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-rw-r--r--LeanAStar/Finite.lean2
1 files changed, 1 insertions, 1 deletions
diff --git a/LeanAStar/Finite.lean b/LeanAStar/Finite.lean
index 302e3b1..cbd8ee3 100644
--- a/LeanAStar/Finite.lean
+++ b/LeanAStar/Finite.lean
@@ -187,7 +187,7 @@ protected theorem Finite.set_worker_size (α : Type u) [Finite α] [BEq α] [Has
subst n
have h₂ := h₂ ⟨m+1,h₁⟩ (Fin.le_refl _)
have hx := Std.HashSet.mem_iff_contains.mp hx
- exact absurd hx (Bool.eq_false_iff.mp h₂)
+ exact absurd hx h₂
termination_by _ n => n.val
theorem Finite.set_size_eq_cardinality (α : Type u) [Finite α] [BEq α] [Hashable α] [LawfulBEq α] : (Finite.set α).size = Finite.cardinality α := by