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| Mirrors > Home > MPE Home > Th. List > 3wlkd | Structured version Visualization version GIF version | ||
| Description: Construction of a walk from two given edges in a graph. (Contributed by AV, 7-Feb-2021.) (Revised by AV, 24-Mar-2021.) |
| Ref | Expression |
|---|---|
| 3wlkd.p | ⊢ 𝑃 = 〈“𝐴𝐵𝐶𝐷”〉 |
| 3wlkd.f | ⊢ 𝐹 = 〈“𝐽𝐾𝐿”〉 |
| 3wlkd.s | ⊢ (𝜑 → ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑉) ∧ (𝐶 ∈ 𝑉 ∧ 𝐷 ∈ 𝑉))) |
| 3wlkd.n | ⊢ (𝜑 → ((𝐴 ≠ 𝐵 ∧ 𝐴 ≠ 𝐶) ∧ (𝐵 ≠ 𝐶 ∧ 𝐵 ≠ 𝐷) ∧ 𝐶 ≠ 𝐷)) |
| 3wlkd.e | ⊢ (𝜑 → ({𝐴, 𝐵} ⊆ (𝐼‘𝐽) ∧ {𝐵, 𝐶} ⊆ (𝐼‘𝐾) ∧ {𝐶, 𝐷} ⊆ (𝐼‘𝐿))) |
| 3wlkd.v | ⊢ 𝑉 = (Vtx‘𝐺) |
| 3wlkd.i | ⊢ 𝐼 = (iEdg‘𝐺) |
| Ref | Expression |
|---|---|
| 3wlkd | ⊢ (𝜑 → 𝐹(Walks‘𝐺)𝑃) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3wlkd.p | . . . 4 ⊢ 𝑃 = 〈“𝐴𝐵𝐶𝐷”〉 | |
| 2 | s4cli 14817 | . . . 4 ⊢ 〈“𝐴𝐵𝐶𝐷”〉 ∈ Word V | |
| 3 | 1, 2 | eqeltri 2833 | . . 3 ⊢ 𝑃 ∈ Word V |
| 4 | 3 | a1i 11 | . 2 ⊢ (𝜑 → 𝑃 ∈ Word V) |
| 5 | 3wlkd.f | . . . 4 ⊢ 𝐹 = 〈“𝐽𝐾𝐿”〉 | |
| 6 | s3cli 14816 | . . . 4 ⊢ 〈“𝐽𝐾𝐿”〉 ∈ Word V | |
| 7 | 5, 6 | eqeltri 2833 | . . 3 ⊢ 𝐹 ∈ Word V |
| 8 | 7 | a1i 11 | . 2 ⊢ (𝜑 → 𝐹 ∈ Word V) |
| 9 | 1, 5 | 3wlkdlem1 30246 | . . 3 ⊢ (♯‘𝑃) = ((♯‘𝐹) + 1) |
| 10 | 9 | a1i 11 | . 2 ⊢ (𝜑 → (♯‘𝑃) = ((♯‘𝐹) + 1)) |
| 11 | 3wlkd.s | . . 3 ⊢ (𝜑 → ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑉) ∧ (𝐶 ∈ 𝑉 ∧ 𝐷 ∈ 𝑉))) | |
| 12 | 3wlkd.n | . . 3 ⊢ (𝜑 → ((𝐴 ≠ 𝐵 ∧ 𝐴 ≠ 𝐶) ∧ (𝐵 ≠ 𝐶 ∧ 𝐵 ≠ 𝐷) ∧ 𝐶 ≠ 𝐷)) | |
| 13 | 3wlkd.e | . . 3 ⊢ (𝜑 → ({𝐴, 𝐵} ⊆ (𝐼‘𝐽) ∧ {𝐵, 𝐶} ⊆ (𝐼‘𝐾) ∧ {𝐶, 𝐷} ⊆ (𝐼‘𝐿))) | |
| 14 | 1, 5, 11, 12, 13 | 3wlkdlem10 30256 | . 2 ⊢ (𝜑 → ∀𝑘 ∈ (0..^(♯‘𝐹)){(𝑃‘𝑘), (𝑃‘(𝑘 + 1))} ⊆ (𝐼‘(𝐹‘𝑘))) |
| 15 | 1, 5, 11, 12 | 3wlkdlem5 30250 | . 2 ⊢ (𝜑 → ∀𝑘 ∈ (0..^(♯‘𝐹))(𝑃‘𝑘) ≠ (𝑃‘(𝑘 + 1))) |
| 16 | 3wlkd.v | . . . . 5 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 17 | 16 | 1vgrex 29087 | . . . 4 ⊢ (𝐴 ∈ 𝑉 → 𝐺 ∈ V) |
| 18 | 17 | ad2antrr 727 | . . 3 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑉) ∧ (𝐶 ∈ 𝑉 ∧ 𝐷 ∈ 𝑉)) → 𝐺 ∈ V) |
| 19 | 11, 18 | syl 17 | . 2 ⊢ (𝜑 → 𝐺 ∈ V) |
| 20 | 3wlkd.i | . 2 ⊢ 𝐼 = (iEdg‘𝐺) | |
| 21 | 1, 5, 11 | 3wlkdlem4 30249 | . 2 ⊢ (𝜑 → ∀𝑘 ∈ (0...(♯‘𝐹))(𝑃‘𝑘) ∈ 𝑉) |
| 22 | 4, 8, 10, 14, 15, 19, 16, 20, 21 | wlkd 29770 | 1 ⊢ (𝜑 → 𝐹(Walks‘𝐺)𝑃) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 ≠ wne 2933 Vcvv 3442 ⊆ wss 3903 {cpr 4584 class class class wbr 5100 ‘cfv 6500 (class class class)co 7368 1c1 11039 + caddc 11041 ♯chash 14265 Word cword 14448 〈“cs3 14777 〈“cs4 14778 Vtxcvtx 29081 iEdgciedg 29082 Walkscwlks 29682 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5226 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-ifp 1064 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-tp 4587 df-op 4589 df-uni 4866 df-int 4905 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-1st 7943 df-2nd 7944 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-1o 8407 df-er 8645 df-map 8777 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-card 9863 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-nn 12158 df-2 12220 df-3 12221 df-4 12222 df-n0 12414 df-z 12501 df-uz 12764 df-fz 13436 df-fzo 13583 df-hash 14266 df-word 14449 df-concat 14506 df-s1 14532 df-s2 14783 df-s3 14784 df-s4 14785 df-wlks 29685 |
| This theorem is referenced by: 3wlkond 30258 3trld 30259 |
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