3 commits

Author	SHA1	Message	Date
Jeremy Avigad	c563548980	feat(library/data/set/basic.lean): add definitions and simplify proofs	2015-04-05 12:36:54 -04:00
Jeremy Avigad	c6c50a61b3	refactor(library/data/set/basic.lean): take advantage of extensionality in sets	2015-04-05 10:12:27 -04:00
Jeremy Avigad	6596217a84	refactor(library/data/set): expand set.lean to set directory	2015-04-05 09:27:15 -04:00