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Theorem with_sign.not_internal

Modification history

2023-05-30 23:18
counterexamples/direct_sum_is_internal.lean
chore(archive + counterexamples): namespaces imo, theorems_100, counterexample, plus three more (#19129) …
Deleted with_sign.not_internalView on Github →
2022-05-24 14:54
counterexamples/direct_sum_is_internal.lean
refactor(algebra/direct_sum/basic): use the new polymorphic subobject API (#14341) …
Modified with_sign.not_internalView on Github →
2021-10-01 15:54
counterexamples/direct_sum_is_internal.lean
feat(linear_algebra/direct_sum): `submodule_is_internal_iff_independent_and_supr_eq_top` (#9214) …
Added with_sign.not_internalView on Github →