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Def ring_hom.cod_restrict

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) …
Added ring_hom.cod_restrictView on Github →
2021-08-01 17:17
src/deprecated/subring.lean
chore(deprecated/*): Make deprecated classes into structures (#8178) …
Deleted ring_hom.cod_restrictView on Github →
2020-08-26 14:45
src/deprecated/subring.lean
feat(ring_theory/bundled_subring): add bundled subrings (#3886)
Modified ring_hom.cod_restrictView on Github →
2020-03-13 09:00
src/ring_theory/subring.lean
refactor(*): migrate some files to bundled ring homs (#2133) …
Added ring_hom.cod_restrictView on Github →