Theorem LinearMap.IsIdempotentElem.isSymmetric_iff_orthogonal_range

Modification history

2025-07-28 23:36
Mathlib/Analysis/InnerProductSpace/Symmetric.lean
feat(LinearAlgebra/Projection): define `Submodule.IsCompl.projection` (#27369) …
Added LinearMap.IsIdempotentElem.isSymmetric_iff_orthogonal_rangeView on Github →