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Theorem opfusgr 27032
Description: A finite simple graph represented as ordered pair. (Contributed by AV, 23-Oct-2020.)
Assertion
Ref Expression
opfusgr ((𝑉𝑋𝐸𝑌) → (⟨𝑉, 𝐸⟩ ∈ FinUSGraph ↔ (⟨𝑉, 𝐸⟩ ∈ USGraph ∧ 𝑉 ∈ Fin)))

Proof of Theorem opfusgr
StepHypRef Expression
1 eqid 2818 . . 3 (Vtx‘⟨𝑉, 𝐸⟩) = (Vtx‘⟨𝑉, 𝐸⟩)
21isfusgr 27027 . 2 (⟨𝑉, 𝐸⟩ ∈ FinUSGraph ↔ (⟨𝑉, 𝐸⟩ ∈ USGraph ∧ (Vtx‘⟨𝑉, 𝐸⟩) ∈ Fin))
3 opvtxfv 26716 . . . 4 ((𝑉𝑋𝐸𝑌) → (Vtx‘⟨𝑉, 𝐸⟩) = 𝑉)
43eleq1d 2894 . . 3 ((𝑉𝑋𝐸𝑌) → ((Vtx‘⟨𝑉, 𝐸⟩) ∈ Fin ↔ 𝑉 ∈ Fin))
54anbi2d 628 . 2 ((𝑉𝑋𝐸𝑌) → ((⟨𝑉, 𝐸⟩ ∈ USGraph ∧ (Vtx‘⟨𝑉, 𝐸⟩) ∈ Fin) ↔ (⟨𝑉, 𝐸⟩ ∈ USGraph ∧ 𝑉 ∈ Fin)))
62, 5syl5bb 284 1 ((𝑉𝑋𝐸𝑌) → (⟨𝑉, 𝐸⟩ ∈ FinUSGraph ↔ (⟨𝑉, 𝐸⟩ ∈ USGraph ∧ 𝑉 ∈ Fin)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 207  wa 396  wcel 2105  cop 4563  cfv 6348  Fincfn 8497  Vtxcvtx 26708  USGraphcusgr 26861  FinUSGraphcfusgr 27025
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1787  ax-4 1801  ax-5 1902  ax-6 1961  ax-7 2006  ax-8 2107  ax-9 2115  ax-10 2136  ax-11 2151  ax-12 2167  ax-ext 2790  ax-sep 5194  ax-nul 5201  ax-pow 5257  ax-pr 5320  ax-un 7450
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 842  df-3an 1081  df-tru 1531  df-ex 1772  df-nf 1776  df-sb 2061  df-mo 2615  df-eu 2647  df-clab 2797  df-cleq 2811  df-clel 2890  df-nfc 2960  df-ral 3140  df-rex 3141  df-rab 3144  df-v 3494  df-sbc 3770  df-dif 3936  df-un 3938  df-in 3940  df-ss 3949  df-nul 4289  df-if 4464  df-sn 4558  df-pr 4560  df-op 4564  df-uni 4831  df-br 5058  df-opab 5120  df-mpt 5138  df-id 5453  df-xp 5554  df-rel 5555  df-cnv 5556  df-co 5557  df-dm 5558  df-rn 5559  df-iota 6307  df-fun 6350  df-fv 6356  df-1st 7678  df-vtx 26710  df-fusgr 27026
This theorem is referenced by:  fusgrfis  27039
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