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Def direct_sum.submodule_is_internal.isometry_L2_of_orthogonal_family

Modification history

2022-05-24 14:54
src/analysis/inner_product_space/pi_L2.lean
refactor(algebra/direct_sum/basic): use the new polymorphic subobject API (#14341) …
Deleted direct_sum.submodule_is_internal.isometry_L2_of_orthogonal_familyView on Github →
2021-10-21 15:43
src/analysis/inner_product_space/pi_L2.lean
feat(analysis/inner_product_space): define `orthogonal_family` of subspaces (#9718) …
Added direct_sum.submodule_is_internal.isometry_L2_of_orthogonal_familyView on Github →