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Mirrors > Home > MPE Home > Th. List > wlkreslem | Structured version Visualization version GIF version |
Description: Lemma for wlkres 28326. (Contributed by AV, 5-Mar-2021.) (Revised by AV, 30-Nov-2022.) |
Ref | Expression |
---|---|
wlkres.v | ⊢ 𝑉 = (Vtx‘𝐺) |
wlkres.i | ⊢ 𝐼 = (iEdg‘𝐺) |
wlkres.d | ⊢ (𝜑 → 𝐹(Walks‘𝐺)𝑃) |
wlkres.n | ⊢ (𝜑 → 𝑁 ∈ (0..^(♯‘𝐹))) |
wlkres.s | ⊢ (𝜑 → (Vtx‘𝑆) = 𝑉) |
Ref | Expression |
---|---|
wlkreslem | ⊢ (𝜑 → 𝑆 ∈ V) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-1 6 | . 2 ⊢ (𝑆 ∈ V → (𝜑 → 𝑆 ∈ V)) | |
2 | df-nel 3048 | . . 3 ⊢ (𝑆 ∉ V ↔ ¬ 𝑆 ∈ V) | |
3 | wlkres.d | . . . . 5 ⊢ (𝜑 → 𝐹(Walks‘𝐺)𝑃) | |
4 | df-br 5098 | . . . . . 6 ⊢ (𝐹(Walks‘𝐺)𝑃 ↔ 〈𝐹, 𝑃〉 ∈ (Walks‘𝐺)) | |
5 | ne0i 4286 | . . . . . . 7 ⊢ (〈𝐹, 𝑃〉 ∈ (Walks‘𝐺) → (Walks‘𝐺) ≠ ∅) | |
6 | wlkres.s | . . . . . . . . . . . 12 ⊢ (𝜑 → (Vtx‘𝑆) = 𝑉) | |
7 | wlkres.v | . . . . . . . . . . . 12 ⊢ 𝑉 = (Vtx‘𝐺) | |
8 | 6, 7 | eqtrdi 2793 | . . . . . . . . . . 11 ⊢ (𝜑 → (Vtx‘𝑆) = (Vtx‘𝐺)) |
9 | 8 | anim1ci 617 | . . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑆 ∉ V) → (𝑆 ∉ V ∧ (Vtx‘𝑆) = (Vtx‘𝐺))) |
10 | wlk0prc 28310 | . . . . . . . . . 10 ⊢ ((𝑆 ∉ V ∧ (Vtx‘𝑆) = (Vtx‘𝐺)) → (Walks‘𝐺) = ∅) | |
11 | eqneqall 2952 | . . . . . . . . . 10 ⊢ ((Walks‘𝐺) = ∅ → ((Walks‘𝐺) ≠ ∅ → 𝑆 ∈ V)) | |
12 | 9, 10, 11 | 3syl 18 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑆 ∉ V) → ((Walks‘𝐺) ≠ ∅ → 𝑆 ∈ V)) |
13 | 12 | expcom 415 | . . . . . . . 8 ⊢ (𝑆 ∉ V → (𝜑 → ((Walks‘𝐺) ≠ ∅ → 𝑆 ∈ V))) |
14 | 13 | com13 88 | . . . . . . 7 ⊢ ((Walks‘𝐺) ≠ ∅ → (𝜑 → (𝑆 ∉ V → 𝑆 ∈ V))) |
15 | 5, 14 | syl 17 | . . . . . 6 ⊢ (〈𝐹, 𝑃〉 ∈ (Walks‘𝐺) → (𝜑 → (𝑆 ∉ V → 𝑆 ∈ V))) |
16 | 4, 15 | sylbi 216 | . . . . 5 ⊢ (𝐹(Walks‘𝐺)𝑃 → (𝜑 → (𝑆 ∉ V → 𝑆 ∈ V))) |
17 | 3, 16 | mpcom 38 | . . . 4 ⊢ (𝜑 → (𝑆 ∉ V → 𝑆 ∈ V)) |
18 | 17 | com12 32 | . . 3 ⊢ (𝑆 ∉ V → (𝜑 → 𝑆 ∈ V)) |
19 | 2, 18 | sylbir 234 | . 2 ⊢ (¬ 𝑆 ∈ V → (𝜑 → 𝑆 ∈ V)) |
20 | 1, 19 | pm2.61i 182 | 1 ⊢ (𝜑 → 𝑆 ∈ V) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 397 = wceq 1541 ∈ wcel 2106 ≠ wne 2941 ∉ wnel 3047 Vcvv 3442 ∅c0 4274 〈cop 4584 class class class wbr 5097 ‘cfv 6484 (class class class)co 7342 0cc0 10977 ..^cfzo 13488 ♯chash 14150 Vtxcvtx 27655 iEdgciedg 27656 Walkscwlks 28252 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2708 ax-rep 5234 ax-sep 5248 ax-nul 5255 ax-pow 5313 ax-pr 5377 ax-un 7655 ax-cnex 11033 ax-resscn 11034 ax-1cn 11035 ax-icn 11036 ax-addcl 11037 ax-addrcl 11038 ax-mulcl 11039 ax-mulrcl 11040 ax-mulcom 11041 ax-addass 11042 ax-mulass 11043 ax-distr 11044 ax-i2m1 11045 ax-1ne0 11046 ax-1rid 11047 ax-rnegex 11048 ax-rrecex 11049 ax-cnre 11050 ax-pre-lttri 11051 ax-pre-lttrn 11052 ax-pre-ltadd 11053 ax-pre-mulgt0 11054 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-ifp 1062 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2815 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3351 df-rab 3405 df-v 3444 df-sbc 3732 df-csb 3848 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3921 df-nul 4275 df-if 4479 df-pw 4554 df-sn 4579 df-pr 4581 df-op 4585 df-uni 4858 df-int 4900 df-iun 4948 df-br 5098 df-opab 5160 df-mpt 5181 df-tr 5215 df-id 5523 df-eprel 5529 df-po 5537 df-so 5538 df-fr 5580 df-we 5582 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6243 df-ord 6310 df-on 6311 df-lim 6312 df-suc 6313 df-iota 6436 df-fun 6486 df-fn 6487 df-f 6488 df-f1 6489 df-fo 6490 df-f1o 6491 df-fv 6492 df-riota 7298 df-ov 7345 df-oprab 7346 df-mpo 7347 df-om 7786 df-1st 7904 df-2nd 7905 df-frecs 8172 df-wrecs 8203 df-recs 8277 df-rdg 8316 df-1o 8372 df-er 8574 df-map 8693 df-en 8810 df-dom 8811 df-sdom 8812 df-fin 8813 df-card 9801 df-pnf 11117 df-mnf 11118 df-xr 11119 df-ltxr 11120 df-le 11121 df-sub 11313 df-neg 11314 df-nn 12080 df-n0 12340 df-z 12426 df-uz 12689 df-fz 13346 df-fzo 13489 df-hash 14151 df-word 14323 df-wlks 28255 |
This theorem is referenced by: wlkres 28326 |
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