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Metamath Proof Explorer

Theorem 4ne0

Description: The number 4 is nonzero. (Contributed by David A. Wheeler, 5-Dec-2018)

		Ref	Expression
	Assertion	4ne0	$⊢ 4 \neq 0$

Step	Hyp	Ref	Expression
1		4nn	$⊢ 4 \in ℕ$
2	1	nnne0i	$⊢ 4 \neq 0$