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Theorem gricrel 48046
Description: The "is isomorphic to" relation for graphs is a relation. (Contributed by AV, 11-Nov-2022.) (Revised by AV, 5-May-2025.)
Assertion
Ref Expression
gricrel Rel ≃𝑔𝑟

Proof of Theorem gricrel
StepHypRef Expression
1 df-gric 48008 . . 3 𝑔𝑟 = ( GraphIso “ (V ∖ 1o))
2 cnvimass 6037 . . . 4 ( GraphIso “ (V ∖ 1o)) ⊆ dom GraphIso
3 grimfn 48006 . . . . 5 GraphIso Fn (V × V)
43fndmi 6592 . . . 4 dom GraphIso = (V × V)
52, 4sseqtri 3979 . . 3 ( GraphIso “ (V ∖ 1o)) ⊆ (V × V)
61, 5eqsstri 3977 . 2 𝑔𝑟 ⊆ (V × V)
7 relxp 5639 . 2 Rel (V × V)
8 relss 5728 . 2 ( ≃𝑔𝑟 ⊆ (V × V) → (Rel (V × V) → Rel ≃𝑔𝑟 ))
96, 7, 8mp2 9 1 Rel ≃𝑔𝑟
Colors of variables: wff setvar class
Syntax hints:  Vcvv 3437  cdif 3895  wss 3898   × cxp 5619  ccnv 5620  dom cdm 5621  cima 5624  Rel wrel 5626  1oc1o 8386   GraphIso cgrim 48002  𝑔𝑟 cgric 48003
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 2182  ax-ext 2705  ax-sep 5238  ax-nul 5248  ax-pow 5307  ax-pr 5374  ax-un 7676
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 2537  df-eu 2566  df-clab 2712  df-cleq 2725  df-clel 2808  df-nfc 2882  df-ne 2930  df-ral 3049  df-rex 3058  df-rab 3397  df-v 3439  df-sbc 3738  df-csb 3847  df-dif 3901  df-un 3903  df-in 3905  df-ss 3915  df-nul 4283  df-if 4477  df-pw 4553  df-sn 4578  df-pr 4580  df-op 4584  df-uni 4861  df-iun 4945  df-br 5096  df-opab 5158  df-mpt 5177  df-id 5516  df-xp 5627  df-rel 5628  df-cnv 5629  df-co 5630  df-dm 5631  df-rn 5632  df-res 5633  df-ima 5634  df-iota 6444  df-fun 6490  df-fn 6491  df-f 6492  df-f1 6493  df-f1o 6495  df-fv 6496  df-ov 7357  df-oprab 7358  df-mpo 7359  df-1st 7929  df-2nd 7930  df-map 8760  df-grim 48005  df-gric 48008
This theorem is referenced by: (None)
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