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GT LaBRI27 novembre 2015
Xavier ViennotCNRS, LaBRI,
Bordeaux, France
Bijections forrhombic alternative tableaux
(work with Olya Mandelshtam, Berkeley)
rappel:résumé de l’exposé précédent
«assemblées» and species
petit rappel
from «assemblées» of permutationsto
rhombic alternative tableaux
7
9,10
1
7
7 7 7
7 7
1
222
1
1
1,2
1,21,2
1,21,2
12
12
12
1010
11
9,109,10
11
11
11
8
8
5 5 55
6
9
9
9
3 3
∅
∅ ∅
∅
∅
∅ ∅
∅
∅
∅
8,9,10,11
8,9,10,11
8,9,10,11
5,65,6
5,6
5,6
(4)
8,9,10
from rhombic alternative tableauxto
assemblée of permutations
bijection
assemblée of permutations
(subset of r elements among n ) x (r-truncated subexceedant functions)
further enumerative results
tree-like rhombic tableaux
further work:
relation withKoorwinder-Macdonald polynomials
Thank you !