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Mirrors > Home > MPE Home > Th. List > eupth2lem3lem1 | Structured version Visualization version GIF version |
Description: Lemma for eupth2lem3 28600. (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 2842 | . . . 4 ⊢ (𝜑 → 𝑈 ∈ (Vtx‘𝑋)) |
4 | 3 | elfvexd 6808 | . . 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 28589 | . . 3 ⊢ (𝜑 → dom (iEdg‘𝑋) ∈ Fin) |
16 | eqid 2738 | . . . 4 ⊢ (Vtx‘𝑋) = (Vtx‘𝑋) | |
17 | eqid 2738 | . . . 4 ⊢ (iEdg‘𝑋) = (iEdg‘𝑋) | |
18 | eqid 2738 | . . . 4 ⊢ dom (iEdg‘𝑋) = dom (iEdg‘𝑋) | |
19 | 16, 17, 18 | vtxdgfisf 27843 | . . 3 ⊢ ((𝑋 ∈ V ∧ dom (iEdg‘𝑋) ∈ Fin) → (VtxDeg‘𝑋):(Vtx‘𝑋)⟶ℕ0) |
20 | 4, 15, 19 | syl2anc 584 | . 2 ⊢ (𝜑 → (VtxDeg‘𝑋):(Vtx‘𝑋)⟶ℕ0) |
21 | 20, 3 | ffvelrnd 6962 | 1 ⊢ (𝜑 → ((VtxDeg‘𝑋)‘𝑈) ∈ ℕ0) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1539 ∈ wcel 2106 Vcvv 3432 {csn 4561 〈cop 4567 class class class wbr 5074 dom cdm 5589 ↾ cres 5591 “ cima 5592 Fun wfun 6427 ⟶wf 6429 ‘cfv 6433 (class class class)co 7275 Fincfn 8733 0cc0 10871 ℕ0cn0 12233 ...cfz 13239 ..^cfzo 13382 ♯chash 14044 Vtxcvtx 27366 iEdgciedg 27367 VtxDegcvtxdg 27832 Trailsctrls 28058 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-ifp 1061 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-er 8498 df-map 8617 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-card 9697 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-nn 11974 df-n0 12234 df-xnn0 12306 df-z 12320 df-uz 12583 df-xadd 12849 df-fz 13240 df-fzo 13383 df-hash 14045 df-word 14218 df-vtxdg 27833 df-wlks 27966 df-trls 28060 |
This theorem is referenced by: eupth2lem3lem3 28594 eupth2lem3lem4 28595 eupth2lem3lem6 28597 |
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