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| Mirrors > Home > MPE Home > Th. List > uhgrspan1lem1 | Structured version Visualization version GIF version | ||
| Description: Lemma 1 for uhgrspan1 29266. (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 6840 | . . 3 ⊢ 𝑉 ∈ V |
| 3 | 2 | difexi 5272 | . 2 ⊢ (𝑉 ∖ {𝑁}) ∈ V |
| 4 | uhgrspan1.i | . . . 4 ⊢ 𝐼 = (iEdg‘𝐺) | |
| 5 | 4 | fvexi 6840 | . . 3 ⊢ 𝐼 ∈ V |
| 6 | 5 | resex 5984 | . 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 3029 {crab 3396 Vcvv 3438 ∖ cdif 3902 {csn 4579 dom cdm 5623 ↾ cres 5625 ‘cfv 6486 Vtxcvtx 28959 iEdgciedg 28960 |
| 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 2701 ax-sep 5238 ax-nul 5248 |
| 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 2708 df-cleq 2721 df-clel 2803 df-ne 2926 df-rab 3397 df-v 3440 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-sn 4580 df-pr 4582 df-uni 4862 df-res 5635 df-iota 6442 df-fv 6494 |
| This theorem is referenced by: uhgrspan1lem2 29264 uhgrspan1lem3 29265 |
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