efgsval2 - Metamath Proof Explorer

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Theorem efgsval2 19643

Description: Value of the auxiliary function 𝑆 defining a sequence of extensions. (Contributed by Mario Carneiro, 1-Oct-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
efgsval2	⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊 ∧ (𝐴 ++ ⟨“𝐵”⟩) ∈ dom 𝑆) → (𝑆‘(𝐴 ++ ⟨“𝐵”⟩)) = 𝐵)

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: 𝐴(𝑥,𝑦,𝑧,𝑤,𝑣,𝑡,𝑘,𝑚,𝑛) 𝐵(𝑥,𝑦,𝑧,𝑤,𝑣,𝑡,𝑘,𝑚,𝑛) 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) 𝐼(𝑘) 𝑀(𝑦,𝑧,𝑘)

**Proof of Theorem efgsval2**
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 19641	. . 3 ⊢ ((𝐴 ++ ⟨“𝐵”⟩) ∈ dom 𝑆 → (𝑆‘(𝐴 ++ ⟨“𝐵”⟩)) = ((𝐴 ++ ⟨“𝐵”⟩)‘((♯‘(𝐴 ++ ⟨“𝐵”⟩)) − 1)))
8		s1cl 14557	. . . . . . . . 9 ⊢ (𝐵 ∈ 𝑊 → ⟨“𝐵”⟩ ∈ Word 𝑊)
9		ccatlen 14530	. . . . . . . . 9 ⊢ ((𝐴 ∈ Word 𝑊 ∧ ⟨“𝐵”⟩ ∈ Word 𝑊) → (♯‘(𝐴 ++ ⟨“𝐵”⟩)) = ((♯‘𝐴) + (♯‘⟨“𝐵”⟩)))
10	8, 9	sylan2 592	. . . . . . . 8 ⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊) → (♯‘(𝐴 ++ ⟨“𝐵”⟩)) = ((♯‘𝐴) + (♯‘⟨“𝐵”⟩)))
11		s1len 14561	. . . . . . . . 9 ⊢ (♯‘⟨“𝐵”⟩) = 1
12	11	oveq2i 7423	. . . . . . . 8 ⊢ ((♯‘𝐴) + (♯‘⟨“𝐵”⟩)) = ((♯‘𝐴) + 1)
13	10, 12	eqtrdi 2787	. . . . . . 7 ⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊) → (♯‘(𝐴 ++ ⟨“𝐵”⟩)) = ((♯‘𝐴) + 1))
14	13	oveq1d 7427	. . . . . 6 ⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊) → ((♯‘(𝐴 ++ ⟨“𝐵”⟩)) − 1) = (((♯‘𝐴) + 1) − 1))
15		lencl 14488	. . . . . . . . . 10 ⊢ (𝐴 ∈ Word 𝑊 → (♯‘𝐴) ∈ ℕ₀)
16	15	nn0cnd 12539	. . . . . . . . 9 ⊢ (𝐴 ∈ Word 𝑊 → (♯‘𝐴) ∈ ℂ)
17		ax-1cn 11172	. . . . . . . . 9 ⊢ 1 ∈ ℂ
18		pncan 11471	. . . . . . . . 9 ⊢ (((♯‘𝐴) ∈ ℂ ∧ 1 ∈ ℂ) → (((♯‘𝐴) + 1) − 1) = (♯‘𝐴))
19	16, 17, 18	sylancl 585	. . . . . . . 8 ⊢ (𝐴 ∈ Word 𝑊 → (((♯‘𝐴) + 1) − 1) = (♯‘𝐴))
20	16	addlidd 11420	. . . . . . . 8 ⊢ (𝐴 ∈ Word 𝑊 → (0 + (♯‘𝐴)) = (♯‘𝐴))
21	19, 20	eqtr4d 2774	. . . . . . 7 ⊢ (𝐴 ∈ Word 𝑊 → (((♯‘𝐴) + 1) − 1) = (0 + (♯‘𝐴)))
22	21	adantr 480	. . . . . 6 ⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊) → (((♯‘𝐴) + 1) − 1) = (0 + (♯‘𝐴)))
23	14, 22	eqtrd 2771	. . . . 5 ⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊) → ((♯‘(𝐴 ++ ⟨“𝐵”⟩)) − 1) = (0 + (♯‘𝐴)))
24	23	fveq2d 6895	. . . 4 ⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊) → ((𝐴 ++ ⟨“𝐵”⟩)‘((♯‘(𝐴 ++ ⟨“𝐵”⟩)) − 1)) = ((𝐴 ++ ⟨“𝐵”⟩)‘(0 + (♯‘𝐴))))
25		simpl 482	. . . . 5 ⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊) → 𝐴 ∈ Word 𝑊)
26	8	adantl 481	. . . . 5 ⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊) → ⟨“𝐵”⟩ ∈ Word 𝑊)
27		1nn 12228	. . . . . . . 8 ⊢ 1 ∈ ℕ
28	11, 27	eqeltri 2828	. . . . . . 7 ⊢ (♯‘⟨“𝐵”⟩) ∈ ℕ
29		lbfzo0 13677	. . . . . . 7 ⊢ (0 ∈ (0..^(♯‘⟨“𝐵”⟩)) ↔ (♯‘⟨“𝐵”⟩) ∈ ℕ)
30	28, 29	mpbir 230	. . . . . 6 ⊢ 0 ∈ (0..^(♯‘⟨“𝐵”⟩))
31	30	a1i 11	. . . . 5 ⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊) → 0 ∈ (0..^(♯‘⟨“𝐵”⟩)))
32		ccatval3 14534	. . . . 5 ⊢ ((𝐴 ∈ Word 𝑊 ∧ ⟨“𝐵”⟩ ∈ Word 𝑊 ∧ 0 ∈ (0..^(♯‘⟨“𝐵”⟩))) → ((𝐴 ++ ⟨“𝐵”⟩)‘(0 + (♯‘𝐴))) = (⟨“𝐵”⟩‘0))
33	25, 26, 31, 32	syl3anc 1370	. . . 4 ⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊) → ((𝐴 ++ ⟨“𝐵”⟩)‘(0 + (♯‘𝐴))) = (⟨“𝐵”⟩‘0))
34		s1fv 14565	. . . . 5 ⊢ (𝐵 ∈ 𝑊 → (⟨“𝐵”⟩‘0) = 𝐵)
35	34	adantl 481	. . . 4 ⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊) → (⟨“𝐵”⟩‘0) = 𝐵)
36	24, 33, 35	3eqtrd 2775	. . 3 ⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊) → ((𝐴 ++ ⟨“𝐵”⟩)‘((♯‘(𝐴 ++ ⟨“𝐵”⟩)) − 1)) = 𝐵)
37	7, 36	sylan9eqr 2793	. 2 ⊢ (((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊) ∧ (𝐴 ++ ⟨“𝐵”⟩) ∈ dom 𝑆) → (𝑆‘(𝐴 ++ ⟨“𝐵”⟩)) = 𝐵)
38	37	3impa 1109	1 ⊢ ((𝐴 ∈ Word 𝑊 ∧ 𝐵 ∈ 𝑊 ∧ (𝐴 ++ ⟨“𝐵”⟩) ∈ dom 𝑆) → (𝑆‘(𝐴 ++ ⟨“𝐵”⟩)) = 𝐵)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2105 ∀wral 3060 {crab 3431 ∖ cdif 3945 ∅c0 4322 {csn 4628 ⟨cop 4634 ⟨cotp 4636 ∪ ciun 4997 ↦ cmpt 5231 I cid 5573 × cxp 5674 dom cdm 5676 ran crn 5677 ‘cfv 6543 (class class class)co 7412 ∈ cmpo 7414 1_oc1o 8463 2_oc2o 8464 ℂcc 11112 0cc0 11114 1c1 11115 + caddc 11117 − cmin 11449 ℕcn 12217 ...cfz 13489 ..^cfzo 13632 ♯chash 14295 Word cword 14469 ++ cconcat 14525 ⟨“cs1 14550 splice csplice 14704 ⟨“cs2 14797 ~_FG cefg 19616

