Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > splid | Structured version Visualization version GIF version |
Description: Splicing a subword for the same subword makes no difference. (Contributed by Stefan O'Rear, 20-Aug-2015.) (Proof shortened by AV, 14-Oct-2022.) |
Ref | Expression |
---|---|
splid | ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)))) → (𝑆 splice 〈𝑋, 𝑌, (𝑆 substr 〈𝑋, 𝑌〉)〉) = 𝑆) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ovex 7288 | . . 3 ⊢ (𝑆 substr 〈𝑋, 𝑌〉) ∈ V | |
2 | splval 14392 | . . 3 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)) ∧ (𝑆 substr 〈𝑋, 𝑌〉) ∈ V)) → (𝑆 splice 〈𝑋, 𝑌, (𝑆 substr 〈𝑋, 𝑌〉)〉) = (((𝑆 prefix 𝑋) ++ (𝑆 substr 〈𝑋, 𝑌〉)) ++ (𝑆 substr 〈𝑌, (♯‘𝑆)〉))) | |
3 | 1, 2 | mp3anr3 1458 | . 2 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)))) → (𝑆 splice 〈𝑋, 𝑌, (𝑆 substr 〈𝑋, 𝑌〉)〉) = (((𝑆 prefix 𝑋) ++ (𝑆 substr 〈𝑋, 𝑌〉)) ++ (𝑆 substr 〈𝑌, (♯‘𝑆)〉))) |
4 | ccatpfx 14342 | . . . . 5 ⊢ ((𝑆 ∈ Word 𝐴 ∧ 𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆))) → ((𝑆 prefix 𝑋) ++ (𝑆 substr 〈𝑋, 𝑌〉)) = (𝑆 prefix 𝑌)) | |
5 | 4 | 3expb 1118 | . . . 4 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)))) → ((𝑆 prefix 𝑋) ++ (𝑆 substr 〈𝑋, 𝑌〉)) = (𝑆 prefix 𝑌)) |
6 | 5 | oveq1d 7270 | . . 3 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)))) → (((𝑆 prefix 𝑋) ++ (𝑆 substr 〈𝑋, 𝑌〉)) ++ (𝑆 substr 〈𝑌, (♯‘𝑆)〉)) = ((𝑆 prefix 𝑌) ++ (𝑆 substr 〈𝑌, (♯‘𝑆)〉))) |
7 | simpl 482 | . . . . 5 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)))) → 𝑆 ∈ Word 𝐴) | |
8 | simprr 769 | . . . . 5 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)))) → 𝑌 ∈ (0...(♯‘𝑆))) | |
9 | elfzuz2 13190 | . . . . . . 7 ⊢ (𝑌 ∈ (0...(♯‘𝑆)) → (♯‘𝑆) ∈ (ℤ≥‘0)) | |
10 | 9 | ad2antll 725 | . . . . . 6 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)))) → (♯‘𝑆) ∈ (ℤ≥‘0)) |
11 | eluzfz2 13193 | . . . . . 6 ⊢ ((♯‘𝑆) ∈ (ℤ≥‘0) → (♯‘𝑆) ∈ (0...(♯‘𝑆))) | |
12 | 10, 11 | syl 17 | . . . . 5 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)))) → (♯‘𝑆) ∈ (0...(♯‘𝑆))) |
13 | ccatpfx 14342 | . . . . 5 ⊢ ((𝑆 ∈ Word 𝐴 ∧ 𝑌 ∈ (0...(♯‘𝑆)) ∧ (♯‘𝑆) ∈ (0...(♯‘𝑆))) → ((𝑆 prefix 𝑌) ++ (𝑆 substr 〈𝑌, (♯‘𝑆)〉)) = (𝑆 prefix (♯‘𝑆))) | |
14 | 7, 8, 12, 13 | syl3anc 1369 | . . . 4 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)))) → ((𝑆 prefix 𝑌) ++ (𝑆 substr 〈𝑌, (♯‘𝑆)〉)) = (𝑆 prefix (♯‘𝑆))) |
15 | pfxid 14325 | . . . . 5 ⊢ (𝑆 ∈ Word 𝐴 → (𝑆 prefix (♯‘𝑆)) = 𝑆) | |
16 | 15 | adantr 480 | . . . 4 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)))) → (𝑆 prefix (♯‘𝑆)) = 𝑆) |
17 | 14, 16 | eqtrd 2778 | . . 3 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)))) → ((𝑆 prefix 𝑌) ++ (𝑆 substr 〈𝑌, (♯‘𝑆)〉)) = 𝑆) |
18 | 6, 17 | eqtrd 2778 | . 2 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)))) → (((𝑆 prefix 𝑋) ++ (𝑆 substr 〈𝑋, 𝑌〉)) ++ (𝑆 substr 〈𝑌, (♯‘𝑆)〉)) = 𝑆) |
19 | 3, 18 | eqtrd 2778 | 1 ⊢ ((𝑆 ∈ Word 𝐴 ∧ (𝑋 ∈ (0...𝑌) ∧ 𝑌 ∈ (0...(♯‘𝑆)))) → (𝑆 splice 〈𝑋, 𝑌, (𝑆 substr 〈𝑋, 𝑌〉)〉) = 𝑆) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2108 Vcvv 3422 〈cop 4564 〈cotp 4566 ‘cfv 6418 (class class class)co 7255 0cc0 10802 ℤ≥cuz 12511 ...cfz 13168 ♯chash 13972 Word cword 14145 ++ cconcat 14201 substr csubstr 14281 prefix cpfx 14311 splice csplice 14390 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-ot 4567 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-n0 12164 df-z 12250 df-uz 12512 df-fz 13169 df-fzo 13312 df-hash 13973 df-word 14146 df-concat 14202 df-substr 14282 df-pfx 14312 df-splice 14391 |
This theorem is referenced by: psgnunilem2 19018 |
Copyright terms: Public domain | W3C validator |