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| Mirrors > Home > MPE Home > Th. List > uhgrspan1lem3 | Structured version Visualization version GIF version | ||
| Description: Lemma 3 for uhgrspan1 29279. (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 6825 | . 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 29276 | . . 3 ⊢ ((𝑉 ∖ {𝑁}) ∈ V ∧ (𝐼 ↾ 𝐹) ∈ V) |
| 7 | opiedgfv 28983 | . . 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 2754 | 1 ⊢ (iEdg‘𝑆) = (𝐼 ↾ 𝐹) |
| Colors of variables: wff setvar class |
| Syntax hints: ∧ wa 395 = wceq 1541 ∈ wcel 2111 ∉ wnel 3032 {crab 3395 Vcvv 3436 ∖ cdif 3899 {csn 4576 〈cop 4582 dom cdm 5616 ↾ cres 5618 ‘cfv 6481 Vtxcvtx 28972 iEdgciedg 28973 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-sep 5234 ax-nul 5244 ax-pr 5370 ax-un 7668 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-ral 3048 df-rex 3057 df-rab 3396 df-v 3438 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4476 df-sn 4577 df-pr 4579 df-op 4583 df-uni 4860 df-br 5092 df-opab 5154 df-mpt 5173 df-id 5511 df-xp 5622 df-rel 5623 df-cnv 5624 df-co 5625 df-dm 5626 df-rn 5627 df-res 5628 df-iota 6437 df-fun 6483 df-fv 6489 df-2nd 7922 df-iedg 28975 |
| This theorem is referenced by: uhgrspan1 29279 upgrres 29282 umgrres 29283 usgrres 29284 |
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