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| Mirrors > Home > MPE Home > Th. List > upgreupthseg | Structured version Visualization version GIF version | ||
| Description: The 𝑁-th edge in an eulerian path is the edge from 𝑃(𝑁) to 𝑃(𝑁 + 1). (Contributed by Mario Carneiro, 12-Mar-2015.) (Revised by AV, 18-Feb-2021.) |
| Ref | Expression |
|---|---|
| upgreupthseg.i | ⊢ 𝐼 = (iEdg‘𝐺) |
| Ref | Expression |
|---|---|
| upgreupthseg | ⊢ ((𝐺 ∈ UPGraph ∧ 𝐹(EulerPaths‘𝐺)𝑃 ∧ 𝑁 ∈ (0..^(♯‘𝐹))) → (𝐼‘(𝐹‘𝑁)) = {(𝑃‘𝑁), (𝑃‘(𝑁 + 1))}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | upgreupthseg.i | . . . 4 ⊢ 𝐼 = (iEdg‘𝐺) | |
| 2 | eqid 2763 | . . . 4 ⊢ (Vtx‘𝐺) = (Vtx‘𝐺) | |
| 3 | 1, 2 | upgreupthi 30866 | . . 3 ⊢ ((𝐺 ∈ UPGraph ∧ 𝐹(EulerPaths‘𝐺)𝑃) → (𝐹:(0..^(♯‘𝐹))⟶1-1ontodom 𝐼 ∧ 𝑃:(0...(♯‘𝐹))⟶(Vtx‘𝐺) ∧ ∀𝑛 ∈ (0..^(♯‘𝐹))(𝐼‘(𝐹‘𝑛)) = {(𝑃‘𝑛), (𝑃‘(𝑛 + 1))})) |
| 4 | 2fveq3 6921 | . . . . . 6 ⊢ (𝑛 = 𝑁 → (𝐼‘(𝐹‘𝑛)) = (𝐼‘(𝐹‘𝑁))) | |
| 5 | fveq2 6916 | . . . . . . 7 ⊢ (𝑛 = 𝑁 → (𝑃‘𝑛) = (𝑃‘𝑁)) | |
| 6 | fvoveq1 7474 | . . . . . . 7 ⊢ (𝑛 = 𝑁 → (𝑃‘(𝑛 + 1)) = (𝑃‘(𝑁 + 1))) | |
| 7 | 5, 6 | preq12d 4704 | . . . . . 6 ⊢ (𝑛 = 𝑁 → {(𝑃‘𝑛), (𝑃‘(𝑛 + 1))} = {(𝑃‘𝑁), (𝑃‘(𝑁 + 1))}) |
| 8 | 4, 7 | eqeq12d 2779 | . . . . 5 ⊢ (𝑛 = 𝑁 → ((𝐼‘(𝐹‘𝑛)) = {(𝑃‘𝑛), (𝑃‘(𝑛 + 1))} ↔ (𝐼‘(𝐹‘𝑁)) = {(𝑃‘𝑁), (𝑃‘(𝑁 + 1))})) |
| 9 | 8 | rspccv 3577 | . . . 4 ⊢ (∀𝑛 ∈ (0..^(♯‘𝐹))(𝐼‘(𝐹‘𝑛)) = {(𝑃‘𝑛), (𝑃‘(𝑛 + 1))} → (𝑁 ∈ (0..^(♯‘𝐹)) → (𝐼‘(𝐹‘𝑁)) = {(𝑃‘𝑁), (𝑃‘(𝑁 + 1))})) |
| 10 | 9 | 3ad2ant3 1153 | . . 3 ⊢ ((𝐹:(0..^(♯‘𝐹))⟶1-1ontodom 𝐼 ∧ 𝑃:(0...(♯‘𝐹))⟶(Vtx‘𝐺) ∧ ∀𝑛 ∈ (0..^(♯‘𝐹))(𝐼‘(𝐹‘𝑛)) = {(𝑃‘𝑛), (𝑃‘(𝑛 + 1))}) → (𝑁 ∈ (0..^(♯‘𝐹)) → (𝐼‘(𝐹‘𝑁)) = {(𝑃‘𝑁), (𝑃‘(𝑁 + 1))})) |
| 11 | 3, 10 | syl 18 | . 2 ⊢ ((𝐺 ∈ UPGraph ∧ 𝐹(EulerPaths‘𝐺)𝑃) → (𝑁 ∈ (0..^(♯‘𝐹)) → (𝐼‘(𝐹‘𝑁)) = {(𝑃‘𝑁), (𝑃‘(𝑁 + 1))})) |
| 12 | 11 | 3impia 1135 | 1 ⊢ ((𝐺 ∈ UPGraph ∧ 𝐹(EulerPaths‘𝐺)𝑃 ∧ 𝑁 ∈ (0..^(♯‘𝐹))) → (𝐼‘(𝐹‘𝑁)) = {(𝑃‘𝑁), (𝑃‘(𝑁 + 1))}) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2147 ∀wral 3080 {cpr 4590 class class class wbr 5108 dom cdm 5658 ⟶wf 6562 ⟶1-1ontowf1o 6565 ‘cfv 6566 (class class class)co 7451 0cc0 11239 1c1 11240 + caddc 11242 ...cfz 13679 ..^cfzo 13828 ♯chash 14515 Vtxcvtx 29631 iEdgciedg 29632 UPGraphcupgr 29715 EulerPathsceupth 30855 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5238 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-cnex 11295 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-ifp 1079 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-int 4913 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-om 7912 df-1st 8035 df-2nd 8036 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-1o 8514 df-2o 8515 df-oadd 8518 df-er 8755 df-map 8887 df-pm 8888 df-en 9012 df-dom 9013 df-sdom 9014 df-fin 9015 df-dju 10019 df-card 10057 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-nn 12376 df-2 12445 df-n0 12647 df-xnn0 12720 df-z 12734 df-uz 13006 df-fz 13680 df-fzo 13829 df-hash 14516 df-word 14700 df-edg 29683 df-uhgr 29693 df-upgr 29717 df-wlks 30237 df-trls 30332 df-eupth 30856 |
| This theorem is used by: (None) |
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