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Theorem direct_sum.subgroup_coe_ring_hom_of

Modification history

2022-05-24 14:54
src/algebra/direct_sum/internal.lean
refactor(algebra/direct_sum/basic): use the new polymorphic subobject API (#14341) …
Deleted direct_sum.subgroup_coe_ring_hom_ofView on Github →
2021-11-03 22:10
src/algebra/direct_sum/internal.lean
refactor(algebra/direct_sum): rework internally-graded objects (#10127) …
Added direct_sum.subgroup_coe_ring_hom_ofView on Github →