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ClassFieldTheory
.
Mathlib
.
SetTheory
.
Cardinal
.
Finite
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Imports
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Mathlib.SetTheory.Cardinal.Finite
Imported by
Nat
.
card_ne_zero'
source
@[simp]
theorem
Nat
.
card_ne_zero'
{
α
:
Type
u_1}
[
Nonempty
α
]
[
Finite
α
]
:
Nat.card
α
≠
0