Theorem opthne 5451

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 5450	. 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 2956  Vcvv 3451  ⟨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 2733  ax-sep 5249  ax-pr 5391

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 2740  df-cleq 2753  df-clel 2836  df-ne 2957  df-rab 3414  df-v 3453  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  8152  xpord2pred  8155  xpord2indlem  8157  degenmgm  19130  degenmgm2  19133  m2detleib  22939  addsqnreup  27763  mulsval  28488  gpgedg2ov  49133  gpgedg2iv  49134  gpg5nbgrvtx03starlem1  49135  gpg5nbgrvtx03starlem2  49136  gpg5nbgrvtx03starlem3  49137  gpg5nbgrvtx13starlem1  49138  gpg5nbgrvtx13starlem2  49139  gpg5nbgrvtx13starlem3  49140  gpg3nbgrvtx0  49143  gpg3nbgrvtx0ALT  49144  gpg3nbgrvtx1  49145  gpg3kgrtriex  49156  gpgprismgr4cycllem2  49163  gpgprismgr4cycllem7  49168  gpg5edgnedg  49197  zlmodzxzldeplem  49579  line2x  49835  inlinecirc02plem  49867