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Theorem direct_sum.coe_mul_apply_add_submonoid

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.coe_mul_apply_add_submonoidView on Github →
2021-12-05 16:33
src/algebra/direct_sum/internal.lean
feat(ring_theory/graded_algebra): projection map of graded algebra (#10116) …
Added direct_sum.coe_mul_apply_add_submonoidView on Github →