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Mirrors > Home > MPE Home > Th. List > cats1fv | Structured version Visualization version GIF version |
Description: A symbol other than the last in a concatenation with a singleton word. (Contributed by Mario Carneiro, 26-Feb-2016.) |
Ref | Expression |
---|---|
cats1cld.1 | ⊢ 𝑇 = (𝑆 ++ 〈“𝑋”〉) |
cats1cli.2 | ⊢ 𝑆 ∈ Word V |
cats1fvn.3 | ⊢ (♯‘𝑆) = 𝑀 |
cats1fv.4 | ⊢ (𝑌 ∈ 𝑉 → (𝑆‘𝑁) = 𝑌) |
cats1fv.5 | ⊢ 𝑁 ∈ ℕ0 |
cats1fv.6 | ⊢ 𝑁 < 𝑀 |
Ref | Expression |
---|---|
cats1fv | ⊢ (𝑌 ∈ 𝑉 → (𝑇‘𝑁) = 𝑌) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cats1cld.1 | . . . 4 ⊢ 𝑇 = (𝑆 ++ 〈“𝑋”〉) | |
2 | 1 | fveq1i 6757 | . . 3 ⊢ (𝑇‘𝑁) = ((𝑆 ++ 〈“𝑋”〉)‘𝑁) |
3 | cats1cli.2 | . . . 4 ⊢ 𝑆 ∈ Word V | |
4 | s1cli 14238 | . . . 4 ⊢ 〈“𝑋”〉 ∈ Word V | |
5 | cats1fv.5 | . . . . . 6 ⊢ 𝑁 ∈ ℕ0 | |
6 | nn0uz 12549 | . . . . . 6 ⊢ ℕ0 = (ℤ≥‘0) | |
7 | 5, 6 | eleqtri 2837 | . . . . 5 ⊢ 𝑁 ∈ (ℤ≥‘0) |
8 | lencl 14164 | . . . . . 6 ⊢ (𝑆 ∈ Word V → (♯‘𝑆) ∈ ℕ0) | |
9 | nn0z 12273 | . . . . . 6 ⊢ ((♯‘𝑆) ∈ ℕ0 → (♯‘𝑆) ∈ ℤ) | |
10 | 3, 8, 9 | mp2b 10 | . . . . 5 ⊢ (♯‘𝑆) ∈ ℤ |
11 | cats1fv.6 | . . . . . 6 ⊢ 𝑁 < 𝑀 | |
12 | cats1fvn.3 | . . . . . 6 ⊢ (♯‘𝑆) = 𝑀 | |
13 | 11, 12 | breqtrri 5097 | . . . . 5 ⊢ 𝑁 < (♯‘𝑆) |
14 | elfzo2 13319 | . . . . 5 ⊢ (𝑁 ∈ (0..^(♯‘𝑆)) ↔ (𝑁 ∈ (ℤ≥‘0) ∧ (♯‘𝑆) ∈ ℤ ∧ 𝑁 < (♯‘𝑆))) | |
15 | 7, 10, 13, 14 | mpbir3an 1339 | . . . 4 ⊢ 𝑁 ∈ (0..^(♯‘𝑆)) |
16 | ccatval1 14209 | . . . 4 ⊢ ((𝑆 ∈ Word V ∧ 〈“𝑋”〉 ∈ Word V ∧ 𝑁 ∈ (0..^(♯‘𝑆))) → ((𝑆 ++ 〈“𝑋”〉)‘𝑁) = (𝑆‘𝑁)) | |
17 | 3, 4, 15, 16 | mp3an 1459 | . . 3 ⊢ ((𝑆 ++ 〈“𝑋”〉)‘𝑁) = (𝑆‘𝑁) |
18 | 2, 17 | eqtri 2766 | . 2 ⊢ (𝑇‘𝑁) = (𝑆‘𝑁) |
19 | cats1fv.4 | . 2 ⊢ (𝑌 ∈ 𝑉 → (𝑆‘𝑁) = 𝑌) | |
20 | 18, 19 | eqtrid 2790 | 1 ⊢ (𝑌 ∈ 𝑉 → (𝑇‘𝑁) = 𝑌) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1539 ∈ wcel 2108 Vcvv 3422 class class class wbr 5070 ‘cfv 6418 (class class class)co 7255 0cc0 10802 < clt 10940 ℕ0cn0 12163 ℤcz 12249 ℤ≥cuz 12511 ..^cfzo 13311 ♯chash 13972 Word cword 14145 ++ cconcat 14201 〈“cs1 14228 |
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-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-s1 14229 |
This theorem is referenced by: s2fv0 14528 s3fv0 14532 s3fv1 14533 s4fv0 14536 s4fv1 14537 s4fv2 14538 |
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