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Theorem efgsdmi 18352

Description: Property of the last link in the chain of extensions. (Contributed by Mario Carneiro, 29-Sep-2015.)

**Hypotheses**
Ref	Expression
efgval.w	⊢ 𝑊 = ( I ‘Word (𝐼 × 2_𝑜))
efgval.r	⊢ ∼ = ( ~_FG ‘𝐼)
efgval2.m	⊢ 𝑀 = (𝑦 ∈ 𝐼, 𝑧 ∈ 2_𝑜 ↦ ⟨𝑦, (1_𝑜 ∖ 𝑧)⟩)
efgval2.t	⊢ 𝑇 = (𝑣 ∈ 𝑊 ↦ (𝑛 ∈ (0...(♯‘𝑣)), 𝑤 ∈ (𝐼 × 2_𝑜) ↦ (𝑣 splice ⟨𝑛, 𝑛, ⟨“𝑤(𝑀‘𝑤)”⟩⟩)))
efgred.d	⊢ 𝐷 = (𝑊 ∖ ∪ 𝑥 ∈ 𝑊 ran (𝑇‘𝑥))
efgred.s	⊢ 𝑆 = (𝑚 ∈ {𝑡 ∈ (Word 𝑊 ∖ {∅}) ∣ ((𝑡‘0) ∈ 𝐷 ∧ ∀𝑘 ∈ (1..^(♯‘𝑡))(𝑡‘𝑘) ∈ ran (𝑇‘(𝑡‘(𝑘 − 1))))} ↦ (𝑚‘((♯‘𝑚) − 1)))

**Assertion**
Ref	Expression
efgsdmi	⊢ ((𝐹 ∈ dom 𝑆 ∧ ((♯‘𝐹) − 1) ∈ ℕ) → (𝑆‘𝐹) ∈ ran (𝑇‘(𝐹‘(((♯‘𝐹) − 1) − 1))))

Distinct variable groups: 𝑦,𝑧 𝑡,𝑛,𝑣,𝑤,𝑦,𝑧,𝑚,𝑥 𝑚,𝑀 𝑥,𝑛,𝑀,𝑡,𝑣,𝑤 𝑘,𝑚,𝑡,𝑥,𝑇 𝑘,𝑛,𝑣,𝑤,𝑦,𝑧,𝑊,𝑚,𝑡,𝑥 ∼ ,𝑚,𝑡,𝑥,𝑦,𝑧 𝑚,𝐼,𝑛,𝑡,𝑣,𝑤,𝑥,𝑦,𝑧 𝐷,𝑚,𝑡 Allowed substitution hints: 𝐷(𝑥,𝑦,𝑧,𝑤,𝑣,𝑘,𝑛) ∼ (𝑤,𝑣,𝑘,𝑛) 𝑆(𝑥,𝑦,𝑧,𝑤,𝑣,𝑡,𝑘,𝑚,𝑛) 𝑇(𝑦,𝑧,𝑤,𝑣,𝑛) 𝐹(𝑥,𝑦,𝑧,𝑤,𝑣,𝑡,𝑘,𝑚,𝑛) 𝐼(𝑘) 𝑀(𝑦,𝑧,𝑘)

