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Mirrors > Home > MPE Home > Th. List > ccat2s1fvwOLD | Structured version Visualization version GIF version |
Description: Obsolete version of ccat2s1fvw 14100 as of 28-Jan-2024. Extract a symbol of a word from the concatenation of the word with two single symbols. (Contributed by AV, 22-Sep-2018.) (Revised by AV, 13-Jan-2020.) (Proof shortened by AV, 1-May-2020.) (New usage is discouraged.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
ccat2s1fvwOLD | ⊢ (((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) ∧ (𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉)) → (((𝑊 ++ 〈“𝑋”〉) ++ 〈“𝑌”〉)‘𝐼) = (𝑊‘𝐼)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ccatw2s1assOLD 14092 | . . . . 5 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → ((𝑊 ++ 〈“𝑋”〉) ++ 〈“𝑌”〉) = (𝑊 ++ (〈“𝑋”〉 ++ 〈“𝑌”〉))) | |
2 | 1 | 3expb 1121 | . . . 4 ⊢ ((𝑊 ∈ Word 𝑉 ∧ (𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉)) → ((𝑊 ++ 〈“𝑋”〉) ++ 〈“𝑌”〉) = (𝑊 ++ (〈“𝑋”〉 ++ 〈“𝑌”〉))) |
3 | 2 | 3ad2antl1 1186 | . . 3 ⊢ (((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) ∧ (𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉)) → ((𝑊 ++ 〈“𝑋”〉) ++ 〈“𝑌”〉) = (𝑊 ++ (〈“𝑋”〉 ++ 〈“𝑌”〉))) |
4 | 3 | fveq1d 6689 | . 2 ⊢ (((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) ∧ (𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉)) → (((𝑊 ++ 〈“𝑋”〉) ++ 〈“𝑌”〉)‘𝐼) = ((𝑊 ++ (〈“𝑋”〉 ++ 〈“𝑌”〉))‘𝐼)) |
5 | simpl1 1192 | . . 3 ⊢ (((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) ∧ (𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉)) → 𝑊 ∈ Word 𝑉) | |
6 | ccat2s1cl 14074 | . . . 4 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (〈“𝑋”〉 ++ 〈“𝑌”〉) ∈ Word 𝑉) | |
7 | 6 | adantl 485 | . . 3 ⊢ (((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) ∧ (𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉)) → (〈“𝑋”〉 ++ 〈“𝑌”〉) ∈ Word 𝑉) |
8 | simp2 1138 | . . . . 5 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) → 𝐼 ∈ ℕ0) | |
9 | lencl 13987 | . . . . . . 7 ⊢ (𝑊 ∈ Word 𝑉 → (♯‘𝑊) ∈ ℕ0) | |
10 | 9 | 3ad2ant1 1134 | . . . . . 6 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) → (♯‘𝑊) ∈ ℕ0) |
11 | nn0ge0 12014 | . . . . . . . . 9 ⊢ (𝐼 ∈ ℕ0 → 0 ≤ 𝐼) | |
12 | 11 | adantl 485 | . . . . . . . 8 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0) → 0 ≤ 𝐼) |
13 | 0red 10735 | . . . . . . . . 9 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0) → 0 ∈ ℝ) | |
14 | nn0re 11998 | . . . . . . . . . 10 ⊢ (𝐼 ∈ ℕ0 → 𝐼 ∈ ℝ) | |
15 | 14 | adantl 485 | . . . . . . . . 9 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0) → 𝐼 ∈ ℝ) |
16 | 9 | nn0red 12050 | . . . . . . . . . 10 ⊢ (𝑊 ∈ Word 𝑉 → (♯‘𝑊) ∈ ℝ) |
17 | 16 | adantr 484 | . . . . . . . . 9 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0) → (♯‘𝑊) ∈ ℝ) |
18 | lelttr 10822 | . . . . . . . . 9 ⊢ ((0 ∈ ℝ ∧ 𝐼 ∈ ℝ ∧ (♯‘𝑊) ∈ ℝ) → ((0 ≤ 𝐼 ∧ 𝐼 < (♯‘𝑊)) → 0 < (♯‘𝑊))) | |
19 | 13, 15, 17, 18 | syl3anc 1372 | . . . . . . . 8 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0) → ((0 ≤ 𝐼 ∧ 𝐼 < (♯‘𝑊)) → 0 < (♯‘𝑊))) |
20 | 12, 19 | mpand 695 | . . . . . . 7 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0) → (𝐼 < (♯‘𝑊) → 0 < (♯‘𝑊))) |
21 | 20 | 3impia 1118 | . . . . . 6 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) → 0 < (♯‘𝑊)) |
