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Def direct_sum

Modification history

2020-10-29 18:26
src/algebra/direct_sum.lean
feat(algebra/direct_sum*): relax a lot of constraints to add_comm_monoid (#3537)
Modified direct_sumView on Github →
2019-01-28 10:14
src/algebra/direct_sum.lean
refactor(linear_algebra/direct_sum_module): move to algebra/direct_sum
Modified direct_sumView on Github →
2018-11-06 12:40
linear_algebra/direct_sum_module.lean
feat(linear_algebra): direct sum
Added direct_sumView on Github →