Theorem neqcomd 2237

Description: Commute an inequality. (Contributed by Rohan Ridenour, 3-Aug-2023.)

Hypothesis

Ref	Expression
neqcomd.1	⊢ (𝜑 → ¬ 𝐴 = 𝐵)

Assertion

Ref	Expression
neqcomd	⊢ (𝜑 → ¬ 𝐵 = 𝐴)

Proof of Theorem neqcomd

Step	Hyp	Ref	Expression
1		neqcomd.1	. 2 ⊢ (𝜑 → ¬ 𝐴 = 𝐵)
2		eqcom 2234	. 2 ⊢ (𝐴 = 𝐵 ↔ 𝐵 = 𝐴)
3	1, 2	sylnib 683	1 ⊢ (𝜑 → ¬ 𝐵 = 𝐴)

Syntax hints:  ¬ wn 3   → wi 4   = wceq 1398

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-5 1496  ax-gen 1498  ax-ext 2214

This theorem depends on definitions:  df-bi 117  df-cleq 2225

This theorem is referenced by:  gsum0g  13598  logbgcd1irraplemexp  15820  structiedg0val  16022  vdegp1aid  16296  qdiff  16820