Mathlib v3 is deprecated. Go to Mathlib v4

Theorem prod.fst_sub

Modification history

2022-03-01 19:11
src/algebra/group/prod.lean
chore(algebra/group/prod): `prod.swap` commutes with arithmetic (#12367) …
Deleted prod.fst_subView on Github →
2020-04-01 06:47
src/algebra/group/prod.lean
refactor(group_theory/submonoid): review API (#2173) …
Modified prod.fst_subView on Github →
2020-03-05 13:17
src/algebra/pi_instances.lean
chore(*): switch to lean 3.6.1 (#2064) …
Added prod.fst_subView on Github →