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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 1110 | . . . . 5 ⊢ ((𝐺 ∈ UMGraph ∧ {𝐴, 𝐵} ∈ 𝐸 ∧ {𝐵, 𝐶} ∈ 𝐸) ↔ (𝐺 ∈ UMGraph ∧ ({𝐴, 𝐵} ∈ 𝐸 ∧ {𝐵, 𝐶} ∈ 𝐸))) | |
| 6 | 3, 4, 5 | sylanbrc 594 | . . . 4 ⊢ (𝜑 → (𝐺 ∈ UMGraph ∧ {𝐴, 𝐵} ∈ 𝐸 ∧ {𝐵, 𝐶} ∈ 𝐸)) |
| 7 | umgr2adedgwlk.e | . . . . 5 ⊢ 𝐸 = (Edg‘𝐺) | |
| 8 | 7 | umgr2adedgwlklem 30304 | . . . 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 18 | . . 3 ⊢ (𝜑 → ((𝐴 ≠ 𝐵 ∧ 𝐵 ≠ 𝐶) ∧ (𝐴 ∈ (Vtx‘𝐺) ∧ 𝐵 ∈ (Vtx‘𝐺) ∧ 𝐶 ∈ (Vtx‘𝐺)))) |
| 10 | 9 | simprd 500 | . 2 ⊢ (𝜑 → (𝐴 ∈ (Vtx‘𝐺) ∧ 𝐵 ∈ (Vtx‘𝐺) ∧ 𝐶 ∈ (Vtx‘𝐺))) |
| 11 | 9 | simpld 499 | . 2 ⊢ (𝜑 → (𝐴 ≠ 𝐵 ∧ 𝐵 ≠ 𝐶)) |
| 12 | ssid 3958 | . . . 4 ⊢ {𝐴, 𝐵} ⊆ {𝐴, 𝐵} | |
| 13 | umgr2adedgwlk.j | . . . 4 ⊢ (𝜑 → (𝐼‘𝐽) = {𝐴, 𝐵}) | |
| 14 | 12, 13 | sseqtrrid 3979 | . . 3 ⊢ (𝜑 → {𝐴, 𝐵} ⊆ (𝐼‘𝐽)) |
| 15 | ssid 3958 | . . . 4 ⊢ {𝐵, 𝐶} ⊆ {𝐵, 𝐶} | |
| 16 | umgr2adedgwlk.k | . . . 4 ⊢ (𝜑 → (𝐼‘𝐾) = {𝐵, 𝐶}) | |
| 17 | 15, 16 | sseqtrrid 3979 | . . 3 ⊢ (𝜑 → {𝐵, 𝐶} ⊆ (𝐼‘𝐾)) |
| 18 | 14, 17 | jca 520 | . 2 ⊢ (𝜑 → ({𝐴, 𝐵} ⊆ (𝐼‘𝐽) ∧ {𝐵, 𝐶} ⊆ (𝐼‘𝐾))) |
| 19 | eqid 2762 | . 2 ⊢ (Vtx‘𝐺) = (Vtx‘𝐺) | |
| 20 | umgr2adedgwlk.i | . 2 ⊢ 𝐼 = (iEdg‘𝐺) | |
| 21 | 1, 2, 10, 11, 18, 19, 20 | 2wlkond 30297 | 1 ⊢ (𝜑 → 𝐹(𝐴(WalksOn‘𝐺)𝐶)𝑃) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 400 ∧ w3a 1102 = wceq 1569 ∈ wcel 2142 ≠ wne 2957 ⊆ wss 3904 {cpr 4590 class class class wbr 5108 ‘cfv 6536 (class class class)co 7412 〈“cs2 14885 〈“cs3 14886 Vtxcvtx 29357 iEdgciedg 29358 Edgcedg 29408 UMGraphcumgr 29442 WalksOncwlkson 29958 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5237 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-ifp 1078 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4595 df-uni 4872 df-int 4912 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-1st 7984 df-2nd 7985 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-1o 8451 df-oadd 8455 df-er 8692 df-map 8824 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-dju 9894 df-card 9932 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11449 df-neg 11450 df-nn 12240 df-2 12309 df-3 12310 df-n0 12511 df-z 12598 df-uz 12869 df-fz 13542 df-fzo 13690 df-hash 14374 df-word 14558 df-concat 14615 df-s1 14641 df-s2 14892 df-s3 14893 df-edg 29409 df-umgr 29444 df-wlks 29960 df-wlkson 29961 |
| This theorem is used by: (None) |
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