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Mirrors > Home > MPE Home > Th. List > wlkp1lem2 | Structured version Visualization version GIF version |
Description: Lemma for wlkp1 27951. (Contributed by AV, 6-Mar-2021.) |
Ref | Expression |
---|---|
wlkp1.v | ⊢ 𝑉 = (Vtx‘𝐺) |
wlkp1.i | ⊢ 𝐼 = (iEdg‘𝐺) |
wlkp1.f | ⊢ (𝜑 → Fun 𝐼) |
wlkp1.a | ⊢ (𝜑 → 𝐼 ∈ Fin) |
wlkp1.b | ⊢ (𝜑 → 𝐵 ∈ 𝑊) |
wlkp1.c | ⊢ (𝜑 → 𝐶 ∈ 𝑉) |
wlkp1.d | ⊢ (𝜑 → ¬ 𝐵 ∈ dom 𝐼) |
wlkp1.w | ⊢ (𝜑 → 𝐹(Walks‘𝐺)𝑃) |
wlkp1.n | ⊢ 𝑁 = (♯‘𝐹) |
wlkp1.e | ⊢ (𝜑 → 𝐸 ∈ (Edg‘𝐺)) |
wlkp1.x | ⊢ (𝜑 → {(𝑃‘𝑁), 𝐶} ⊆ 𝐸) |
wlkp1.u | ⊢ (𝜑 → (iEdg‘𝑆) = (𝐼 ∪ {〈𝐵, 𝐸〉})) |
wlkp1.h | ⊢ 𝐻 = (𝐹 ∪ {〈𝑁, 𝐵〉}) |
Ref | Expression |
---|---|
wlkp1lem2 | ⊢ (𝜑 → (♯‘𝐻) = (𝑁 + 1)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | wlkp1.h | . . . 4 ⊢ 𝐻 = (𝐹 ∪ {〈𝑁, 𝐵〉}) | |
2 | 1 | fveq2i 6759 | . . 3 ⊢ (♯‘𝐻) = (♯‘(𝐹 ∪ {〈𝑁, 𝐵〉})) |
3 | 2 | a1i 11 | . 2 ⊢ (𝜑 → (♯‘𝐻) = (♯‘(𝐹 ∪ {〈𝑁, 𝐵〉}))) |
4 | opex 5373 | . . 3 ⊢ 〈𝑁, 𝐵〉 ∈ V | |
5 | wlkp1.w | . . . . 5 ⊢ (𝜑 → 𝐹(Walks‘𝐺)𝑃) | |
6 | wlkp1.i | . . . . . 6 ⊢ 𝐼 = (iEdg‘𝐺) | |
7 | 6 | wlkf 27884 | . . . . 5 ⊢ (𝐹(Walks‘𝐺)𝑃 → 𝐹 ∈ Word dom 𝐼) |
8 | wrdfin 14163 | . . . . 5 ⊢ (𝐹 ∈ Word dom 𝐼 → 𝐹 ∈ Fin) | |
9 | 5, 7, 8 | 3syl 18 | . . . 4 ⊢ (𝜑 → 𝐹 ∈ Fin) |
10 | wlkp1.n | . . . . . 6 ⊢ 𝑁 = (♯‘𝐹) | |
11 | fzonel 13329 | . . . . . . . 8 ⊢ ¬ (♯‘𝐹) ∈ (0..^(♯‘𝐹)) | |
12 | 11 | a1i 11 | . . . . . . 7 ⊢ (𝜑 → ¬ (♯‘𝐹) ∈ (0..^(♯‘𝐹))) |
13 | eleq1 2826 | . . . . . . . 8 ⊢ (𝑁 = (♯‘𝐹) → (𝑁 ∈ (0..^(♯‘𝐹)) ↔ (♯‘𝐹) ∈ (0..^(♯‘𝐹)))) | |
14 | 13 | notbid 317 | . . . . . . 7 ⊢ (𝑁 = (♯‘𝐹) → (¬ 𝑁 ∈ (0..^(♯‘𝐹)) ↔ ¬ (♯‘𝐹) ∈ (0..^(♯‘𝐹)))) |
15 | 12, 14 | syl5ibr 245 | . . . . . 6 ⊢ (𝑁 = (♯‘𝐹) → (𝜑 → ¬ 𝑁 ∈ (0..^(♯‘𝐹)))) |
16 | 10, 15 | ax-mp 5 | . . . . 5 ⊢ (𝜑 → ¬ 𝑁 ∈ (0..^(♯‘𝐹))) |
