Theorem opthne 5458

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 5457	. 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 2145   ≠ wne 2955  Vcvv 3450  ⟨cop 4590

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-ext 2732  ax-sep 5251  ax-pr 5398

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2100  df-clab 2739  df-cleq 2752  df-clel 2835  df-ne 2956  df-rab 3413  df-v 3452  df-dif 3902  df-un 3904  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591

This theorem is used by:  xpord2lem  8140  xpord2pred  8143  xpord2indlem  8145  degenmgm  19050  degenmgm2  19053  m2detleib  22853  addsqnreup  27679  mulsval  28374  gpgedg2ov  48982  gpgedg2iv  48983  gpg5nbgrvtx03starlem1  48984  gpg5nbgrvtx03starlem2  48985  gpg5nbgrvtx03starlem3  48986  gpg5nbgrvtx13starlem1  48987  gpg5nbgrvtx13starlem2  48988  gpg5nbgrvtx13starlem3  48989  gpg3nbgrvtx0  48992  gpg3nbgrvtx0ALT  48993  gpg3nbgrvtx1  48994  gpg3kgrtriex  49005  gpgprismgr4cycllem2  49012  gpgprismgr4cycllem7  49017  gpg5edgnedg  49046  zlmodzxzldeplem  49428  line2x  49684  inlinecirc02plem  49716