Theorem isStarProjection_iff_quasispectrum_subset_and_isSelfAdjoint

Modification history

2026-03-10 21:33
Mathlib/Analysis/CStarAlgebra/Projection.lean
feat(Analysis/CStarAlgebra): `IsIdempotentElem a ↔ spectrum R a ⊆ {0, 1}` (#35916) …
Added isStarProjection_iff_quasispectrum_subset_and_isSelfAdjointView on Github →