2 commits

Author	SHA1	Message	Date
Jeremy Avigad	ff701a9812	feat(library/data/nat/bigops.lean): add finite products and sums for nat	2015-05-16 22:26:59 +10:00
Jeremy Avigad	eae047bd31	refactor,feat(library/{data,algebra}): move bigops to algebra, define sums	2015-05-16 18:42:13 +10:00