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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 2766 | . . . 4 ⊢ (Vtx‘𝐺) = (Vtx‘𝐺) | |
| 3 | 1, 2 | upgreupthi 30596 | . . 3 ⊢ ((𝐺 ∈ UPGraph ∧ 𝐹(EulerPaths‘𝐺)𝑃) → (𝐹:(0..^(♯‘𝐹))–1-1-onto→dom 𝐼 ∧ 𝑃:(0...(♯‘𝐹))⟶(Vtx‘𝐺) ∧ ∀𝑛 ∈ (0..^(♯‘𝐹))(𝐼‘(𝐹‘𝑛)) = {(𝑃‘𝑛), (𝑃‘(𝑛 + 1))})) |
| 4 | 2fveq3 6893 | . . . . . 6 ⊢ (𝑛 = 𝑁 → (𝐼‘(𝐹‘𝑛)) = (𝐼‘(𝐹‘𝑁))) | |
| 5 | fveq2 6888 | . . . . . . 7 ⊢ (𝑛 = 𝑁 → (𝑃‘𝑛) = (𝑃‘𝑁)) | |
| 6 | fvoveq1 7446 | . . . . . . 7 ⊢ (𝑛 = 𝑁 → (𝑃‘(𝑛 + 1)) = (𝑃‘(𝑁 + 1))) | |
| 7 | 5, 6 | preq12d 4712 | . . . . . 6 ⊢ (𝑛 = 𝑁 → {(𝑃‘𝑛), (𝑃‘(𝑛 + 1))} = {(𝑃‘𝑁), (𝑃‘(𝑁 + 1))}) |
| 8 | 4, 7 | eqeq12d 2782 | . . . . 5 ⊢ (𝑛 = 𝑁 → ((𝐼‘(𝐹‘𝑛)) = {(𝑃‘𝑛), (𝑃‘(𝑛 + 1))} ↔ (𝐼‘(𝐹‘𝑁)) = {(𝑃‘𝑁), (𝑃‘(𝑁 + 1))})) |
| 9 | 8 | rspccv 3581 | . . . 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))–1-1-onto→dom 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 2146 ∀wral 3082 {cpr 4596 class class class wbr 5114 dom cdm 5666 ⟶wf 6539 –1-1-onto→wf1o 6542 ‘cfv 6543 (class class class)co 7423 0cc0 11118 1c1 11119 + caddc 11121 ...cfz 13553 ..^cfzo 13701 ♯chash 14386 Vtxcvtx 29383 iEdgciedg 29384 UPGraphcupgr 29467 EulerPathsceupth 30585 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-rep 5243 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-cnex 11174 ax-resscn 11175 ax-1cn 11176 ax-icn 11177 ax-addcl 11178 ax-addrcl 11179 ax-mulcl 11180 ax-mulrcl 11181 ax-mulcom 11182 ax-addass 11183 ax-mulass 11184 ax-distr 11185 ax-i2m1 11186 ax-1ne0 11187 ax-1rid 11188 ax-rnegex 11189 ax-rrecex 11190 ax-cnre 11191 ax-pre-lttri 11192 ax-pre-lttrn 11193 ax-pre-ltadd 11194 ax-pre-mulgt0 11195 |
| 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 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-int 4918 df-iun 4963 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5561 df-eprel 5566 df-po 5574 df-so 5575 df-fr 5619 df-we 5621 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6309 df-ord 6370 df-on 6371 df-lim 6372 df-suc 6373 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7380 df-ov 7426 df-oprab 7427 df-mpo 7428 df-om 7872 df-1st 7995 df-2nd 7996 df-frecs 8287 df-wrecs 8318 df-recs 8367 df-rdg 8406 df-1o 8462 df-2o 8463 df-oadd 8466 df-er 8703 df-map 8835 df-pm 8836 df-en 8953 df-dom 8954 df-sdom 8955 df-fin 8956 df-dju 9906 df-card 9944 df-pnf 11263 df-mnf 11264 df-xr 11265 df-ltxr 11266 df-le 11267 df-sub 11461 df-neg 11462 df-nn 12252 df-2 12321 df-n0 12523 df-xnn0 12596 df-z 12610 df-uz 12881 df-fz 13554 df-fzo 13702 df-hash 14387 df-word 14571 df-edg 29435 df-uhgr 29445 df-upgr 29469 df-wlks 29986 df-trls 30077 df-eupth 30586 |
| This theorem is used by: (None) |
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