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Mirrors > Home > MPE Home > Th. List > cshwidxm | Structured version Visualization version GIF version |
Description: The symbol at index (n-N) of a word of length n (not 0) cyclically shifted by N positions (not 0) is the symbol at index 0 of the original word. (Contributed by AV, 18-May-2018.) (Revised by AV, 21-May-2018.) (Revised by AV, 30-Oct-2018.) |
Ref | Expression |
---|---|
cshwidxm | ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝑁 ∈ (1...(♯‘𝑊))) → ((𝑊 cyclShift 𝑁)‘((♯‘𝑊) − 𝑁)) = (𝑊‘0)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpl 486 | . . 3 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝑁 ∈ (1...(♯‘𝑊))) → 𝑊 ∈ Word 𝑉) | |
2 | elfzelz 13000 | . . . 4 ⊢ (𝑁 ∈ (1...(♯‘𝑊)) → 𝑁 ∈ ℤ) | |
3 | 2 | adantl 485 | . . 3 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝑁 ∈ (1...(♯‘𝑊))) → 𝑁 ∈ ℤ) |
4 | ubmelfzo 13195 | . . . 4 ⊢ (𝑁 ∈ (1...(♯‘𝑊)) → ((♯‘𝑊) − 𝑁) ∈ (0..^(♯‘𝑊))) | |
5 | 4 | adantl 485 | . . 3 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝑁 ∈ (1...(♯‘𝑊))) → ((♯‘𝑊) − 𝑁) ∈ (0..^(♯‘𝑊))) |
6 | cshwidxmod 14256 | . . 3 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝑁 ∈ ℤ ∧ ((♯‘𝑊) − 𝑁) ∈ (0..^(♯‘𝑊))) → ((𝑊 cyclShift 𝑁)‘((♯‘𝑊) − 𝑁)) = (𝑊‘((((♯‘𝑊) − 𝑁) + 𝑁) mod (♯‘𝑊)))) | |
7 | 1, 3, 5, 6 | syl3anc 1372 | . 2 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝑁 ∈ (1...(♯‘𝑊))) → ((𝑊 cyclShift 𝑁)‘((♯‘𝑊) − 𝑁)) = (𝑊‘((((♯‘𝑊) − 𝑁) + 𝑁) mod (♯‘𝑊)))) |
8 | elfz1b 13069 | . . . . . . . 8 ⊢ (𝑁 ∈ (1...(♯‘𝑊)) ↔ (𝑁 ∈ ℕ ∧ (♯‘𝑊) ∈ ℕ ∧ 𝑁 ≤ (♯‘𝑊))) | |
9 | nncn 11726 | . . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℂ) | |
10 | nncn 11726 | . . . . . . . . . 10 ⊢ ((♯‘𝑊) ∈ ℕ → (♯‘𝑊) ∈ ℂ) | |
11 | 9, 10 | anim12ci 617 | . . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ (♯‘𝑊) ∈ ℕ) → ((♯‘𝑊) ∈ ℂ ∧ 𝑁 ∈ ℂ)) |
12 | 11 | 3adant3 1133 | . . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ (♯‘𝑊) ∈ ℕ ∧ 𝑁 ≤ (♯‘𝑊)) → ((♯‘𝑊) ∈ ℂ ∧ 𝑁 ∈ ℂ)) |
13 | 8, 12 | sylbi 220 | . . . . . . 7 ⊢ (𝑁 ∈ (1...(♯‘𝑊)) → ((♯‘𝑊) ∈ ℂ ∧ 𝑁 ∈ ℂ)) |
14 | npcan 10975 | . . . . . . 7 ⊢ (((♯‘𝑊) ∈ ℂ ∧ 𝑁 ∈ ℂ) → (((♯‘𝑊) − 𝑁) + 𝑁) = (♯‘𝑊)) | |
15 | 13, 14 | syl 17 | . . . . . 6 ⊢ (𝑁 ∈ (1...(♯‘𝑊)) → (((♯‘𝑊) − 𝑁) + 𝑁) = (♯‘𝑊)) |
16 | 15 | oveq1d 7187 | . . . . 5 ⊢ (𝑁 ∈ (1...(♯‘𝑊)) → ((((♯‘𝑊) − 𝑁) + 𝑁) mod (♯‘𝑊)) = ((♯‘𝑊) mod (♯‘𝑊))) |
17 | 16 | adantl 485 | . . . 4 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝑁 ∈ (1...(♯‘𝑊))) → ((((♯‘𝑊) − 𝑁) + 𝑁) mod (♯‘𝑊)) = ((♯‘𝑊) mod (♯‘𝑊))) |
18 | nnrp 12485 | . . . . . . . 8 ⊢ ((♯‘𝑊) ∈ ℕ → (♯‘𝑊) ∈ ℝ+) | |
19 | modid0 13358 | . . . . . . . 8 ⊢ ((♯‘𝑊) ∈ ℝ+ → ((♯‘𝑊) mod (♯‘𝑊)) = 0) | |
20 | 18, 19 | syl 17 | . . . . . . 7 ⊢ ((♯‘𝑊) ∈ ℕ → ((♯‘𝑊) mod (♯‘𝑊)) = 0) |
21 | 20 | 3ad2ant2 1135 | . . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ (♯‘𝑊) ∈ ℕ ∧ 𝑁 ≤ (♯‘𝑊)) → ((♯‘𝑊) mod (♯‘𝑊)) = 0) |
