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Theorem
IsIdempotentElem.star_iff
Modification history
2025-07-13 04:28
Mathlib/Algebra/Star/Module.lean
feat(Analysis/InnerProductSpace/Adjoint): idempotent operator `T` is self-adjoint iff `(range T)ᗮ = ker T` (#26855) …
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IsIdempotentElem.star_iff
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