MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  uhgrspan1lem1 Structured version   Visualization version   GIF version

Theorem uhgrspan1lem1 29369
Description: Lemma 1 for uhgrspan1 29372. (Contributed by AV, 19-Nov-2020.)
Hypotheses
Ref Expression
uhgrspan1.v 𝑉 = (Vtx‘𝐺)
uhgrspan1.i 𝐼 = (iEdg‘𝐺)
uhgrspan1.f 𝐹 = {𝑖 ∈ dom 𝐼𝑁 ∉ (𝐼𝑖)}
Assertion
Ref Expression
uhgrspan1lem1 ((𝑉 ∖ {𝑁}) ∈ V ∧ (𝐼𝐹) ∈ V)

Proof of Theorem uhgrspan1lem1
StepHypRef Expression
1 uhgrspan1.v . . . 4 𝑉 = (Vtx‘𝐺)
21fvexi 6854 . . 3 𝑉 ∈ V
32difexi 5271 . 2 (𝑉 ∖ {𝑁}) ∈ V
4 uhgrspan1.i . . . 4 𝐼 = (iEdg‘𝐺)
54fvexi 6854 . . 3 𝐼 ∈ V
65resex 5994 . 2 (𝐼𝐹) ∈ V
73, 6pm3.2i 470 1 ((𝑉 ∖ {𝑁}) ∈ V ∧ (𝐼𝐹) ∈ V)
Colors of variables: wff setvar class
Syntax hints:  wa 395   = wceq 1542  wcel 2114  wnel 3036  {crab 3389  Vcvv 3429  cdif 3886  {csn 4567  dom cdm 5631  cres 5633  cfv 6498  Vtxcvtx 29065  iEdgciedg 29066
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-ext 2708  ax-sep 5231  ax-nul 5241
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-sb 2069  df-clab 2715  df-cleq 2728  df-clel 2811  df-ne 2933  df-rab 3390  df-v 3431  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-sn 4568  df-pr 4570  df-uni 4851  df-res 5643  df-iota 6454  df-fv 6506
This theorem is referenced by:  uhgrspan1lem2  29370  uhgrspan1lem3  29371
  Copyright terms: Public domain W3C validator