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2702 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7729 ax-cnex 11170 ax-resscn 11171 ax-1cn 11172 ax-icn 11173 ax-addcl 11174 ax-addrcl 11175 ax-mulcl 11176 ax-mulrcl 11177 ax-mulcom 11178 ax-addass 11179 ax-mulass 11180 ax-distr 11181 ax-i2m1 11182 ax-1ne0 11183 ax-1rid 11184 ax-rnegex 11185 ax-rrecex 11186 ax-cnre 11187 ax-pre-lttri 11188 ax-pre-lttrn 11189 ax-pre-ltadd 11190 ax-pre-mulgt0 11191

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-reu 3376 df-rab 3432 df-v 3475 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-int 4951 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7368 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7860 df-1st 7979 df-2nd 7980 df-frecs 8270 df-wrecs 8301 df-recs 8375 df-rdg 8414 df-1o 8470 df-er 8707 df-en 8944 df-dom 8945 df-sdom 8946 df-fin 8947 df-card 9938 df-pnf 11255 df-mnf 11256 df-xr 11257 df-ltxr 11258 df-le 11259 df-sub 11451 df-neg 11452 df-nn 12218 df-n0 12478 df-z 12564 df-uz 12828 df-fz 13490 df-fzo 13633 df-hash 14296 df-word 14470 df-concat 14526 df-s1 14551

This theorem is referenced by: efgsfo 19649 efgredlemd 19654 efgrelexlemb 19660

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