Proof of Theorem efgsdmi Dummy variable 𝑖 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		efgval.w	. . . 4 ⊢ 𝑊 = ( I ‘Word (𝐼 × 2_𝑜))
2		efgval.r	. . . 4 ⊢ ∼ = ( ~_FG ‘𝐼)
3		efgval2.m	. . . 4 ⊢ 𝑀 = (𝑦 ∈ 𝐼, 𝑧 ∈ 2_𝑜 ↦ ⟨𝑦, (1_𝑜 ∖ 𝑧)⟩)
4		efgval2.t	. . . 4 ⊢ 𝑇 = (𝑣 ∈ 𝑊 ↦ (𝑛 ∈ (0...(♯‘𝑣)), 𝑤 ∈ (𝐼 × 2_𝑜) ↦ (𝑣 splice ⟨𝑛, 𝑛, ⟨“𝑤(𝑀‘𝑤)”⟩⟩)))
5		efgred.d	. . . 4 ⊢ 𝐷 = (𝑊 ∖ ∪ 𝑥 ∈ 𝑊 ran (𝑇‘𝑥))
6		efgred.s	. . . 4 ⊢ 𝑆 = (𝑚 ∈ {𝑡 ∈ (Word 𝑊 ∖ {∅}) ∣ ((𝑡‘0) ∈ 𝐷 ∧ ∀𝑘 ∈ (1..^(♯‘𝑡))(𝑡‘𝑘) ∈ ran (𝑇‘(𝑡‘(𝑘 − 1))))} ↦ (𝑚‘((♯‘𝑚) − 1)))
7	1, 2, 3, 4, 5, 6	efgsval 18351	. . 3 ⊢ (𝐹 ∈ dom 𝑆 → (𝑆‘𝐹) = (𝐹‘((♯‘𝐹) − 1)))
8	7	adantr 466	. 2 ⊢ ((𝐹 ∈ dom 𝑆 ∧ ((♯‘𝐹) − 1) ∈ ℕ) → (𝑆‘𝐹) = (𝐹‘((♯‘𝐹) − 1)))
9		fveq2 6333	. . . 4 ⊢ (𝑖 = ((♯‘𝐹) − 1) → (𝐹‘𝑖) = (𝐹‘((♯‘𝐹) − 1)))
10		fvoveq1 6819	. . . . . 6 ⊢ (𝑖 = ((♯‘𝐹) − 1) → (𝐹‘(𝑖 − 1)) = (𝐹‘(((♯‘𝐹) − 1) − 1)))
11	10	fveq2d 6337	. . . . 5 ⊢ (𝑖 = ((♯‘𝐹) − 1) → (𝑇‘(𝐹‘(𝑖 − 1))) = (𝑇‘(𝐹‘(((♯‘𝐹) − 1) − 1))))
12	11	rneqd 5490	. . . 4 ⊢ (𝑖 = ((♯‘𝐹) − 1) → ran (𝑇‘(𝐹‘(𝑖 − 1))) = ran (𝑇‘(𝐹‘(((♯‘𝐹) − 1) − 1))))
13	9, 12	eleq12d 2844	. . 3 ⊢ (𝑖 = ((♯‘𝐹) − 1) → ((𝐹‘𝑖) ∈ ran (𝑇‘(𝐹‘(𝑖 − 1))) ↔ (𝐹‘((♯‘𝐹) − 1)) ∈ ran (𝑇‘(𝐹‘(((♯‘𝐹) − 1) − 1)))))
14	1, 2, 3, 4, 5, 6	efgsdm 18350	. . . . 5 ⊢ (𝐹 ∈ dom 𝑆 ↔ (𝐹 ∈ (Word 𝑊 ∖ {∅}) ∧ (𝐹‘0) ∈ 𝐷 ∧ ∀𝑖 ∈ (1..^(♯‘𝐹))(𝐹‘𝑖) ∈ ran (𝑇‘(𝐹‘(𝑖 − 1)))))
15	14	simp3bi 1141	. . . 4 ⊢ (𝐹 ∈ dom 𝑆 → ∀𝑖 ∈ (1..^(♯‘𝐹))(𝐹‘𝑖) ∈ ran (𝑇‘(𝐹‘(𝑖 − 1))))
16	15	adantr 466	. . 3 ⊢ ((𝐹 ∈ dom 𝑆 ∧ ((♯‘𝐹) − 1) ∈ ℕ) → ∀𝑖 ∈ (1..^(♯‘𝐹))(𝐹‘𝑖) ∈ ran (𝑇‘(𝐹‘(𝑖 − 1))))
17		simpr 471	. . . . . . 7 ⊢ ((𝐹 ∈ dom 𝑆 ∧ ((♯‘𝐹) − 1) ∈ ℕ) → ((♯‘𝐹) − 1) ∈ ℕ)
18		nnuz 11930	. . . . . . 7 ⊢ ℕ = (ℤ_≥‘1)
19	17, 18	syl6eleq 2860	. . . . . 6 ⊢ ((𝐹 ∈ dom 𝑆 ∧ ((♯‘𝐹) − 1) ∈ ℕ) → ((♯‘𝐹) − 1) ∈ (ℤ_≥‘1))
