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| Mirrors > Home > MPE Home > Th. List > uhgrspan1lem1 | Structured version Visualization version GIF version | ||
| Description: Lemma 1 for uhgrspan1 29237. (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)} |
| Ref | Expression |
|---|---|
| uhgrspan1lem1 | ⊢ ((𝑉 ∖ {𝑁}) ∈ V ∧ (𝐼 ↾ 𝐹) ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | uhgrspan1.v | . . . 4 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 2 | 1 | fvexi 6875 | . . 3 ⊢ 𝑉 ∈ V |
| 3 | 2 | difexi 5288 | . 2 ⊢ (𝑉 ∖ {𝑁}) ∈ V |
| 4 | uhgrspan1.i | . . . 4 ⊢ 𝐼 = (iEdg‘𝐺) | |
| 5 | 4 | fvexi 6875 | . . 3 ⊢ 𝐼 ∈ V |
| 6 | 5 | resex 6003 | . 2 ⊢ (𝐼 ↾ 𝐹) ∈ V |
| 7 | 3, 6 | pm3.2i 470 | 1 ⊢ ((𝑉 ∖ {𝑁}) ∈ V ∧ (𝐼 ↾ 𝐹) ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: ∧ wa 395 = wceq 1540 ∈ wcel 2109 ∉ wnel 3030 {crab 3408 Vcvv 3450 ∖ cdif 3914 {csn 4592 dom cdm 5641 ↾ cres 5643 ‘cfv 6514 Vtxcvtx 28930 iEdgciedg 28931 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-ext 2702 ax-sep 5254 ax-nul 5264 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-sb 2066 df-clab 2709 df-cleq 2722 df-clel 2804 df-ne 2927 df-rab 3409 df-v 3452 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-nul 4300 df-sn 4593 df-pr 4595 df-uni 4875 df-res 5653 df-iota 6467 df-fv 6522 |
| This theorem is referenced by: uhgrspan1lem2 29235 uhgrspan1lem3 29236 |
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