13 lines
396 B
Text
13 lines
396 B
Text
LEAN_INFORMATION
|
|
position 671:8
|
|
A : Type,
|
|
decA : decidable_eq A,
|
|
ex_of_subcount_eq_ff : ∀ {l₁ l₂}, subcount l₁ l₂ = ff → (∃ a, ¬list.count a l₁ ≤ list.count a l₂),
|
|
a : A,
|
|
l₁ l₂ : list A,
|
|
h : subcount (a :: l₁) l₂ = ff,
|
|
i : list.count a (a :: l₁) ≤ list.count a l₂,
|
|
this : subcount l₁ l₂ ≠ ff,
|
|
this : subcount l₁ l₂ = tt
|
|
⊢ false
|
|
END_LEAN_INFORMATION
|