Theorem neqne 2348

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 2347	1 ⊢ (¬ 𝐴 = 𝐵 → 𝐴 ≠ 𝐵)

Syntax hints:  ¬ wn 3   → wi 4   = wceq 1348   ≠ wne 2340

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107

This theorem depends on definitions:  df-bi 116  df-ne 2341

This theorem is referenced by:  xaddf  9801  seq3f1olemstep  10457  dvdsabseq  11807  lgsval  13699