MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  uhgrspan1lem2 Structured version   Visualization version   GIF version

Theorem uhgrspan1lem2 29370
Description: Lemma 2 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)}
uhgrspan1.s 𝑆 = ⟨(𝑉 ∖ {𝑁}), (𝐼𝐹)⟩
Assertion
Ref Expression
uhgrspan1lem2 (Vtx‘𝑆) = (𝑉 ∖ {𝑁})

Proof of Theorem uhgrspan1lem2
StepHypRef Expression
1 uhgrspan1.s . . 3 𝑆 = ⟨(𝑉 ∖ {𝑁}), (𝐼𝐹)⟩
21fveq2i 6843 . 2 (Vtx‘𝑆) = (Vtx‘⟨(𝑉 ∖ {𝑁}), (𝐼𝐹)⟩)
3 uhgrspan1.v . . . 4 𝑉 = (Vtx‘𝐺)
4 uhgrspan1.i . . . 4 𝐼 = (iEdg‘𝐺)
5 uhgrspan1.f . . . 4 𝐹 = {𝑖 ∈ dom 𝐼𝑁 ∉ (𝐼𝑖)}
63, 4, 5uhgrspan1lem1 29369 . . 3 ((𝑉 ∖ {𝑁}) ∈ V ∧ (𝐼𝐹) ∈ V)
7 opvtxfv 29073 . . 3 (((𝑉 ∖ {𝑁}) ∈ V ∧ (𝐼𝐹) ∈ V) → (Vtx‘⟨(𝑉 ∖ {𝑁}), (𝐼𝐹)⟩) = (𝑉 ∖ {𝑁}))
86, 7ax-mp 5 . 2 (Vtx‘⟨(𝑉 ∖ {𝑁}), (𝐼𝐹)⟩) = (𝑉 ∖ {𝑁})
92, 8eqtri 2759 1 (Vtx‘𝑆) = (𝑉 ∖ {𝑁})
Colors of variables: wff setvar class
Syntax hints:  wa 395   = wceq 1542  wcel 2114  wnel 3036  {crab 3389  Vcvv 3429  cdif 3886  {csn 4567  cop 4573  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-10 2147  ax-11 2163  ax-12 2185  ax-ext 2708  ax-sep 5231  ax-nul 5241  ax-pr 5375  ax-un 7689
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-nf 1786  df-sb 2069  df-mo 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3062  df-rab 3390  df-v 3431  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-if 4467  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4851  df-br 5086  df-opab 5148  df-mpt 5167  df-id 5526  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643  df-iota 6454  df-fun 6500  df-fv 6506  df-1st 7942  df-vtx 29067
This theorem is referenced by:  uhgrspan1  29372  upgrres  29375  umgrres  29376  usgrres  29377
  Copyright terms: Public domain W3C validator