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Theorem clwlkclwwlkfolem 30092

Description: Lemma for clwlkclwwlkfo 30094. (Contributed by AV, 25-May-2022.)

**Hypothesis**
Ref	Expression
clwlkclwwlkf.c	⊢ 𝐶 = {𝑤 ∈ (ClWalks‘𝐺) ∣ 1 ≤ (♯‘(1^st ‘𝑤))}

**Assertion**
Ref	Expression
clwlkclwwlkfolem	⊢ ((𝑊 ∈ Word (Vtx‘𝐺) ∧ 1 ≤ (♯‘𝑊) ∧ ⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ ∈ (ClWalks‘𝐺)) → ⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ ∈ 𝐶)

Distinct variable group: 𝑤,𝐺,𝑓 Allowed substitution hints: 𝐶(𝑤,𝑓) 𝑊(𝑤,𝑓)

Proof of Theorem clwlkclwwlkfolem Dummy variable 𝑐 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		simp3 1139	. 2 ⊢ ((𝑊 ∈ Word (Vtx‘𝐺) ∧ 1 ≤ (♯‘𝑊) ∧ ⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ ∈ (ClWalks‘𝐺)) → ⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ ∈ (ClWalks‘𝐺))
2		wrdlenccats1lenm1 14576	. . . . . . 7 ⊢ (𝑊 ∈ Word (Vtx‘𝐺) → ((♯‘(𝑊 ++ ⟨“(𝑊‘0)”⟩)) − 1) = (♯‘𝑊))
3	2	eqcomd 2743	. . . . . 6 ⊢ (𝑊 ∈ Word (Vtx‘𝐺) → (♯‘𝑊) = ((♯‘(𝑊 ++ ⟨“(𝑊‘0)”⟩)) − 1))
4	3	breq2d 5098	. . . . 5 ⊢ (𝑊 ∈ Word (Vtx‘𝐺) → (1 ≤ (♯‘𝑊) ↔ 1 ≤ ((♯‘(𝑊 ++ ⟨“(𝑊‘0)”⟩)) − 1)))
5	4	biimpa 476	. . . 4 ⊢ ((𝑊 ∈ Word (Vtx‘𝐺) ∧ 1 ≤ (♯‘𝑊)) → 1 ≤ ((♯‘(𝑊 ++ ⟨“(𝑊‘0)”⟩)) − 1))
6	5	3adant3 1133	. . 3 ⊢ ((𝑊 ∈ Word (Vtx‘𝐺) ∧ 1 ≤ (♯‘𝑊) ∧ ⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ ∈ (ClWalks‘𝐺)) → 1 ≤ ((♯‘(𝑊 ++ ⟨“(𝑊‘0)”⟩)) − 1))
7		df-br 5087	. . . . 5 ⊢ (𝑓(ClWalks‘𝐺)(𝑊 ++ ⟨“(𝑊‘0)”⟩) ↔ ⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ ∈ (ClWalks‘𝐺))
8		clwlkiswlk 29857	. . . . . 6 ⊢ (𝑓(ClWalks‘𝐺)(𝑊 ++ ⟨“(𝑊‘0)”⟩) → 𝑓(Walks‘𝐺)(𝑊 ++ ⟨“(𝑊‘0)”⟩))
9		wlklenvm1 29705	. . . . . 6 ⊢ (𝑓(Walks‘𝐺)(𝑊 ++ ⟨“(𝑊‘0)”⟩) → (♯‘𝑓) = ((♯‘(𝑊 ++ ⟨“(𝑊‘0)”⟩)) − 1))
10	8, 9	syl 17	. . . . 5 ⊢ (𝑓(ClWalks‘𝐺)(𝑊 ++ ⟨“(𝑊‘0)”⟩) → (♯‘𝑓) = ((♯‘(𝑊 ++ ⟨“(𝑊‘0)”⟩)) − 1))
11	7, 10	sylbir 235	. . . 4 ⊢ (⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ ∈ (ClWalks‘𝐺) → (♯‘𝑓) = ((♯‘(𝑊 ++ ⟨“(𝑊‘0)”⟩)) − 1))
12	11	3ad2ant3 1136	. . 3 ⊢ ((𝑊 ∈ Word (Vtx‘𝐺) ∧ 1 ≤ (♯‘𝑊) ∧ ⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ ∈ (ClWalks‘𝐺)) → (♯‘𝑓) = ((♯‘(𝑊 ++ ⟨“(𝑊‘0)”⟩)) − 1))
13	6, 12	breqtrrd 5114	. 2 ⊢ ((𝑊 ∈ Word (Vtx‘𝐺) ∧ 1 ≤ (♯‘𝑊) ∧ ⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ ∈ (ClWalks‘𝐺)) → 1 ≤ (♯‘𝑓))