17 | wrdfn 14159 | . . . . . . 7 ⊢ (𝐹 ∈ Word dom 𝐼 → 𝐹 Fn (0..^(♯‘𝐹))) | |
18 | 5, 7, 17 | 3syl 18 | . . . . . 6 ⊢ (𝜑 → 𝐹 Fn (0..^(♯‘𝐹))) |
19 | fnop 6526 | . . . . . . 7 ⊢ ((𝐹 Fn (0..^(♯‘𝐹)) ∧ 〈𝑁, 𝐵〉 ∈ 𝐹) → 𝑁 ∈ (0..^(♯‘𝐹))) | |
20 | 19 | ex 412 | . . . . . 6 ⊢ (𝐹 Fn (0..^(♯‘𝐹)) → (〈𝑁, 𝐵〉 ∈ 𝐹 → 𝑁 ∈ (0..^(♯‘𝐹)))) |
21 | 18, 20 | syl 17 | . . . . 5 ⊢ (𝜑 → (〈𝑁, 𝐵〉 ∈ 𝐹 → 𝑁 ∈ (0..^(♯‘𝐹)))) |
22 | 16, 21 | mtod 197 | . . . 4 ⊢ (𝜑 → ¬ 〈𝑁, 𝐵〉 ∈ 𝐹) |
23 | 9, 22 | jca 511 | . . 3 ⊢ (𝜑 → (𝐹 ∈ Fin ∧ ¬ 〈𝑁, 𝐵〉 ∈ 𝐹)) |
24 | hashunsng 14035 | . . 3 ⊢ (〈𝑁, 𝐵〉 ∈ V → ((𝐹 ∈ Fin ∧ ¬ 〈𝑁, 𝐵〉 ∈ 𝐹) → (♯‘(𝐹 ∪ {〈𝑁, 𝐵〉})) = ((♯‘𝐹) + 1))) | |
25 | 4, 23, 24 | mpsyl 68 | . 2 ⊢ (𝜑 → (♯‘(𝐹 ∪ {〈𝑁, 𝐵〉})) = ((♯‘𝐹) + 1)) |
26 | 10 | eqcomi 2747 | . . . 4 ⊢ (♯‘𝐹) = 𝑁 |
27 | 26 | a1i 11 | . . 3 ⊢ (𝜑 → (♯‘𝐹) = 𝑁) |
28 | 27 | oveq1d 7270 | . 2 ⊢ (𝜑 → ((♯‘𝐹) + 1) = (𝑁 + 1)) |
29 | 3, 25, 28 | 3eqtrd 2782 | 1 ⊢ (𝜑 → (♯‘𝐻) = (𝑁 + 1)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2108 Vcvv 3422 ∪ cun 3881 ⊆ wss 3883 {csn 4558 {cpr 4560 〈cop 4564 class class class wbr 5070 dom cdm 5580 Fun wfun 6412 Fn wfn 6413 ‘cfv 6418 (class class class)co 7255 Fincfn 8691 0cc0 10802 1c1 10803 + caddc 10805 ..^cfzo 13311 ♯chash 13972 Word cword 14145 Vtxcvtx 27269 iEdgciedg 27270 Edgcedg 27320 Walkscwlks 27866 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-ifp 1060 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-oadd 8271 df-er 8456 df-map 8575 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-dju 9590 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-n0 12164 df-z 12250 df-uz 12512 df-fz 13169 df-fzo 13312 df-hash 13973 df-word 14146 df-wlks 27869 |
This theorem is referenced by: wlkp1lem8 27950 wlkp1 27951 eupthp1 28481 |
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