20		eluzfz1 12555	. . . . . 6 ⊢ (((♯‘𝐹) − 1) ∈ (ℤ_≥‘1) → 1 ∈ (1...((♯‘𝐹) − 1)))
21	19, 20	syl 17	. . . . 5 ⊢ ((𝐹 ∈ dom 𝑆 ∧ ((♯‘𝐹) − 1) ∈ ℕ) → 1 ∈ (1...((♯‘𝐹) − 1)))
22	14	simp1bi 1139	. . . . . . . 8 ⊢ (𝐹 ∈ dom 𝑆 → 𝐹 ∈ (Word 𝑊 ∖ {∅}))
23	22	adantr 466	. . . . . . 7 ⊢ ((𝐹 ∈ dom 𝑆 ∧ ((♯‘𝐹) − 1) ∈ ℕ) → 𝐹 ∈ (Word 𝑊 ∖ {∅}))
24	23	eldifad 3735	. . . . . 6 ⊢ ((𝐹 ∈ dom 𝑆 ∧ ((♯‘𝐹) − 1) ∈ ℕ) → 𝐹 ∈ Word 𝑊)
25		lencl 13520	. . . . . 6 ⊢ (𝐹 ∈ Word 𝑊 → (♯‘𝐹) ∈ ℕ₀)
26		nn0z 11607	. . . . . 6 ⊢ ((♯‘𝐹) ∈ ℕ₀ → (♯‘𝐹) ∈ ℤ)
27		fzoval 12679	. . . . . 6 ⊢ ((♯‘𝐹) ∈ ℤ → (1..^(♯‘𝐹)) = (1...((♯‘𝐹) − 1)))
28	24, 25, 26, 27	4syl 19	. . . . 5 ⊢ ((𝐹 ∈ dom 𝑆 ∧ ((♯‘𝐹) − 1) ∈ ℕ) → (1..^(♯‘𝐹)) = (1...((♯‘𝐹) − 1)))
29	21, 28	eleqtrrd 2853	. . . 4 ⊢ ((𝐹 ∈ dom 𝑆 ∧ ((♯‘𝐹) − 1) ∈ ℕ) → 1 ∈ (1..^(♯‘𝐹)))
30		fzoend 12767	. . . 4 ⊢ (1 ∈ (1..^(♯‘𝐹)) → ((♯‘𝐹) − 1) ∈ (1..^(♯‘𝐹)))
31	29, 30	syl 17	. . 3 ⊢ ((𝐹 ∈ dom 𝑆 ∧ ((♯‘𝐹) − 1) ∈ ℕ) → ((♯‘𝐹) − 1) ∈ (1..^(♯‘𝐹)))
32	13, 16, 31	rspcdva 3466	. 2 ⊢ ((𝐹 ∈ dom 𝑆 ∧ ((♯‘𝐹) − 1) ∈ ℕ) → (𝐹‘((♯‘𝐹) − 1)) ∈ ran (𝑇‘(𝐹‘(((♯‘𝐹) − 1) − 1))))
33	8, 32	eqeltrd 2850	1 ⊢ ((𝐹 ∈ dom 𝑆 ∧ ((♯‘𝐹) − 1) ∈ ℕ) → (𝑆‘𝐹) ∈ ran (𝑇‘(𝐹‘(((♯‘𝐹) − 1) − 1))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 382 = wceq 1631 ∈ wcel 2145 ∀wral 3061 {crab 3065 ∖ cdif 3720 ∅c0 4063 {csn 4317 ⟨cop 4323 ⟨cotp 4325 ∪ ciun 4655 ↦ cmpt 4864 I cid 5157 × cxp 5248 dom cdm 5250 ran crn 5251 ‘cfv 6030 (class class class)co 6796 ↦ cmpt2 6798 1_𝑜c1o 7710 2_𝑜c2o 7711 0cc0 10142 1c1 10143 − cmin 10472 ℕcn 11226 ℕ₀cn0 11499 ℤcz 11584 ℤ_≥cuz 11893 ...cfz 12533 ..^cfzo 12673 ♯chash 13321 Word cword 13487 splice csplice 13492 ⟨“cs2 13795 ~_FG cefg 18326

