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Mirrors > Home > MPE Home > Th. List > umgr2adedgwlkon | Structured version Visualization version GIF version |
Description: In a multigraph, two adjacent edges form a walk between two vertices. (Contributed by Alexander van der Vekens, 18-Feb-2018.) (Revised by AV, 30-Jan-2021.) |
Ref | Expression |
---|---|
umgr2adedgwlk.e | ⊢ 𝐸 = (Edg‘𝐺) |
umgr2adedgwlk.i | ⊢ 𝐼 = (iEdg‘𝐺) |
umgr2adedgwlk.f | ⊢ 𝐹 = 〈“𝐽𝐾”〉 |
umgr2adedgwlk.p | ⊢ 𝑃 = 〈“𝐴𝐵𝐶”〉 |
umgr2adedgwlk.g | ⊢ (𝜑 → 𝐺 ∈ UMGraph) |
umgr2adedgwlk.a | ⊢ (𝜑 → ({𝐴, 𝐵} ∈ 𝐸 ∧ {𝐵, 𝐶} ∈ 𝐸)) |
umgr2adedgwlk.j | ⊢ (𝜑 → (𝐼‘𝐽) = {𝐴, 𝐵}) |
umgr2adedgwlk.k | ⊢ (𝜑 → (𝐼‘𝐾) = {𝐵, 𝐶}) |
Ref | Expression |
---|---|
umgr2adedgwlkon | ⊢ (𝜑 → 𝐹(𝐴(WalksOn‘𝐺)𝐶)𝑃) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | umgr2adedgwlk.p | . 2 ⊢ 𝑃 = 〈“𝐴𝐵𝐶”〉 | |
2 | umgr2adedgwlk.f | . 2 ⊢ 𝐹 = 〈“𝐽𝐾”〉 | |
3 | umgr2adedgwlk.g | . . . . 5 ⊢ (𝜑 → 𝐺 ∈ UMGraph) | |
4 | umgr2adedgwlk.a | . . . . 5 ⊢ (𝜑 → ({𝐴, 𝐵} ∈ 𝐸 ∧ {𝐵, 𝐶} ∈ 𝐸)) | |
5 | 3anass 1094 | . . . . 5 ⊢ ((𝐺 ∈ UMGraph ∧ {𝐴, 𝐵} ∈ 𝐸 ∧ {𝐵, 𝐶} ∈ 𝐸) ↔ (𝐺 ∈ UMGraph ∧ ({𝐴, 𝐵} ∈ 𝐸 ∧ {𝐵, 𝐶} ∈ 𝐸))) | |
6 | 3, 4, 5 | sylanbrc 583 | . . . 4 ⊢ (𝜑 → (𝐺 ∈ UMGraph ∧ {𝐴, 𝐵} ∈ 𝐸 ∧ {𝐵, 𝐶} ∈ 𝐸)) |
7 | umgr2adedgwlk.e | . . . . 5 ⊢ 𝐸 = (Edg‘𝐺) | |
8 | 7 | umgr2adedgwlklem 28598 | . . . 4 ⊢ ((𝐺 ∈ UMGraph ∧ {𝐴, 𝐵} ∈ 𝐸 ∧ {𝐵, 𝐶} ∈ 𝐸) → ((𝐴 ≠ 𝐵 ∧ 𝐵 ≠ 𝐶) ∧ (𝐴 ∈ (Vtx‘𝐺) ∧ 𝐵 ∈ (Vtx‘𝐺) ∧ 𝐶 ∈ (Vtx‘𝐺)))) |
9 | 6, 8 | syl 17 | . . 3 ⊢ (𝜑 → ((𝐴 ≠ 𝐵 ∧ 𝐵 ≠ 𝐶) ∧ (𝐴 ∈ (Vtx‘𝐺) ∧ 𝐵 ∈ (Vtx‘𝐺) ∧ 𝐶 ∈ (Vtx‘𝐺)))) |
10 | 9 | simprd 496 | . 2 ⊢ (𝜑 → (𝐴 ∈ (Vtx‘𝐺) ∧ 𝐵 ∈ (Vtx‘𝐺) ∧ 𝐶 ∈ (Vtx‘𝐺))) |
11 | 9 | simpld 495 | . 2 ⊢ (𝜑 → (𝐴 ≠ 𝐵 ∧ 𝐵 ≠ 𝐶)) |
12 | ssid 3954 | . . . 4 ⊢ {𝐴, 𝐵} ⊆ {𝐴, 𝐵} | |
13 | umgr2adedgwlk.j | . . . 4 ⊢ (𝜑 → (𝐼‘𝐽) = {𝐴, 𝐵}) | |
14 | 12, 13 | sseqtrrid 3985 | . . 3 ⊢ (𝜑 → {𝐴, 𝐵} ⊆ (𝐼‘𝐽)) |
15 | ssid 3954 | . . . 4 ⊢ {𝐵, 𝐶} ⊆ {𝐵, 𝐶} | |
16 | umgr2adedgwlk.k | . . . 4 ⊢ (𝜑 → (𝐼‘𝐾) = {𝐵, 𝐶}) | |
17 | 15, 16 | sseqtrrid 3985 | . . 3 ⊢ (𝜑 → {𝐵, 𝐶} ⊆ (𝐼‘𝐾)) |
18 | 14, 17 | jca 512 | . 2 ⊢ (𝜑 → ({𝐴, 𝐵} ⊆ (𝐼‘𝐽) ∧ {𝐵, 𝐶} ⊆ (𝐼‘𝐾))) |
19 | eqid 2736 | . 2 ⊢ (Vtx‘𝐺) = (Vtx‘𝐺) | |
20 | umgr2adedgwlk.i | . 2 ⊢ 𝐼 = (iEdg‘𝐺) | |
