B )

    CR A ( A B )

    CR A ( A t B ) CR ( A t ) ( A B ) CR A ( A B )

    CR A ( A B )

    CR A ( A B )

    CR A ( A B ) 8;/

    CR A ( A B )

    `8_M3&'(+RM3+$k*R_RM/3{R=yD8_(

    $]v"=)A#L_D+`H_+r1

    Rgxx, x g, V( A , g ) = V( B , x ) = 0 , V( A , x ) = 1

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    CN

    8_D#A tg+xD8_(D$]v"A t Bx$gd=_$fA Bx$]v"=_f`D4!

    ( A B ) ( A B )g$]v"=

    =-A+#)**rR#QR

    CR* A

    CR* ~ A

    ,01 CR* A yCR* A f

    CR* A f

    CR* A f

    CR* A t f CR* ~ ( A t )

    CR* ~ A ~ t

    CR* t CR* ~ A -*

    `,#@*D.&'($$0`E+$D_k*,

    )A=_k*,#@*-*,*8_)A`E,A+_k*-*W_Ym(=

    P=-ArR#QR+#)**

    CR* ~ A

    CR* A

    ,01D?3**L/"

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    C

    =-ArR#QR+#)**

    CR* ~ A

    CR* A

    ,01 CR* ~ A yCR* A f

    CR* A f

    CR* A f

    CR* A f

    CR* A f

    CR* ~ f

    CR* A -*

    U=,-+#)*,L$7"}!$1

    CR* A ~ A

    CR* ~ A A

    ,01$$=

    517@O5E57oO5E

    RQR,+}D0D+DD+0""2_l}_QRS+,9r+(!0/bQR/kQR+/b+QR0/D+

    ",_H_1

    /bQRA B =\ ( A t ) B/kQRA B =\ A ( B f )

    /b+QRA B =\ ( A t ) ( B f )

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    CP

    _D8#+D/b+QRUPVxC$"l=D/kQRl#$8_DtR=

    O5E3b517@/QR8_9rfZ_f"50H_fm1

    =QR8_/02lb0"(l8_D(!0'QRf

    R ( A B ) ( A B )R ( A B ) ( A B )

    R ( A B ) ( A B )R ( A B ) ( A B )

    R ( A B ) ( A B )R ( A B ) ( A B )

    C=2lbD/b+QRDd8/0+QR_$f$01

    R ( A B ) ( A B )R ( A B ) ( A B )

    R ( A B ) ( A B )R ( A B ) ( A B )

    R ( A B ) ( A B )R ( A B ) ( A B )

    R ( A B ) ( A B )R ( A B ) ( A B )

    ZH5,0i$8m5,0fR!3"jk*8_D!DR;

    ("1

    R ( A B ) ( A C B D )

    ZH5,0D,("+1

    R ~ A ( A f )1

    R_k*R ( A f ) ( A t B f )2

    f+CR ~ A ( A t B f )3

    R ~ A ( A B )4

    R B ( t B )5

    R_k*R ( t B ) ( A t B f )6

    fN+R B ( A t B f )7

    R B ( A B )8

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    C

    fK+R (~ A B ) ( A B )9

    R ( A B ) ( A B )10

    d"H0,$"D,-QR/b+QRf}!$3{

    ?Q7"4!D}!$8_!$f FH$12Z,0yR ( A B ) ( A B )1

    R t ( f f )2

    R f ( t f )3R_k*R ( t f ) ( ~ A t A f )4

    R ( t f ) ( ~ A

    A )5

    f:+NR f ( ~ A A )6f+R f ( ~ A A )7R f ( ~ ~ A A )8R f A9

    8;/UR f F10,0,_m=

    :=k*+/b0*/k+k*f0i,-j"(l8_D(!0

    If R A B then R A B

    If R A B then R A B

    $$,0=

    K=k*+(!0,_D/b++,-01

    If R A B then R A B

    ,01yR A B1.

    2_lR A t B f2.

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    CU

    }!$R ~ ( A t ) ( B f )3.,-R ~ A ~ t B f4.2_lfR ~ t ~ A B ~ t5.

    R ~ t ~ A B6.-*R ~ A B7.

    2_lR A B8.

    N=QR8__k*,D8_($*_f.+D01

    =

    =

    =QR8_Z,$H"5_.+D01

    P=DAA5+*/k+/b*_k*,-)A^*k*+/b_k*L_,-)A^D/k_H_(l_D_1

    R A B

    R ~ B ~ A

    R A B

    R ~ B ~ A

    ,01)A^",-+QR8_2_l+/b0=

  • 7/29/20