Commit 2026-06-10 10:22 22e4e692
View on Github →refactor(Analysis/Normed/Module/Complemented): add IsCompl.isTopCompl_of_isClosed and isTopCompl_iff_isCompl_isClosed (#39815)
Adds two theorems:
IsCompl.isTopCompl_of_isClosed: In a Banach space, two closed submodules that are algebraic complements are topologicalisTopCompl_iff_isCompl_isClosed:pandqare topological complements if and only ifpandqare algebraic complements andpandqare both closed. Additionally much of theClosedComplresults are deprecated in favour of usingTopCompl.