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Theorem gricrel 48018
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 47980 . . 3 𝑔𝑟 = ( GraphIso “ (V ∖ 1o))
2 cnvimass 6030 . . . 4 ( GraphIso “ (V ∖ 1o)) ⊆ dom GraphIso
3 grimfn 47978 . . . . 5 GraphIso Fn (V × V)
43fndmi 6585 . . . 4 dom GraphIso = (V × V)
52, 4sseqtri 3978 . . 3 ( GraphIso “ (V ∖ 1o)) ⊆ (V × V)
61, 5eqsstri 3976 . 2 𝑔𝑟 ⊆ (V × V)
7 relxp 5632 . 2 Rel (V × V)
8 relss 5721 . 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 3436  cdif 3894  wss 3897   × cxp 5612  ccnv 5613  dom cdm 5614  cima 5617  Rel wrel 5619  1oc1o 8378   GraphIso cgrim 47974  𝑔𝑟 cgric 47975
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 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-sep 5232  ax-nul 5242  ax-pow 5301  ax-pr 5368  ax-un 7668
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 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-ne 2929  df-ral 3048  df-rex 3057  df-rab 3396  df-v 3438  df-sbc 3737  df-csb 3846  df-dif 3900  df-un 3902  df-in 3904  df-ss 3914  df-nul 4281  df-if 4473  df-pw 4549  df-sn 4574  df-pr 4576  df-op 4580  df-uni 4857  df-iun 4941  df-br 5090  df-opab 5152  df-mpt 5171  df-id 5509  df-xp 5620  df-rel 5621  df-cnv 5622  df-co 5623  df-dm 5624  df-rn 5625  df-res 5626  df-ima 5627  df-iota 6437  df-fun 6483  df-fn 6484  df-f 6485  df-f1 6486  df-f1o 6488  df-fv 6489  df-ov 7349  df-oprab 7350  df-mpo 7351  df-1st 7921  df-2nd 7922  df-map 8752  df-grim 47977  df-gric 47980
This theorem is referenced by: (None)
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