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Mirrors > Home > MPE Home > Th. List > eupth2lem3lem1 | Structured version Visualization version GIF version |
Description: Lemma for eupth2lem3 28291. (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 |
---|---|
eupth2lem3lem1 | ⊢ (𝜑 → ((VtxDeg‘𝑋)‘𝑈) ∈ ℕ0) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | trlsegvdeg.u | . . . . 5 ⊢ (𝜑 → 𝑈 ∈ 𝑉) | |
2 | trlsegvdeg.vx | . . . . 5 ⊢ (𝜑 → (Vtx‘𝑋) = 𝑉) | |
3 | 1, 2 | eleqtrrd 2837 | . . . 4 ⊢ (𝜑 → 𝑈 ∈ (Vtx‘𝑋)) |
4 | 3 | elfvexd 6740 | . . 3 ⊢ (𝜑 → 𝑋 ∈ V) |
5 | trlsegvdeg.v | . . . 4 ⊢ 𝑉 = (Vtx‘𝐺) | |
6 | trlsegvdeg.i | . . . 4 ⊢ 𝐼 = (iEdg‘𝐺) | |
7 | trlsegvdeg.f | . . . 4 ⊢ (𝜑 → Fun 𝐼) | |
8 | trlsegvdeg.n | . . . 4 ⊢ (𝜑 → 𝑁 ∈ (0..^(♯‘𝐹))) | |
9 | trlsegvdeg.w | . . . 4 ⊢ (𝜑 → 𝐹(Trails‘𝐺)𝑃) | |
10 | trlsegvdeg.vy | . . . 4 ⊢ (𝜑 → (Vtx‘𝑌) = 𝑉) | |
11 | trlsegvdeg.vz | . . . 4 ⊢ (𝜑 → (Vtx‘𝑍) = 𝑉) | |
12 | trlsegvdeg.ix | . . . 4 ⊢ (𝜑 → (iEdg‘𝑋) = (𝐼 ↾ (𝐹 “ (0..^𝑁)))) | |
13 | trlsegvdeg.iy | . . . 4 ⊢ (𝜑 → (iEdg‘𝑌) = {〈(𝐹‘𝑁), (𝐼‘(𝐹‘𝑁))〉}) | |
14 | trlsegvdeg.iz | . . . 4 ⊢ (𝜑 → (iEdg‘𝑍) = (𝐼 ↾ (𝐹 “ (0...𝑁)))) | |
15 | 5, 6, 7, 8, 1, 9, 2, 10, 11, 12, 13, 14 | trlsegvdeglem6 28280 | . . 3 ⊢ (𝜑 → dom (iEdg‘𝑋) ∈ Fin) |
16 | eqid 2734 | . . . 4 ⊢ (Vtx‘𝑋) = (Vtx‘𝑋) | |
17 | eqid 2734 | . . . 4 ⊢ (iEdg‘𝑋) = (iEdg‘𝑋) | |
18 | eqid 2734 | . . . 4 ⊢ dom (iEdg‘𝑋) = dom (iEdg‘𝑋) | |
19 | 16, 17, 18 | vtxdgfisf 27536 | . . 3 ⊢ ((𝑋 ∈ V ∧ dom (iEdg‘𝑋) ∈ Fin) → (VtxDeg‘𝑋):(Vtx‘𝑋)⟶ℕ0) |
20 | 4, 15, 19 | syl2anc 587 | . 2 ⊢ (𝜑 → (VtxDeg‘𝑋):(Vtx‘𝑋)⟶ℕ0) |
21 | 20, 3 | ffvelrnd 6894 | 1 ⊢ (𝜑 → ((VtxDeg‘𝑋)‘𝑈) ∈ ℕ0) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1543 ∈ wcel 2110 Vcvv 3401 {csn 4531 〈cop 4537 class class class wbr 5043 dom cdm 5540 ↾ cres 5542 “ cima 5543 Fun wfun 6363 ⟶wf 6365 ‘cfv 6369 (class class class)co 7202 Fincfn 8615 0cc0 10712 ℕ0cn0 12073 ...cfz 13078 ..^cfzo 13221 ♯chash 13879 Vtxcvtx 27059 iEdgciedg 27060 VtxDegcvtxdg 27525 Trailsctrls 27750 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2706 ax-rep 5168 ax-sep 5181 ax-nul 5188 ax-pow 5247 ax-pr 5311 ax-un 7512 ax-cnex 10768 ax-resscn 10769 ax-1cn 10770 ax-icn 10771 ax-addcl 10772 ax-addrcl 10773 ax-mulcl 10774 ax-mulrcl 10775 ax-mulcom 10776 ax-addass 10777 ax-mulass 10778 ax-distr 10779 ax-i2m1 10780 ax-1ne0 10781 ax-1rid 10782 ax-rnegex 10783 ax-rrecex 10784 ax-cnre 10785 ax-pre-lttri 10786 ax-pre-lttrn 10787 ax-pre-ltadd 10788 ax-pre-mulgt0 10789 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-ifp 1064 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2537 df-eu 2566 df-clab 2713 df-cleq 2726 df-clel 2812 df-nfc 2882 df-ne 2936 df-nel 3040 df-ral 3059 df-rex 3060 df-reu 3061 df-rab 3063 df-v 3403 df-sbc 3688 df-csb 3803 df-dif 3860 df-un 3862 df-in 3864 df-ss 3874 df-pss 3876 df-nul 4228 df-if 4430 df-pw 4505 df-sn 4532 df-pr 4534 df-tp 4536 df-op 4538 df-uni 4810 df-int 4850 df-iun 4896 df-br 5044 df-opab 5106 df-mpt 5125 df-tr 5151 df-id 5444 df-eprel 5449 df-po 5457 df-so 5458 df-fr 5498 df-we 5500 df-xp 5546 df-rel 5547 df-cnv 5548 df-co 5549 df-dm 5550 df-rn 5551 df-res 5552 df-ima 5553 df-pred 6149 df-ord 6205 df-on 6206 df-lim 6207 df-suc 6208 df-iota 6327 df-fun 6371 df-fn 6372 df-f 6373 df-f1 6374 df-fo 6375 df-f1o 6376 df-fv 6377 df-riota 7159 df-ov 7205 df-oprab 7206 df-mpo 7207 df-om 7634 df-1st 7750 df-2nd 7751 df-wrecs 8036 df-recs 8097 df-rdg 8135 df-1o 8191 df-er 8380 df-map 8499 df-en 8616 df-dom 8617 df-sdom 8618 df-fin 8619 df-card 9538 df-pnf 10852 df-mnf 10853 df-xr 10854 df-ltxr 10855 df-le 10856 df-sub 11047 df-neg 11048 df-nn 11814 df-n0 12074 df-xnn0 12146 df-z 12160 df-uz 12422 df-xadd 12688 df-fz 13079 df-fzo 13222 df-hash 13880 df-word 14053 df-vtxdg 27526 df-wlks 27659 df-trls 27752 |
This theorem is referenced by: eupth2lem3lem3 28285 eupth2lem3lem4 28286 eupth2lem3lem6 28288 |
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