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1870 ax-4 1885 ax-5 1991 ax-6 2057 ax-7 2093 ax-8 2147 ax-9 2154 ax-10 2174 ax-11 2190 ax-12 2203 ax-13 2408 ax-ext 2751 ax-rep 4905 ax-sep 4916 ax-nul 4924 ax-pow 4975 ax-pr 5035 ax-un 7100 ax-cnex 10198 ax-resscn 10199 ax-1cn 10200 ax-icn 10201 ax-addcl 10202 ax-addrcl 10203 ax-mulcl 10204 ax-mulrcl 10205 ax-mulcom 10206 ax-addass 10207 ax-mulass 10208 ax-distr 10209 ax-i2m1 10210 ax-1ne0 10211 ax-1rid 10212 ax-rnegex 10213 ax-rrecex 10214 ax-cnre 10215 ax-pre-lttri 10216 ax-pre-lttrn 10217 ax-pre-ltadd 10218 ax-pre-mulgt0 10219

This theorem depends on definitions: df-bi 197 df-an 383 df-or 837 df-3or 1072 df-3an 1073 df-tru 1634 df-ex 1853 df-nf 1858 df-sb 2050 df-eu 2622 df-mo 2623 df-clab 2758 df-cleq 2764 df-clel 2767 df-nfc 2902 df-ne 2944 df-nel 3047 df-ral 3066 df-rex 3067 df-reu 3068 df-rab 3070 df-v 3353 df-sbc 3588 df-csb 3683 df-dif 3726 df-un 3728 df-in 3730 df-ss 3737 df-pss 3739 df-nul 4064 df-if 4227 df-pw 4300 df-sn 4318 df-pr 4320 df-tp 4322 df-op 4324 df-uni 4576 df-int 4613 df-iun 4657 df-br 4788 df-opab 4848 df-mpt 4865 df-tr 4888 df-id 5158 df-eprel 5163 df-po 5171 df-so 5172 df-fr 5209 df-we 5211 df-xp 5256 df-rel 5257 df-cnv 5258 df-co 5259 df-dm 5260 df-rn 5261 df-res 5262 df-ima 5263 df-pred 5822 df-ord 5868 df-on 5869 df-lim 5870 df-suc 5871 df-iota 5993 df-fun 6032 df-fn 6033 df-f 6034 df-f1 6035 df-fo 6036 df-f1o 6037 df-fv 6038 df-riota 6757 df-ov 6799 df-oprab 6800 df-mpt2 6801 df-om 7217 df-1st 7319 df-2nd 7320 df-wrecs 7563 df-recs 7625 df-rdg 7663 df-1o 7717 df-oadd 7721 df-er 7900 df-en 8114 df-dom 8115 df-sdom 8116 df-fin 8117 df-card 8969 df-pnf 10282 df-mnf 10283 df-xr 10284 df-ltxr 10285 df-le 10286 df-sub 10474 df-neg 10475 df-nn 11227 df-n0 11500 df-z 11585 df-uz 11894 df-fz 12534 df-fzo 12674 df-hash 13322 df-word 13495

This theorem is referenced by: efgs1b 18356 efgredlemg 18362 efgredlemd 18364 efgredlem 18367

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