22 | elnnnn0b 12033 | . . . . . 6 ⊢ ((♯‘𝑊) ∈ ℕ ↔ ((♯‘𝑊) ∈ ℕ0 ∧ 0 < (♯‘𝑊))) | |
23 | 10, 21, 22 | sylanbrc 586 | . . . . 5 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) → (♯‘𝑊) ∈ ℕ) |
24 | simp3 1139 | . . . . 5 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) → 𝐼 < (♯‘𝑊)) | |
25 | elfzo0 13182 | . . . . 5 ⊢ (𝐼 ∈ (0..^(♯‘𝑊)) ↔ (𝐼 ∈ ℕ0 ∧ (♯‘𝑊) ∈ ℕ ∧ 𝐼 < (♯‘𝑊))) | |
26 | 8, 23, 24, 25 | syl3anbrc 1344 | . . . 4 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) → 𝐼 ∈ (0..^(♯‘𝑊))) |
27 | 26 | adantr 484 | . . 3 ⊢ (((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) ∧ (𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉)) → 𝐼 ∈ (0..^(♯‘𝑊))) |
28 | ccatval1 14032 | . . 3 ⊢ ((𝑊 ∈ Word 𝑉 ∧ (〈“𝑋”〉 ++ 〈“𝑌”〉) ∈ Word 𝑉 ∧ 𝐼 ∈ (0..^(♯‘𝑊))) → ((𝑊 ++ (〈“𝑋”〉 ++ 〈“𝑌”〉))‘𝐼) = (𝑊‘𝐼)) | |
29 | 5, 7, 27, 28 | syl3anc 1372 | . 2 ⊢ (((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) ∧ (𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉)) → ((𝑊 ++ (〈“𝑋”〉 ++ 〈“𝑌”〉))‘𝐼) = (𝑊‘𝐼)) |
30 | 4, 29 | eqtrd 2774 | 1 ⊢ (((𝑊 ∈ Word 𝑉 ∧ 𝐼 ∈ ℕ0 ∧ 𝐼 < (♯‘𝑊)) ∧ (𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉)) → (((𝑊 ++ 〈“𝑋”〉) ++ 〈“𝑌”〉)‘𝐼) = (𝑊‘𝐼)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 ∧ w3a 1088 = wceq 1542 ∈ wcel 2114 class class class wbr 5040 ‘cfv 6350 (class class class)co 7183 ℝcr 10627 0cc0 10628 < clt 10766 ≤ cle 10767 ℕcn 11729 ℕ0cn0 11989 ..^cfzo 13137 ♯chash 13795 Word cword 13968 ++ cconcat 14024 〈“cs1 14051 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2020 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2162 ax-12 2179 ax-ext 2711 ax-rep 5164 ax-sep 5177 ax-nul 5184 ax-pow 5242 ax-pr 5306 ax-un 7492 ax-cnex 10684 ax-resscn 10685 ax-1cn 10686 ax-icn 10687 ax-addcl 10688 ax-addrcl 10689 ax-mulcl 10690 ax-mulrcl 10691 ax-mulcom 10692 ax-addass 10693 ax-mulass 10694 ax-distr 10695 ax-i2m1 10696 ax-1ne0 10697 ax-1rid 10698 ax-rnegex 10699 ax-rrecex 10700 ax-cnre 10701 ax-pre-lttri 10702 ax-pre-lttrn 10703 ax-pre-ltadd 10704 ax-pre-mulgt0 10705 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2075 df-mo 2541 df-eu 2571 df-clab 2718 df-cleq 2731 df-clel 2812 df-nfc 2882 df-ne 2936 df-nel 3040 df-ral 3059 df-rex 3060 df-reu 3061 df-rab 3063 df-v 3402 df-sbc 3686 df-csb 3801 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-pss 3872 df-nul 4222 df-if 4425 df-pw 4500 df-sn 4527 df-pr 4529 df-tp 4531 df-op 4533 df-uni 4807 df-int 4847 df-iun 4893 df-br 5041 df-opab 5103 df-mpt 5121 df-tr 5147 df-id 5439 df-eprel 5444 df-po 5452 df-so 5453 df-fr 5493 df-we 5495 df-xp 5541 df-rel 5542 df-cnv 5543 df-co 5544 df-dm 5545 df-rn 5546 df-res 5547 df-ima 5548 df-pred 6139 df-ord 6186 df-on 6187 df-lim 6188 df-suc 6189 df-iota 6308 df-fun 6352 df-fn 6353 df-f 6354 df-f1 6355 df-fo 6356 df-f1o 6357 df-fv 6358 df-riota 7140 df-ov 7186 df-oprab 7187 df-mpo 7188 df-om 7613 df-1st 7727 df-2nd 7728 df-wrecs 7989 df-recs 8050 df-rdg 8088 df-1o 8144 df-er 8333 df-en 8569 df-dom 8570 df-sdom 8571 df-fin 8572 df-card 9454 df-pnf 10768 df-mnf 10769 df-xr 10770 df-ltxr 10771 df-le 10772 df-sub 10963 df-neg 10964 df-nn 11730 df-n0 11990 df-z 12076 df-uz 12338 df-fz 12995 df-fzo 13138 df-hash 13796 df-word 13969 df-concat 14025 df-s1 14052 |
This theorem is referenced by: ccat2s1fstOLD 14103 |
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