4 commits

Author	SHA1	Message	Date
Leonardo de Moura	039f1de524	fix(library/data/countable): typos	2015-04-14 21:26:56 -07:00
Leonardo de Moura	9534cfe92f	feat(library/data/countable): prove that (list A) is countable if A is countable	2015-04-14 21:17:18 -07:00
Leonardo de Moura	a7db8a2bac	theorem(library/data/countable): prove that the product of two countable types is countable	2015-04-14 20:39:58 -07:00
Leonardo de Moura	2453a6ab45	feat(library/data/countable): define countable type class	2015-04-14 09:01:15 -07:00