Users' Mathboxes Mathbox for Zhi Wang < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  oppfvallem Structured version   Visualization version   GIF version

Theorem oppfvallem 49376
Description: Lemma for oppfval 49377. (Contributed by Zhi Wang, 13-Nov-2025.)
Assertion
Ref Expression
oppfvallem (𝐹(𝐶 Func 𝐷)𝐺 → (Rel 𝐺 ∧ Rel dom 𝐺))

Proof of Theorem oppfvallem
StepHypRef Expression
1 eqid 2736 . . . 4 (Base‘𝐶) = (Base‘𝐶)
2 id 22 . . . 4 (𝐹(𝐶 Func 𝐷)𝐺𝐹(𝐶 Func 𝐷)𝐺)
31, 2funcfn2 17793 . . 3 (𝐹(𝐶 Func 𝐷)𝐺𝐺 Fn ((Base‘𝐶) × (Base‘𝐶)))
4 fnrel 6594 . . 3 (𝐺 Fn ((Base‘𝐶) × (Base‘𝐶)) → Rel 𝐺)
53, 4syl 17 . 2 (𝐹(𝐶 Func 𝐷)𝐺 → Rel 𝐺)
6 relxp 5642 . . 3 Rel ((Base‘𝐶) × (Base‘𝐶))
73fndmd 6597 . . . 4 (𝐹(𝐶 Func 𝐷)𝐺 → dom 𝐺 = ((Base‘𝐶) × (Base‘𝐶)))
87releqd 5728 . . 3 (𝐹(𝐶 Func 𝐷)𝐺 → (Rel dom 𝐺 ↔ Rel ((Base‘𝐶) × (Base‘𝐶))))
96, 8mpbiri 258 . 2 (𝐹(𝐶 Func 𝐷)𝐺 → Rel dom 𝐺)
105, 9jca 511 1 (𝐹(𝐶 Func 𝐷)𝐺 → (Rel 𝐺 ∧ Rel dom 𝐺))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395   class class class wbr 5098   × cxp 5622  dom cdm 5624  Rel wrel 5629   Fn wfn 6487  cfv 6492  (class class class)co 7358  Basecbs 17136   Func cfunc 17778
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-10 2146  ax-11 2162  ax-12 2184  ax-ext 2708  ax-rep 5224  ax-sep 5241  ax-nul 5251  ax-pow 5310  ax-pr 5377  ax-un 7680
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3061  df-rab 3400  df-v 3442  df-sbc 3741  df-csb 3850  df-dif 3904  df-un 3906  df-in 3908  df-ss 3918  df-nul 4286  df-if 4480  df-pw 4556  df-sn 4581  df-pr 4583  df-op 4587  df-uni 4864  df-iun 4948  df-br 5099  df-opab 5161  df-mpt 5180  df-id 5519  df-xp 5630  df-rel 5631  df-cnv 5632  df-co 5633  df-dm 5634  df-rn 5635  df-iota 6448  df-fun 6494  df-fn 6495  df-f 6496  df-fv 6500  df-ov 7361  df-oprab 7362  df-mpo 7363  df-map 8765  df-ixp 8836  df-func 17782
This theorem is referenced by:  oppfval  49377
  Copyright terms: Public domain W3C validator