Theorem Matrix.PosSemidef.commute_iff

Modification history

2026-03-25 05:05
Mathlib/Analysis/Matrix/Order.lean
chore: remove declarations deprecated between 2021-03-24 and 2025-09-24 (#37118) …
Deleted Matrix.PosSemidef.commute_iffView on Github →
2025-10-08 02:34
Mathlib/Analysis/Matrix/Order.lean
chore(LinearAlgebra/Matrix/PosDef): deprecate `PosSemidef.sqrt` in favour of `CFC` (#29896) …
Modified Matrix.PosSemidef.commute_iffView on Github →
2025-09-19 07:04
Mathlib/LinearAlgebra/Matrix/PosDef.lean
chore(*): drop some `Decidable`/`Fintype` assumptions (#29785) …
Modified Matrix.PosSemidef.commute_iffView on Github →
2025-09-09 10:44
Mathlib/LinearAlgebra/Matrix/PosDef.lean
feat(LinearAlgebra/Matrix/PosDef): positive (semi-)definite matrices commute iff their product is positive (semi-)definite (#28616) …
Added Matrix.PosSemidef.commute_iffView on Github →