Theorem ContinuousLinearMap.IsIdempotentElem.isSymmetric_iff_orthogonal_range

Modification history

2026-01-02 15:12
Mathlib/Analysis/InnerProductSpace/Symmetric.lean
chore(Topology/Algebra/Module/LinearMap): deprecate duplicate lemmas (#33341) …
Deleted ContinuousLinearMap.IsIdempotentElem.isSymmetric_iff_orthogonal_rangeView on Github →
2025-08-19 21:26
Mathlib/Analysis/InnerProductSpace/Adjoint.lean
feat(Analysis/InnerProductSpace/Projection): define symmetric projections (#27642) …
Modified ContinuousLinearMap.IsIdempotentElem.isSymmetric_iff_orthogonal_rangeView on Github →
2025-07-28 23:36
Mathlib/Analysis/InnerProductSpace/Adjoint.lean
feat(LinearAlgebra/Projection): define `Submodule.IsCompl.projection` (#27369) …
Added ContinuousLinearMap.IsIdempotentElem.isSymmetric_iff_orthogonal_rangeView on Github →