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| Mirrors > Home > MPE Home > Th. List > uhgrspan1lem3 | Structured version Visualization version GIF version | ||
| Description: Lemma 3 for uhgrspan1 29634. (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 6886 | . 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 29631 | . . 3 ⊢ ((𝑉 ∖ {𝑁}) ∈ V ∧ (𝐼 ↾ 𝐹) ∈ V) |
| 7 | opiedgfv 29338 | . . 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 2786 | 1 ⊢ (iEdg‘𝑆) = (𝐼 ↾ 𝐹) |
| Colors of variables: wff setvar class |
| Syntax hints: ∧ wa 400 = wceq 1570 ∈ wcel 2143 ∉ wnel 3064 {crab 3416 Vcvv 3455 ∖ cdif 3903 {csn 4590 〈cop 4596 dom cdm 5663 ↾ cres 5665 ‘cfv 6538 Vtxcvtx 29327 iEdgciedg 29328 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5258 ax-nul 5270 ax-pr 5406 ax-un 7734 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4489 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-br 5111 df-opab 5175 df-mpt 5194 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-iota 6494 df-fun 6540 df-fv 6546 df-2nd 7988 df-iedg 29330 |
| This theorem is referenced by: uhgrspan1 29634 upgrres 29637 umgrres 29638 usgrres 29639 |
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