Jeremy Avigad 3fc74c2ba8 feat(library/theories/combinatorics/choose): show the number of subsets of s of size k is choose (card s) k		2015-07-27 07:46:59 -07:00
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choose.lean	feat(library/theories/combinatorics/choose): show the number of subsets of s of size k is choose (card s) k	2015-07-27 07:46:59 -07:00
combinatorics.md	feat(library/theories/combinatorics/choose): begin theory of binomial coefficients	2015-07-11 19:01:43 -04:00