| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > 1vgrex | Structured version Visualization version GIF version | ||
| Description: A graph with at least one vertex is a set. (Contributed by AV, 2-Mar-2021.) |
| Ref | Expression |
|---|---|
| 1vgrex.v | ⊢ 𝑉 = (Vtx‘𝐺) |
| Ref | Expression |
|---|---|
| 1vgrex | ⊢ (𝑁 ∈ 𝑉 → 𝐺 ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elfvex 6923 | . 2 ⊢ (𝑁 ∈ (Vtx‘𝐺) → 𝐺 ∈ V) | |
| 2 | 1vgrex.v | . 2 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 3 | 1, 2 | eleq2s 2884 | 1 ⊢ (𝑁 ∈ 𝑉 → 𝐺 ∈ V) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2146 Vcvv 3458 ‘cfv 6543 Vtxcvtx 29383 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-ext 2738 ax-nul 5274 ax-pr 5409 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-ne 2962 df-rab 3420 df-v 3460 df-dif 3911 df-un 3913 df-ss 3925 df-nul 4290 df-if 4493 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-br 5115 df-dm 5676 df-iota 6499 df-fv 6551 |
| This theorem is used by: upgr1e 29500 uspgr1e 29631 nbgrval 29723 cplgr1vlem 29816 vtxdgval 29855 vtxdgelxnn0 29859 wlkson 30041 trlsonfval 30090 pthsonfval 30126 spthson 30127 2wlkd 30322 is0wlk 30505 0wlkon 30508 is0trl 30511 0trlon 30512 0pthon 30515 0clwlkv 30519 1wlkd 30529 3wlkd 30558 wlkl0 30755 clnbgrval 48628 isgrtri 48749 |
| Copyright terms: Public domain | W3C validator |