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Theorem gricrel 48540
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 48502 . . 3 𝑔𝑟 = ( GraphIso “ (V ∖ 1o))
2 cnvimass 6074 . . . 4 ( GraphIso “ (V ∖ 1o)) ⊆ dom GraphIso
3 grimfn 48500 . . . . 5 GraphIso Fn (V × V)
43fndmi 6629 . . . 4 dom GraphIso = (V × V)
52, 4sseqtri 3987 . . 3 ( GraphIso “ (V ∖ 1o)) ⊆ (V × V)
61, 5eqsstri 3985 . 2 𝑔𝑟 ⊆ (V × V)
7 relxp 5669 . 2 Rel (V × V)
8 relss 5758 . 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 3457  cdif 3904  wss 3907   × cxp 5649  ccnv 5650  dom cdm 5651  cima 5654  Rel wrel 5656  1oc1o 8434   GraphIso cgrim 48496  𝑔𝑟 cgric 48497
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1818  ax-4 1832  ax-5 1933  ax-6 1990  ax-7 2031  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2215  ax-ext 2737  ax-sep 5250  ax-nul 5260  ax-pow 5326  ax-pr 5394  ax-un 7722
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1566  df-fal 1576  df-ex 1803  df-nf 1807  df-sb 2094  df-mo 2569  df-eu 2599  df-clab 2744  df-cleq 2757  df-clel 2840  df-nfc 2914  df-ne 2961  df-ral 3080  df-rex 3090  df-rab 3418  df-v 3459  df-sbc 3748  df-csb 3856  df-dif 3910  df-un 3912  df-in 3914  df-ss 3924  df-nul 4289  df-if 4484  df-pw 4560  df-sn 4586  df-pr 4588  df-op 4592  df-uni 4868  df-iun 4953  df-br 5105  df-opab 5167  df-mpt 5186  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-res 5663  df-ima 5664  df-iota 6481  df-fun 6527  df-fn 6528  df-f 6529  df-f1 6530  df-f1o 6532  df-fv 6533  df-ov 7403  df-oprab 7404  df-mpo 7405  df-1st 7974  df-2nd 7975  df-map 8814  df-grim 48499  df-gric 48502
This theorem is referenced by: (None)
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