inicio — Instituto de Matemáticas | UNAMurrutia/online_papers/Opt...has raised many problems...
6
inicio — Instituto de Matemáticas | UNAMurrutia/online_papers/Opt...has raised many problems ranging from polygon de- composition and problem complexity to combinato- rial structure
![BIJECTIVEPROOF PROBLEMS - Mathematicsmath.mit.edu/~rstan/bij.pdf21. [2–] If p is prime and a ∈ P, then ap−a is divisible by p.(A combinato-rial proof would consist of exhibiting](https://img.pdfslide.net/doc/110x75/604884e81e01c038fb556a59/bijectiveproof-problems-rstanbijpdf-21-2a-if-p-is-prime-and-a-a-p-then.jpg)
