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lemma proved term proof

setVar_ne

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formal statement (Lean)

  24lemma setVar_ne {n} (σ : PartialAssignment n) (v w : Var n) (b : Bool) (hvw : w ≠ v) :
  25    setVar σ v b w = σ w := by

proof body

Term-mode proof.

  26  unfold setVar
  27  simp only [ite_eq_right_iff]
  28  intro heq
  29  exact absurd heq hvw
  30
  31/-- Evaluate a literal under a partial assignment. -/

used by (2)

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depends on (3)

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