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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 29920 | . . . 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 495 | . 2 ⊢ (𝜑 → (𝐴 ∈ (Vtx‘𝐺) ∧ 𝐵 ∈ (Vtx‘𝐺) ∧ 𝐶 ∈ (Vtx‘𝐺))) |
| 11 | 9 | simpld 494 | . 2 ⊢ (𝜑 → (𝐴 ≠ 𝐵 ∧ 𝐵 ≠ 𝐶)) |
| 12 | ssid 3957 | . . . 4 ⊢ {𝐴, 𝐵} ⊆ {𝐴, 𝐵} | |
| 13 | umgr2adedgwlk.j | . . . 4 ⊢ (𝜑 → (𝐼‘𝐽) = {𝐴, 𝐵}) | |
| 14 | 12, 13 | sseqtrrid 3978 | . . 3 ⊢ (𝜑 → {𝐴, 𝐵} ⊆ (𝐼‘𝐽)) |
| 15 | ssid 3957 | . . . 4 ⊢ {𝐵, 𝐶} ⊆ {𝐵, 𝐶} | |
| 16 | umgr2adedgwlk.k | . . . 4 ⊢ (𝜑 → (𝐼‘𝐾) = {𝐵, 𝐶}) | |
| 17 | 15, 16 | sseqtrrid 3978 | . . 3 ⊢ (𝜑 → {𝐵, 𝐶} ⊆ (𝐼‘𝐾)) |
| 18 | 14, 17 | jca 511 | . 2 ⊢ (𝜑 → ({𝐴, 𝐵} ⊆ (𝐼‘𝐽) ∧ {𝐵, 𝐶} ⊆ (𝐼‘𝐾))) |
| 19 | eqid 2731 | . 2 ⊢ (Vtx‘𝐺) = (Vtx‘𝐺) | |
| 20 | umgr2adedgwlk.i | . 2 ⊢ 𝐼 = (iEdg‘𝐺) | |
| 21 | 1, 2, 10, 11, 18, 19, 20 | 2wlkond 29913 | 1 ⊢ (𝜑 → 𝐹(𝐴(WalksOn‘𝐺)𝐶)𝑃) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1541 ∈ wcel 2111 ≠ wne 2928 ⊆ wss 3902 {cpr 4578 class class class wbr 5091 ‘cfv 6481 (class class class)co 7346 〈“cs2 14745 〈“cs3 14746 Vtxcvtx 28972 iEdgciedg 28973 Edgcedg 29023 UMGraphcumgr 29057 WalksOncwlkson 29574 |
| 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 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-rep 5217 ax-sep 5234 ax-nul 5244 ax-pow 5303 ax-pr 5370 ax-un 7668 ax-cnex 11059 ax-resscn 11060 ax-1cn 11061 ax-icn 11062 ax-addcl 11063 ax-addrcl 11064 ax-mulcl 11065 ax-mulrcl 11066 ax-mulcom 11067 ax-addass 11068 ax-mulass 11069 ax-distr 11070 ax-i2m1 11071 ax-1ne0 11072 ax-1rid 11073 ax-rnegex 11074 ax-rrecex 11075 ax-cnre 11076 ax-pre-lttri 11077 ax-pre-lttrn 11078 ax-pre-ltadd 11079 ax-pre-mulgt0 11080 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-ifp 1063 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4284 df-if 4476 df-pw 4552 df-sn 4577 df-pr 4579 df-tp 4581 df-op 4583 df-uni 4860 df-int 4898 df-iun 4943 df-br 5092 df-opab 5154 df-mpt 5173 df-tr 5199 df-id 5511 df-eprel 5516 df-po 5524 df-so 5525 df-fr 5569 df-we 5571 df-xp 5622 df-rel 5623 df-cnv 5624 df-co 5625 df-dm 5626 df-rn 5627 df-res 5628 df-ima 5629 df-pred 6248 df-ord 6309 df-on 6310 df-lim 6311 df-suc 6312 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-riota 7303 df-ov 7349 df-oprab 7350 df-mpo 7351 df-om 7797 df-1st 7921 df-2nd 7922 df-frecs 8211 df-wrecs 8242 df-recs 8291 df-rdg 8329 df-1o 8385 df-oadd 8389 df-er 8622 df-map 8752 df-en 8870 df-dom 8871 df-sdom 8872 df-fin 8873 df-dju 9791 df-card 9829 df-pnf 11145 df-mnf 11146 df-xr 11147 df-ltxr 11148 df-le 11149 df-sub 11343 df-neg 11344 df-nn 12123 df-2 12185 df-3 12186 df-n0 12379 df-z 12466 df-uz 12730 df-fz 13405 df-fzo 13552 df-hash 14235 df-word 14418 df-concat 14475 df-s1 14501 df-s2 14752 df-s3 14753 df-edg 29024 df-umgr 29059 df-wlks 29576 df-wlkson 29577 |
| This theorem is referenced by: (None) |
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