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| Mirrors > Home > MPE Home > Th. List > umgr2v2evtxel | Structured version Visualization version GIF version | ||
| Description: A vertex in a multigraph with two edges connecting the same two vertices. (Contributed by AV, 17-Dec-2020.) |
| Ref | Expression |
|---|---|
| umgr2v2evtx.g | ⊢ 𝐺 = 〈𝑉, {〈0, {𝐴, 𝐵}〉, 〈1, {𝐴, 𝐵}〉}〉 |
| Ref | Expression |
|---|---|
| umgr2v2evtxel | ⊢ ((𝑉 ∈ 𝑊 ∧ 𝐴 ∈ 𝑉) → 𝐴 ∈ (Vtx‘𝐺)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | umgr2v2evtx.g | . . 3 ⊢ 𝐺 = 〈𝑉, {〈0, {𝐴, 𝐵}〉, 〈1, {𝐴, 𝐵}〉}〉 | |
| 2 | 1 | umgr2v2evtx 29498 | . 2 ⊢ (𝑉 ∈ 𝑊 → (Vtx‘𝐺) = 𝑉) |
| 3 | eqcom 2738 | . . . . 5 ⊢ ((Vtx‘𝐺) = 𝑉 ↔ 𝑉 = (Vtx‘𝐺)) | |
| 4 | 3 | biimpi 216 | . . . 4 ⊢ ((Vtx‘𝐺) = 𝑉 → 𝑉 = (Vtx‘𝐺)) |
| 5 | 4 | eleq2d 2817 | . . 3 ⊢ ((Vtx‘𝐺) = 𝑉 → (𝐴 ∈ 𝑉 ↔ 𝐴 ∈ (Vtx‘𝐺))) |
| 6 | 5 | biimpcd 249 | . 2 ⊢ (𝐴 ∈ 𝑉 → ((Vtx‘𝐺) = 𝑉 → 𝐴 ∈ (Vtx‘𝐺))) |
| 7 | 2, 6 | mpan9 506 | 1 ⊢ ((𝑉 ∈ 𝑊 ∧ 𝐴 ∈ 𝑉) → 𝐴 ∈ (Vtx‘𝐺)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2111 {cpr 4578 〈cop 4582 ‘cfv 6481 0cc0 11003 1c1 11004 Vtxcvtx 28972 |
| 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-iota 6437 df-fun 6483 df-fv 6489 df-1st 7921 df-vtx 28974 |
| This theorem is referenced by: umgr2v2enb1 29503 umgr2v2evd2 29504 |
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