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Metamath Proof Explorer

Theorem indm

Description: De Morgan's law for intersection. Theorem 5.2(13') of Stoll p. 19. (Contributed by NM, 18-Aug-2004)

		Ref	Expression
	Assertion	indm	$⊢ V ∖ (A \cap B) = (V ∖ A) \cup (V ∖ B)$

Step	Hyp	Ref	Expression
1		difindi	$⊢ V ∖ (A \cap B) = (V ∖ A) \cup (V ∖ B)$