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Mirrors > Home > MPE Home > Th. List > wlkp1lem2 | Structured version Visualization version GIF version |
Description: Lemma for wlkp1 29714. (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 6910 | . . 3 ⊢ (♯‘𝐻) = (♯‘(𝐹 ∪ {〈𝑁, 𝐵〉})) |
3 | 2 | a1i 11 | . 2 ⊢ (𝜑 → (♯‘𝐻) = (♯‘(𝐹 ∪ {〈𝑁, 𝐵〉}))) |
4 | opex 5475 | . . 3 ⊢ 〈𝑁, 𝐵〉 ∈ V | |
5 | wlkp1.w | . . . . 5 ⊢ (𝜑 → 𝐹(Walks‘𝐺)𝑃) | |
6 | wlkp1.i | . . . . . 6 ⊢ 𝐼 = (iEdg‘𝐺) | |
7 | 6 | wlkf 29647 | . . . . 5 ⊢ (𝐹(Walks‘𝐺)𝑃 → 𝐹 ∈ Word dom 𝐼) |
8 | wrdfin 14567 | . . . . 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 13710 | . . . . . . . 8 ⊢ ¬ (♯‘𝐹) ∈ (0..^(♯‘𝐹)) | |
12 | 11 | a1i 11 | . . . . . . 7 ⊢ (𝜑 → ¬ (♯‘𝐹) ∈ (0..^(♯‘𝐹))) |
13 | eleq1 2827 | . . . . . . . 8 ⊢ (𝑁 = (♯‘𝐹) → (𝑁 ∈ (0..^(♯‘𝐹)) ↔ (♯‘𝐹) ∈ (0..^(♯‘𝐹)))) | |
14 | 13 | notbid 318 | . . . . . . 7 ⊢ (𝑁 = (♯‘𝐹) → (¬ 𝑁 ∈ (0..^(♯‘𝐹)) ↔ ¬ (♯‘𝐹) ∈ (0..^(♯‘𝐹)))) |
15 | 12, 14 | imbitrrid 246 | . . . . . 6 ⊢ (𝑁 = (♯‘𝐹) → (𝜑 → ¬ 𝑁 ∈ (0..^(♯‘𝐹)))) |
16 | 10, 15 | ax-mp 5 | . . . . 5 ⊢ (𝜑 → ¬ 𝑁 ∈ (0..^(♯‘𝐹))) |
17 | wrdfn 14563 | . . . . . 6 ⊢ (𝐹 ∈ Word dom 𝐼 → 𝐹 Fn (0..^(♯‘𝐹))) | |
18 | fnop 6678 | . . . . . . 7 ⊢ ((𝐹 Fn (0..^(♯‘𝐹)) ∧ 〈𝑁, 𝐵〉 ∈ 𝐹) → 𝑁 ∈ (0..^(♯‘𝐹))) | |
19 | 18 | ex 412 | . . . . . 6 ⊢ (𝐹 Fn (0..^(♯‘𝐹)) → (〈𝑁, 𝐵〉 ∈ 𝐹 → 𝑁 ∈ (0..^(♯‘𝐹)))) |
20 | 5, 7, 17, 19 | 4syl 19 | . . . . 5 ⊢ (𝜑 → (〈𝑁, 𝐵〉 ∈ 𝐹 → 𝑁 ∈ (0..^(♯‘𝐹)))) |
21 | 16, 20 | mtod 198 | . . . 4 ⊢ (𝜑 → ¬ 〈𝑁, 𝐵〉 ∈ 𝐹) |
22 | 9, 21 | jca 511 | . . 3 ⊢ (𝜑 → (𝐹 ∈ Fin ∧ ¬ 〈𝑁, 𝐵〉 ∈ 𝐹)) |
23 | hashunsng 14428 | . . 3 ⊢ (〈𝑁, 𝐵〉 ∈ V → ((𝐹 ∈ Fin ∧ ¬ 〈𝑁, 𝐵〉 ∈ 𝐹) → (♯‘(𝐹 ∪ {〈𝑁, 𝐵〉})) = ((♯‘𝐹) + 1))) | |
24 | 4, 22, 23 | mpsyl 68 | . 2 ⊢ (𝜑 → (♯‘(𝐹 ∪ {〈𝑁, 𝐵〉})) = ((♯‘𝐹) + 1)) |
25 | 10 | eqcomi 2744 | . . . 4 ⊢ (♯‘𝐹) = 𝑁 |
26 | 25 | a1i 11 | . . 3 ⊢ (𝜑 → (♯‘𝐹) = 𝑁) |
27 | 26 | oveq1d 7446 | . 2 ⊢ (𝜑 → ((♯‘𝐹) + 1) = (𝑁 + 1)) |
