Theorem neqne 2367

Description: From non-equality to inequality. (Contributed by Glauco Siliprandi, 11-Dec-2019.)

Assertion

Ref	Expression
neqne	⊢ (¬ 𝐴 = 𝐵 → 𝐴 ≠ 𝐵)

Proof of Theorem neqne

Step	Hyp	Ref	Expression
1		id 19	. 2 ⊢ (¬ 𝐴 = 𝐵 → ¬ 𝐴 = 𝐵)
2	1	neqned 2366	1 ⊢ (¬ 𝐴 = 𝐵 → 𝐴 ≠ 𝐵)

Syntax hints:  ¬ wn 3   → wi 4   = wceq 1363   ≠ wne 2359

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108

This theorem depends on definitions:  df-bi 117  df-ne 2360

This theorem is referenced by:  xaddf  9861  seq3f1olemstep  10518  dvdsabseq  11870  lgsval  14788