14		vex 3434	. . . . . 6 ⊢ 𝑓 ∈ V
15		ovex 7393	. . . . . 6 ⊢ (𝑊 ++ ⟨“(𝑊‘0)”⟩) ∈ V
16	14, 15	op1std 7945	. . . . 5 ⊢ (𝑐 = ⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ → (1^st ‘𝑐) = 𝑓)
17	16	fveq2d 6838	. . . 4 ⊢ (𝑐 = ⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ → (♯‘(1^st ‘𝑐)) = (♯‘𝑓))
18	17	breq2d 5098	. . 3 ⊢ (𝑐 = ⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ → (1 ≤ (♯‘(1^st ‘𝑐)) ↔ 1 ≤ (♯‘𝑓)))
19		clwlkclwwlkf.c	. . . 4 ⊢ 𝐶 = {𝑤 ∈ (ClWalks‘𝐺) ∣ 1 ≤ (♯‘(1^st ‘𝑤))}
20		2fveq3 6839	. . . . . 6 ⊢ (𝑤 = 𝑐 → (♯‘(1^st ‘𝑤)) = (♯‘(1^st ‘𝑐)))
21	20	breq2d 5098	. . . . 5 ⊢ (𝑤 = 𝑐 → (1 ≤ (♯‘(1^st ‘𝑤)) ↔ 1 ≤ (♯‘(1^st ‘𝑐))))
22	21	cbvrabv 3400	. . . 4 ⊢ {𝑤 ∈ (ClWalks‘𝐺) ∣ 1 ≤ (♯‘(1^st ‘𝑤))} = {𝑐 ∈ (ClWalks‘𝐺) ∣ 1 ≤ (♯‘(1^st ‘𝑐))}
23	19, 22	eqtri 2760	. . 3 ⊢ 𝐶 = {𝑐 ∈ (ClWalks‘𝐺) ∣ 1 ≤ (♯‘(1^st ‘𝑐))}
24	18, 23	elrab2 3638	. 2 ⊢ (⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ ∈ 𝐶 ↔ (⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ ∈ (ClWalks‘𝐺) ∧ 1 ≤ (♯‘𝑓)))
25	1, 13, 24	sylanbrc 584	1 ⊢ ((𝑊 ∈ Word (Vtx‘𝐺) ∧ 1 ≤ (♯‘𝑊) ∧ ⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ ∈ (ClWalks‘𝐺)) → ⟨𝑓, (𝑊 ++ ⟨“(𝑊‘0)”⟩)⟩ ∈ 𝐶)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 {crab 3390 ⟨cop 4574 class class class wbr 5086 ‘cfv 6492 (class class class)co 7360 1^st c1st 7933 0cc0 11029 1c1 11030 ≤ cle 11171 − cmin 11368 ♯chash 14283 Word cword 14466 ++ cconcat 14523 ⟨“cs1 14549 Vtxcvtx 29079 Walkscwlks 29680 ClWalkscclwlks 29853

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 5212 ax-sep 5231 ax-nul 5241 ax-pow 5302 ax-pr 5370 ax-un 7682 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106

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 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-int 4891 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8342 df-1o 8398 df-er 8636 df-map 8768 df-en 8887 df-dom 8888 df-sdom 8889 df-fin 8890 df-card 9854 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12166 df-n0 12429 df-z 12516 df-uz 12780 df-fz 13453 df-fzo 13600 df-hash 14284 df-word 14467 df-concat 14524 df-s1 14550 df-wlks 29683 df-clwlks 29854

This theorem is referenced by: clwlkclwwlkfo 30094

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