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| Mirrors > Home > ILE Home > Th. List > wlkreslem | GIF version | ||
| Description: Lemma for wlkres 16791. (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 | wlkres.d | . . 3 ⊢ (𝜑 → 𝐹(Walks‘𝐺)𝑃) | |
| 2 | wlkres.v | . . . 4 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 3 | 2 | wlkvtxm 16752 | . . 3 ⊢ (𝐹(Walks‘𝐺)𝑃 → ∃𝑥 𝑥 ∈ 𝑉) |
| 4 | 1, 3 | syl 14 | . 2 ⊢ (𝜑 → ∃𝑥 𝑥 ∈ 𝑉) |
| 5 | wlkres.s | . . . . 5 ⊢ (𝜑 → (Vtx‘𝑆) = 𝑉) | |
| 6 | 5 | eleq2d 2308 | . . . 4 ⊢ (𝜑 → (𝑥 ∈ (Vtx‘𝑆) ↔ 𝑥 ∈ 𝑉)) |
| 7 | 6 | biimpar 297 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑉) → 𝑥 ∈ (Vtx‘𝑆)) |
| 8 | df-vtx 16426 | . . . 4 ⊢ Vtx = (𝑔 ∈ V ↦ if(𝑔 ∈ (V × V), (1st ‘𝑔), (Base‘𝑔))) | |
| 9 | 8 | mptrcl 5788 | . . 3 ⊢ (𝑥 ∈ (Vtx‘𝑆) → 𝑆 ∈ V) |
| 10 | 7, 9 | syl 14 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑉) → 𝑆 ∈ V) |
| 11 | 4, 10 | exlimddv 1954 | 1 ⊢ (𝜑 → 𝑆 ∈ V) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 = wceq 1402 ∃wex 1545 ∈ wcel 2209 Vcvv 2821 ifcif 3638 class class class wbr 4130 × cxp 4772 ‘cfv 5377 (class class class)co 6085 1st c1st 6372 0cc0 8180 ..^cfzo 10560 ♯chash 11230 Basecbs 13404 Vtxcvtx 16424 iEdgciedg 16425 Walkscwlks 16729 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4246 ax-sep 4249 ax-nul 4259 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-iinf 4735 ax-cnex 8271 ax-resscn 8272 ax-1cn 8273 ax-1re 8274 ax-icn 8275 ax-addcl 8276 ax-addrcl 8277 ax-mulcl 8278 ax-addcom 8280 ax-mulcom 8281 ax-addass 8282 ax-mulass 8283 ax-distr 8284 ax-i2m1 8285 ax-0lt1 8286 ax-1rid 8287 ax-0id 8288 ax-rnegex 8289 ax-cnre 8291 ax-pre-ltirr 8292 ax-pre-ltwlin 8293 ax-pre-lttrn 8294 ax-pre-apti 8295 ax-pre-ltadd 8296 |
| This proof depends on definitions: df-bi 117 df-dc 847 df-ifp 991 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-if 3639 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-iun 4014 df-br 4131 df-opab 4193 df-mpt 4194 df-tr 4230 df-id 4438 df-iord 4511 df-on 4513 df-ilim 4514 df-suc 4516 df-iom 4738 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-iota 5337 df-fun 5379 df-fn 5380 df-f 5381 df-f1 5382 df-fo 5383 df-f1o 5384 df-fv 5385 df-riota 6038 df-ov 6088 df-oprab 6089 df-mpo 6090 df-1st 6374 df-2nd 6375 df-recs 6576 df-frec 6662 df-1o 6687 df-er 6807 df-map 6924 df-en 7023 df-dom 7024 df-fin 7025 df-pnf 8363 df-mnf 8364 df-xr 8365 df-ltxr 8366 df-le 8367 df-sub 8501 df-neg 8502 df-inn 9308 df-2 9366 df-3 9367 df-4 9368 df-5 9369 df-6 9370 df-7 9371 df-8 9372 df-9 9373 df-n0 9569 df-z 9650 df-dec 9783 df-uz 9932 df-fz 10423 df-fzo 10561 df-ihash 11231 df-word 11321 df-ndx 13407 df-slot 13408 df-base 13410 df-edgf 16417 df-vtx 16426 df-iedg 16427 df-wlks 16730 |
| This theorem is used by: wlkres 16791 |
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