Theorem necomi 2394

Description: Inference from commutative law for inequality. (Contributed by NM, 17-Oct-2012.)

Hypothesis

Ref	Expression
necomi.1	⊢ 𝐴 ≠ 𝐵

Assertion

Ref	Expression
necomi	⊢ 𝐵 ≠ 𝐴

Proof of Theorem necomi

Step	Hyp	Ref	Expression
1		necomi.1	. 2 ⊢ 𝐴 ≠ 𝐵
2		necom 2393	. 2 ⊢ (𝐴 ≠ 𝐵 ↔ 𝐵 ≠ 𝐴)
3	1, 2	mpbi 144	1 ⊢ 𝐵 ≠ 𝐴

Syntax hints:   ≠ wne 2309

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 604  ax-in2 605  ax-5 1424  ax-gen 1426  ax-ext 2122

This theorem depends on definitions:  df-bi 116  df-cleq 2133  df-ne 2310

This theorem is referenced by:  0nep0  4097  xp01disj  6338  xp01disjl  6339  djulclb  6948  djuinr  6956  pnfnemnf  7844  mnfnepnf  7845  ltneii  7884  1ne0  8812  0ne2  8949  fzprval  9893  0tonninf  10243  1tonninf  10244