| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > trlsegvdeglem5 | Structured version Visualization version GIF version | ||
| Description: Lemma for trlsegvdeg 30314. (Contributed by AV, 21-Feb-2021.) |
| Ref | Expression |
|---|---|
| trlsegvdeg.v | ⊢ 𝑉 = (Vtx‘𝐺) |
| trlsegvdeg.i | ⊢ 𝐼 = (iEdg‘𝐺) |
| trlsegvdeg.f | ⊢ (𝜑 → Fun 𝐼) |
| trlsegvdeg.n | ⊢ (𝜑 → 𝑁 ∈ (0..^(♯‘𝐹))) |
| trlsegvdeg.u | ⊢ (𝜑 → 𝑈 ∈ 𝑉) |
| trlsegvdeg.w | ⊢ (𝜑 → 𝐹(Trails‘𝐺)𝑃) |
| trlsegvdeg.vx | ⊢ (𝜑 → (Vtx‘𝑋) = 𝑉) |
| trlsegvdeg.vy | ⊢ (𝜑 → (Vtx‘𝑌) = 𝑉) |
| trlsegvdeg.vz | ⊢ (𝜑 → (Vtx‘𝑍) = 𝑉) |
| trlsegvdeg.ix | ⊢ (𝜑 → (iEdg‘𝑋) = (𝐼 ↾ (𝐹 “ (0..^𝑁)))) |
| trlsegvdeg.iy | ⊢ (𝜑 → (iEdg‘𝑌) = {〈(𝐹‘𝑁), (𝐼‘(𝐹‘𝑁))〉}) |
| trlsegvdeg.iz | ⊢ (𝜑 → (iEdg‘𝑍) = (𝐼 ↾ (𝐹 “ (0...𝑁)))) |
| Ref | Expression |
|---|---|
| trlsegvdeglem5 | ⊢ (𝜑 → dom (iEdg‘𝑌) = {(𝐹‘𝑁)}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | trlsegvdeg.iy | . . 3 ⊢ (𝜑 → (iEdg‘𝑌) = {〈(𝐹‘𝑁), (𝐼‘(𝐹‘𝑁))〉}) | |
| 2 | 1 | dmeqd 5862 | . 2 ⊢ (𝜑 → dom (iEdg‘𝑌) = dom {〈(𝐹‘𝑁), (𝐼‘(𝐹‘𝑁))〉}) |
| 3 | fvex 6855 | . . 3 ⊢ (𝐼‘(𝐹‘𝑁)) ∈ V | |
| 4 | dmsnopg 6179 | . . 3 ⊢ ((𝐼‘(𝐹‘𝑁)) ∈ V → dom {〈(𝐹‘𝑁), (𝐼‘(𝐹‘𝑁))〉} = {(𝐹‘𝑁)}) | |
| 5 | 3, 4 | mp1i 13 | . 2 ⊢ (𝜑 → dom {〈(𝐹‘𝑁), (𝐼‘(𝐹‘𝑁))〉} = {(𝐹‘𝑁)}) |
| 6 | 2, 5 | eqtrd 2772 | 1 ⊢ (𝜑 → dom (iEdg‘𝑌) = {(𝐹‘𝑁)}) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 Vcvv 3442 {csn 4582 〈cop 4588 class class class wbr 5100 dom cdm 5632 ↾ cres 5634 “ cima 5635 Fun wfun 6494 ‘cfv 6500 (class class class)co 7368 0cc0 11038 ...cfz 13435 ..^cfzo 13582 ♯chash 14265 Vtxcvtx 29081 iEdgciedg 29082 Trailsctrls 29774 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-sep 5243 ax-nul 5253 ax-pr 5379 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-ne 2934 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-dm 5642 df-iota 6456 df-fv 6508 |
| This theorem is referenced by: trlsegvdeglem7 30313 trlsegvdeg 30314 |
| Copyright terms: Public domain | W3C validator |