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Questions related to permutations, bijections from a finite (or sometimes infinite) set to itself.

6 votes

What mathematical formalism might be used to disprove natural selection, on the basis that t...

Your view, that "Darwinism" is insufficient to explain the appearance of all genetic variation, was also exactly the view of M.-P. Schützenberger, one (along with e.g. Noam Chomsky) of the founders of …
Carl-Fredrik Nyberg Brodda's user avatar
13 votes

Conceptual reason why the sign of a permutation is well-defined?

Theorem: Let $S, T$ be two permutations which are respectively the product of $\alpha$ and $\beta$ transpositions. …
Carl-Fredrik Nyberg Brodda's user avatar