22 | 8, 21 | sylbi 220 | . . . . 5 ⊢ (𝑁 ∈ (1...(♯‘𝑊)) → ((♯‘𝑊) mod (♯‘𝑊)) = 0) |
23 | 22 | adantl 485 | . . . 4 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝑁 ∈ (1...(♯‘𝑊))) → ((♯‘𝑊) mod (♯‘𝑊)) = 0) |
24 | 17, 23 | eqtrd 2773 | . . 3 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝑁 ∈ (1...(♯‘𝑊))) → ((((♯‘𝑊) − 𝑁) + 𝑁) mod (♯‘𝑊)) = 0) |
25 | 24 | fveq2d 6680 | . 2 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝑁 ∈ (1...(♯‘𝑊))) → (𝑊‘((((♯‘𝑊) − 𝑁) + 𝑁) mod (♯‘𝑊))) = (𝑊‘0)) |
26 | 7, 25 | eqtrd 2773 | 1 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 𝑁 ∈ (1...(♯‘𝑊))) → ((𝑊 cyclShift 𝑁)‘((♯‘𝑊) − 𝑁)) = (𝑊‘0)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 ∧ w3a 1088 = wceq 1542 ∈ wcel 2114 class class class wbr 5030 ‘cfv 6339 (class class class)co 7172 ℂcc 10615 0cc0 10617 1c1 10618 + caddc 10620 ≤ cle 10756 − cmin 10950 ℕcn 11718 ℤcz 12064 ℝ+crp 12474 ...cfz 12983 ..^cfzo 13126 mod cmo 13330 ♯chash 13784 Word cword 13957 cyclShift ccsh 14241 |
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 2710 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pow 5232 ax-pr 5296 ax-un 7481 ax-cnex 10673 ax-resscn 10674 ax-1cn 10675 ax-icn 10676 ax-addcl 10677 ax-addrcl 10678 ax-mulcl 10679 ax-mulrcl 10680 ax-mulcom 10681 ax-addass 10682 ax-mulass 10683 ax-distr 10684 ax-i2m1 10685 ax-1ne0 10686 ax-1rid 10687 ax-rnegex 10688 ax-rrecex 10689 ax-cnre 10690 ax-pre-lttri 10691 ax-pre-lttrn 10692 ax-pre-ltadd 10693 ax-pre-mulgt0 10694 ax-pre-sup 10695 |
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 2540 df-eu 2570 df-clab 2717 df-cleq 2730 df-clel 2811 df-nfc 2881 df-ne 2935 df-nel 3039 df-ral 3058 df-rex 3059 df-reu 3060 df-rmo 3061 df-rab 3062 df-v 3400 df-sbc 3681 df-csb 3791 df-dif 3846 df-un 3848 df-in 3850 df-ss 3860 df-pss 3862 df-nul 4212 df-if 4415 df-pw 4490 df-sn 4517 df-pr 4519 df-tp 4521 df-op 4523 df-uni 4797 df-int 4837 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5429 df-eprel 5434 df-po 5442 df-so 5443 df-fr 5483 df-we 5485 df-xp 5531 df-rel 5532 df-cnv 5533 df-co 5534 df-dm 5535 df-rn 5536 df-res 5537 df-ima 5538 df-pred 6129 df-ord 6175 df-on 6176 df-lim 6177 df-suc 6178 df-iota 6297 df-fun 6341 df-fn 6342 df-f 6343 df-f1 6344 df-fo 6345 df-f1o 6346 df-fv 6347 df-riota 7129 df-ov 7175 df-oprab 7176 df-mpo 7177 df-om 7602 df-1st 7716 df-2nd 7717 df-wrecs 7978 df-recs 8039 df-rdg 8077 df-1o 8133 df-er 8322 df-en 8558 df-dom 8559 df-sdom 8560 df-fin 8561 df-sup 8981 df-inf 8982 df-card 9443 df-pnf 10757 df-mnf 10758 df-xr 10759 df-ltxr 10760 df-le 10761 df-sub 10952 df-neg 10953 df-div 11378 df-nn 11719 df-2 11781 df-n0 11979 df-z 12065 df-uz 12327 df-rp 12475 df-fz 12984 df-fzo 13127 df-fl 13255 df-mod 13331 df-hash 13785 df-word 13958 df-concat 14014 df-substr 14094 df-pfx 14124 df-csh 14242 |
This theorem is referenced by: (None) |
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