4 commits

Author	SHA1	Message	Date
Leonardo de Moura	724aacb2c1	fix(library): remove "-[notations]" hack at "open -[notations] algebra"	2015-11-08 14:04:55 -08:00
Leonardo de Moura	a618bd7d6c	refactor(library): use type classes for encoding all arithmetic operations ... Before this commit we were using overloading for concrete structures and type classes for abstract ones. This is the first of series of commits that implement this modification	2015-11-08 14:04:54 -08:00
Jeremy Avigad	70407473c2	feat(library/theories/combinatorics/choose): begin theory of binomial coefficients	2015-07-11 19:01:43 -04:00
Leonardo de Moura	e33946ff02	feat(library/data/nat/fact): define factorial	2015-07-02 20:25:34 -07:00