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doc: Edits to Wick theorem docs

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jstoobysmith 2025-02-10 10:21:57 +00:00
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HepLean/PerturbationTheory/FieldOpFreeAlgebra/TimeOrder.lean
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@ -30,6 +30,8 @@ open HepLean.List
`FieldOpFreeAlgebra 𝓕 →ₗ[ℂ] FieldOpFreeAlgebra 𝓕`
defined by its action on the basis `ofCrAnListF φs`, taking
`ofCrAnListF φs` to `crAnTimeOrderSign φs • ofCrAnListF (crAnTimeOrderList φs)`.
That is, `timeOrderF` time-orders the field operators and multiplies by the sign of the
time order.
The notation `𝓣ᶠ(a)` is used for `timeOrderF a` -/
def timeOrderF : FieldOpFreeAlgebra 𝓕 →ₗ[ℂ] FieldOpFreeAlgebra 𝓕 :=