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Def ring_hom.cod_srestrict

Modification history

2022-06-09 09:58
src/ring_theory/subsemiring/basic.lean
refactor(algebra/sub{monoid,group,ring,semiring,field}): merge together the `restrict` and `cod_restrict` helpers (#14548) …
Deleted ring_hom.cod_srestrictView on Github →
2020-05-29 06:50
src/ring_theory/subsemiring.lean
feat(ring_theory): define subsemirings (#2837) …
Added ring_hom.cod_srestrictView on Github →