28 | 3, 24, 27 | 3eqtrd 2779 | 1 ⊢ (𝜑 → (♯‘𝐻) = (𝑁 + 1)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1537 ∈ wcel 2106 Vcvv 3478 ∪ cun 3961 ⊆ wss 3963 {csn 4631 {cpr 4633 〈cop 4637 class class class wbr 5148 dom cdm 5689 Fun wfun 6557 Fn wfn 6558 ‘cfv 6563 (class class class)co 7431 Fincfn 8984 0cc0 11153 1c1 11154 + caddc 11156 ..^cfzo 13691 ♯chash 14366 Word cword 14549 Vtxcvtx 29028 iEdgciedg 29029 Edgcedg 29079 Walkscwlks 29629 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-10 2139 ax-11 2155 ax-12 2175 ax-ext 2706 ax-rep 5285 ax-sep 5302 ax-nul 5312 ax-pow 5371 ax-pr 5438 ax-un 7754 ax-cnex 11209 ax-resscn 11210 ax-1cn 11211 ax-icn 11212 ax-addcl 11213 ax-addrcl 11214 ax-mulcl 11215 ax-mulrcl 11216 ax-mulcom 11217 ax-addass 11218 ax-mulass 11219 ax-distr 11220 ax-i2m1 11221 ax-1ne0 11222 ax-1rid 11223 ax-rnegex 11224 ax-rrecex 11225 ax-cnre 11226 ax-pre-lttri 11227 ax-pre-lttrn 11228 ax-pre-ltadd 11229 ax-pre-mulgt0 11230 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-ifp 1063 df-3or 1087 df-3an 1088 df-tru 1540 df-fal 1550 df-ex 1777 df-nf 1781 df-sb 2063 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2727 df-clel 2814 df-nfc 2890 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-reu 3379 df-rab 3434 df-v 3480 df-sbc 3792 df-csb 3909 df-dif 3966 df-un 3968 df-in 3970 df-ss 3980 df-pss 3983 df-nul 4340 df-if 4532 df-pw 4607 df-sn 4632 df-pr 4634 df-op 4638 df-uni 4913 df-int 4952 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5583 df-eprel 5589 df-po 5597 df-so 5598 df-fr 5641 df-we 5643 df-xp 5695 df-rel 5696 df-cnv 5697 df-co 5698 df-dm 5699 df-rn 5700 df-res 5701 df-ima 5702 df-pred 6323 df-ord 6389 df-on 6390 df-lim 6391 df-suc 6392 df-iota 6516 df-fun 6565 df-fn 6566 df-f 6567 df-f1 6568 df-fo 6569 df-f1o 6570 df-fv 6571 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-om 7888 df-1st 8013 df-2nd 8014 df-frecs 8305 df-wrecs 8336 df-recs 8410 df-rdg 8449 df-1o 8505 df-oadd 8509 df-er 8744 df-map 8867 df-en 8985 df-dom 8986 df-sdom 8987 df-fin 8988 df-dju 9939 df-card 9977 df-pnf 11295 df-mnf 11296 df-xr 11297 df-ltxr 11298 df-le 11299 df-sub 11492 df-neg 11493 df-nn 12265 df-n0 12525 df-z 12612 df-uz 12877 df-fz 13545 df-fzo 13692 df-hash 14367 df-word 14550 df-wlks 29632 |
This theorem is referenced by: wlkp1lem8 29713 wlkp1 29714 eupthp1 30245 |
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