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docs: Docs for Wick contractions

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jstoobysmith 2025-02-07 06:58:41 +00:00
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7
HepLean/PerturbationTheory/WickContraction/UncontractedList.lean
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@ -314,8 +314,11 @@ lemma take_uncontractedIndexEquiv_symm (k : c.uncontracted) :
-/
/-- Given a Wick Contraction `φsΛ` for a list of states `φs`. The list of uncontracted
states in `φs`. -/
/-- Given a Wick Contraction `φsΛ` of a list `φs` of `𝓕.FieldOp`. The list
`φsΛ.uncontractedListGet` of `𝓕.FieldOp` is defined as the list `φs` with
all contracted positions removed, leaving the uncontracted `𝓕.FieldOp`.
The notation `[φsΛ]ᵘᶜ` is used for `φsΛ.uncontractedListGet`. -/
def uncontractedListGet {φs : List 𝓕.FieldOp} (φsΛ : WickContraction φs.length) :
List 𝓕.FieldOp := φsΛ.uncontractedList.map φs.get