21 | 1, 2, 10, 11, 18, 19, 20 | 2wlkond 28591 | 1 ⊢ (𝜑 → 𝐹(𝐴(WalksOn‘𝐺)𝐶)𝑃) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1086 = wceq 1540 ∈ wcel 2105 ≠ wne 2940 ⊆ wss 3898 {cpr 4576 class class class wbr 5093 ‘cfv 6480 (class class class)co 7338 〈“cs2 14654 〈“cs3 14655 Vtxcvtx 27656 iEdgciedg 27657 Edgcedg 27707 UMGraphcumgr 27741 WalksOncwlkson 28254 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2707 ax-rep 5230 ax-sep 5244 ax-nul 5251 ax-pow 5309 ax-pr 5373 ax-un 7651 ax-cnex 11029 ax-resscn 11030 ax-1cn 11031 ax-icn 11032 ax-addcl 11033 ax-addrcl 11034 ax-mulcl 11035 ax-mulrcl 11036 ax-mulcom 11037 ax-addass 11038 ax-mulass 11039 ax-distr 11040 ax-i2m1 11041 ax-1ne0 11042 ax-1rid 11043 ax-rnegex 11044 ax-rrecex 11045 ax-cnre 11046 ax-pre-lttri 11047 ax-pre-lttrn 11048 ax-pre-ltadd 11049 ax-pre-mulgt0 11050 |
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 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-reu 3350 df-rab 3404 df-v 3443 df-sbc 3728 df-csb 3844 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3917 df-nul 4271 df-if 4475 df-pw 4550 df-sn 4575 df-pr 4577 df-tp 4579 df-op 4581 df-uni 4854 df-int 4896 df-iun 4944 df-br 5094 df-opab 5156 df-mpt 5177 df-tr 5211 df-id 5519 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5576 df-we 5578 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6239 df-ord 6306 df-on 6307 df-lim 6308 df-suc 6309 df-iota 6432 df-fun 6482 df-fn 6483 df-f 6484 df-f1 6485 df-fo 6486 df-f1o 6487 df-fv 6488 df-riota 7294 df-ov 7341 df-oprab 7342 df-mpo 7343 df-om 7782 df-1st 7900 df-2nd 7901 df-frecs 8168 df-wrecs 8199 df-recs 8273 df-rdg 8312 df-1o 8368 df-oadd 8372 df-er 8570 df-map 8689 df-en 8806 df-dom 8807 df-sdom 8808 df-fin 8809 df-dju 9759 df-card 9797 df-pnf 11113 df-mnf 11114 df-xr 11115 df-ltxr 11116 df-le 11117 df-sub 11309 df-neg 11310 df-nn 12076 df-2 12138 df-3 12139 df-n0 12336 df-z 12422 df-uz 12685 df-fz 13342 df-fzo 13485 df-hash 14147 df-word 14319 df-concat 14375 df-s1 14401 df-s2 14661 df-s3 14662 df-edg 27708 df-umgr 27743 df-wlks 28256 df-wlkson 28257 |
This theorem is referenced by: (None) |
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