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jstoobysmith 2025-02-07 15:43:59 +00:00
parent b82791d671
commit f8f1e1757f
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HepLean/PerturbationTheory/WickContraction/Involutions.lean
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@ -146,7 +146,7 @@ lemma fromInvolution_toInvolution (f : {f : Fin n → Fin n // Function.Involuti
simp only [fromInvolution_getDual?_isSome, ne_eq, Decidable.not_not] at h
exact id (Eq.symm h)
/-- The equivalence btween Wick contractions for `n` and involutions of `Fin n`.
/-- The equivalence between Wick contractions for `n` and involutions of `Fin n`.
The involution of `Fin n` associated with a Wick contraction `c : WickContraction n` as follows.
If `i : Fin n` is contracted in `c` then it is taken to its dual, otherwise
it is taken to itself. -/