2 commits

Author	SHA1	Message	Date
Jeremy Avigad	b68ce77650	refactor/feat(library/data/nat): fix up sub and div, rename theorems, add theorems	2015-01-13 11:56:25 -05:00
Leonardo de Moura	7a3a73d931	refactor(library/data/nat): move nat.comm_semiring to separate file	2015-01-08 12:12:30 -08:00