Theorem opthne 5450

Description: Two ordered pairs are not equal iff their first components or their second components are not equal. (Contributed by AV, 13-Dec-2018.)

Hypotheses

Ref	Expression
opthne.1	⊢ 𝐴 ∈ V
opthne.2	⊢ 𝐵 ∈ V

Assertion

Ref	Expression
opthne	⊢ (⟨𝐴, 𝐵⟩ ≠ ⟨𝐶, 𝐷⟩ ↔ (𝐴 ≠ 𝐶 ∨ 𝐵 ≠ 𝐷))

Proof of Theorem opthne

Step	Hyp	Ref	Expression
1		opthne.1	. 2 ⊢ 𝐴 ∈ V
2		opthne.2	. 2 ⊢ 𝐵 ∈ V
3		opthneg 5449	. 2 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (⟨𝐴, 𝐵⟩ ≠ ⟨𝐶, 𝐷⟩ ↔ (𝐴 ≠ 𝐶 ∨ 𝐵 ≠ 𝐷)))
4	1, 2, 3	mp2an 705	1 ⊢ (⟨𝐴, 𝐵⟩ ≠ ⟨𝐶, 𝐷⟩ ↔ (𝐴 ≠ 𝐶 ∨ 𝐵 ≠ 𝐷))

This proof depends on syntax axioms:   ↔ wb 209   ∨ wo 861   ∈ wcel 2144   ≠ wne 2955  Vcvv 3450  ⟨cop 4834

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-ext 2732  ax-sep 5248  ax-pr 5390

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-sb 2099  df-clab 2739  df-cleq 2752  df-clel 2835  df-ne 2956  df-rab 3413  df-v 3452  df-ss 3896  df-dif 4047  df-un 4151  df-nul 4279  df-if 4482  df-sn 4585  df-pr 4587  df-op 4835

This theorem is used by:  xpord2lem  8162  xpord2pred  8165  xpord2indlem  8167  degenmgm  19143  degenmgm2  19146  m2detleib  22952  addsqnreup  27776  mulsval  28501  gpgedg2ov  49258  gpgedg2iv  49259  gpg5nbgrvtx03starlem1  49260  gpg5nbgrvtx03starlem2  49261  gpg5nbgrvtx03starlem3  49262  gpg5nbgrvtx13starlem1  49263  gpg5nbgrvtx13starlem2  49264  gpg5nbgrvtx13starlem3  49265  gpg3nbgrvtx0  49268  gpg3nbgrvtx0ALT  49269  gpg3nbgrvtx1  49270  gpg3kgrtriex  49281  gpgprismgr4cycllem2  49288  gpgprismgr4cycllem7  49293  gpg5edgnedg  49322  zlmodzxzldeplem  49704