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Metamath Proof Explorer

Theorem 2ne0

Description: The number 2 is nonzero. (Contributed by NM, 9-Nov-2007)

Ref Expression
Assertion 2ne0 2 ≠ 0

Proof

Step Hyp Ref Expression
1 2nn ⊢ 2 ∈ ℕ
2 1 nnne0i ⊢ 2 ≠ 0