Users' Mathboxes Mathbox for Alexander van der Vekens < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  gricsym Structured version   Visualization version   GIF version

Theorem gricsym 47774
Description: Graph isomorphism is symmetric for hypergraphs. (Contributed by AV, 11-Nov-2022.) (Revised by AV, 3-May-2025.)
Assertion
Ref Expression
gricsym (𝐺 ∈ UHGraph → (𝐺𝑔𝑟 𝑆𝑆𝑔𝑟 𝐺))

Proof of Theorem gricsym
Dummy variable 𝑓 is distinct from all other variables.
StepHypRef Expression
1 brgric 47765 . . 3 (𝐺𝑔𝑟 𝑆 ↔ (𝐺 GraphIso 𝑆) ≠ ∅)
2 n0 4376 . . 3 ((𝐺 GraphIso 𝑆) ≠ ∅ ↔ ∃𝑓 𝑓 ∈ (𝐺 GraphIso 𝑆))
31, 2bitri 275 . 2 (𝐺𝑔𝑟 𝑆 ↔ ∃𝑓 𝑓 ∈ (𝐺 GraphIso 𝑆))
4 grimcnv 47763 . . . 4 (𝐺 ∈ UHGraph → (𝑓 ∈ (𝐺 GraphIso 𝑆) → 𝑓 ∈ (𝑆 GraphIso 𝐺)))
5 brgrici 47766 . . . 4 (𝑓 ∈ (𝑆 GraphIso 𝐺) → 𝑆𝑔𝑟 𝐺)
64, 5syl6 35 . . 3 (𝐺 ∈ UHGraph → (𝑓 ∈ (𝐺 GraphIso 𝑆) → 𝑆𝑔𝑟 𝐺))
76exlimdv 1932 . 2 (𝐺 ∈ UHGraph → (∃𝑓 𝑓 ∈ (𝐺 GraphIso 𝑆) → 𝑆𝑔𝑟 𝐺))
83, 7biimtrid 242 1 (𝐺 ∈ UHGraph → (𝐺𝑔𝑟 𝑆𝑆𝑔𝑟 𝐺))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wex 1777  wcel 2108  wne 2946  c0 4352   class class class wbr 5166  ccnv 5699  (class class class)co 7448  UHGraphcuhgr 29091   GraphIso cgrim 47745  𝑔𝑟 cgric 47746
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1793  ax-4 1807  ax-5 1909  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2158  ax-12 2178  ax-ext 2711  ax-sep 5317  ax-nul 5324  ax-pow 5383  ax-pr 5447  ax-un 7770
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 847  df-3an 1089  df-tru 1540  df-fal 1550  df-ex 1778  df-nf 1782  df-sb 2065  df-mo 2543  df-eu 2572  df-clab 2718  df-cleq 2732  df-clel 2819  df-nfc 2895  df-ne 2947  df-ral 3068  df-rex 3077  df-rab 3444  df-v 3490  df-sbc 3805  df-csb 3922  df-dif 3979  df-un 3981  df-in 3983  df-ss 3993  df-nul 4353  df-if 4549  df-pw 4624  df-sn 4649  df-pr 4651  df-op 4655  df-uni 4932  df-iun 5017  df-br 5167  df-opab 5229  df-mpt 5250  df-id 5593  df-xp 5706  df-rel 5707  df-cnv 5708  df-co 5709  df-dm 5710  df-rn 5711  df-res 5712  df-ima 5713  df-suc 6401  df-iota 6525  df-fun 6575  df-fn 6576  df-f 6577  df-f1 6578  df-fo 6579  df-f1o 6580  df-fv 6581  df-ov 7451  df-oprab 7452  df-mpo 7453  df-1st 8030  df-2nd 8031  df-1o 8522  df-map 8886  df-uhgr 29093  df-grim 47748  df-gric 47751
This theorem is referenced by:  gricsymb  47775  gricer  47777  grlicsym  47830  usgrexmpl12ngric  47853
  Copyright terms: Public domain W3C validator