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jstoobysmith 2024-07-09 19:22:16 -04:00
parent b5a22f9685
commit f83908e259
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HepLean/AnomalyCancellation/PureU1/Even/BasisLinear.lean
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@ -623,7 +623,8 @@ lemma Pa'_eq (f f' : (Fin n.succ) ⊕ (Fin n) → ℚ) : Pa' f = Pa' f' ↔ f =
intro h
rw [h]
/-- A helper function for what follows. TODO: replace this with mathlib functions. -/
/-! TODO: Replace the definition of `join` with a Mathlib definition, most likely `Sum.elim`. -/
/-- A helper function for what follows. -/
def join (g : Fin n.succ → ℚ) (f : Fin n → ℚ) : (Fin n.succ) ⊕ (Fin n) → ℚ := fun i =>
match i with
| .inl i => g i