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Mirrors > Home > MPE Home > Th. List > uhgrspan1lem3 | Structured version Visualization version GIF version |
Description: Lemma 3 for uhgrspan1 28249. (Contributed by AV, 19-Nov-2020.) |
Ref | Expression |
---|---|
uhgrspan1.v | ⊢ 𝑉 = (Vtx‘𝐺) |
uhgrspan1.i | ⊢ 𝐼 = (iEdg‘𝐺) |
uhgrspan1.f | ⊢ 𝐹 = {𝑖 ∈ dom 𝐼 ∣ 𝑁 ∉ (𝐼‘𝑖)} |
uhgrspan1.s | ⊢ 𝑆 = 〈(𝑉 ∖ {𝑁}), (𝐼 ↾ 𝐹)〉 |
Ref | Expression |
---|---|
uhgrspan1lem3 | ⊢ (iEdg‘𝑆) = (𝐼 ↾ 𝐹) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | uhgrspan1.s | . . 3 ⊢ 𝑆 = 〈(𝑉 ∖ {𝑁}), (𝐼 ↾ 𝐹)〉 | |
2 | 1 | fveq2i 6845 | . 2 ⊢ (iEdg‘𝑆) = (iEdg‘〈(𝑉 ∖ {𝑁}), (𝐼 ↾ 𝐹)〉) |
3 | uhgrspan1.v | . . . 4 ⊢ 𝑉 = (Vtx‘𝐺) | |
4 | uhgrspan1.i | . . . 4 ⊢ 𝐼 = (iEdg‘𝐺) | |
5 | uhgrspan1.f | . . . 4 ⊢ 𝐹 = {𝑖 ∈ dom 𝐼 ∣ 𝑁 ∉ (𝐼‘𝑖)} | |
6 | 3, 4, 5 | uhgrspan1lem1 28246 | . . 3 ⊢ ((𝑉 ∖ {𝑁}) ∈ V ∧ (𝐼 ↾ 𝐹) ∈ V) |
7 | opiedgfv 27956 | . . 3 ⊢ (((𝑉 ∖ {𝑁}) ∈ V ∧ (𝐼 ↾ 𝐹) ∈ V) → (iEdg‘〈(𝑉 ∖ {𝑁}), (𝐼 ↾ 𝐹)〉) = (𝐼 ↾ 𝐹)) | |
8 | 6, 7 | ax-mp 5 | . 2 ⊢ (iEdg‘〈(𝑉 ∖ {𝑁}), (𝐼 ↾ 𝐹)〉) = (𝐼 ↾ 𝐹) |
9 | 2, 8 | eqtri 2764 | 1 ⊢ (iEdg‘𝑆) = (𝐼 ↾ 𝐹) |
Colors of variables: wff setvar class |
Syntax hints: ∧ wa 396 = wceq 1541 ∈ wcel 2106 ∉ wnel 3049 {crab 3407 Vcvv 3445 ∖ cdif 3907 {csn 4586 〈cop 4592 dom cdm 5633 ↾ cres 5635 ‘cfv 6496 Vtxcvtx 27945 iEdgciedg 27946 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2707 ax-sep 5256 ax-nul 5263 ax-pr 5384 ax-un 7671 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2889 df-ne 2944 df-ral 3065 df-rex 3074 df-rab 3408 df-v 3447 df-dif 3913 df-un 3915 df-in 3917 df-ss 3927 df-nul 4283 df-if 4487 df-sn 4587 df-pr 4589 df-op 4593 df-uni 4866 df-br 5106 df-opab 5168 df-mpt 5189 df-id 5531 df-xp 5639 df-rel 5640 df-cnv 5641 df-co 5642 df-dm 5643 df-rn 5644 df-res 5645 df-iota 6448 df-fun 6498 df-fv 6504 df-2nd 7921 df-iedg 27948 |
This theorem is referenced by: uhgrspan1 28249 upgrres 28252 umgrres 28253 usgrres 28254 |
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