4 commits

Author	SHA1	Message	Date
Floris van Doorn	aa191493e9	give alternative definition of free group on a set with decidable equality	2018-01-17 19:18:13 -05:00
Jeremy Avigad	6e2d8807f4	get everything to compile	2017-08-21 17:05:59 -04:00
Jeremy Avigad	345c45e07c	revise quotient_group	2017-08-17 17:07:10 -04:00
Jeremy Avigad	1cb3e5c658	change terminology set -> property	2017-08-17 17:07:10 -04:00