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| Mirrors > Home > MPE Home > Th. List > ccatws1len | Structured version Visualization version GIF version | ||
| Description: The length of the concatenation of a word with a singleton word. (Contributed by Alexander van der Vekens, 22-Sep-2018.) (Revised by AV, 4-Mar-2022.) |
| Ref | Expression |
|---|---|
| ccatws1len | ⊢ (𝑊 ∈ Word 𝑉 → (♯‘(𝑊 ++ 〈“𝑋”〉)) = ((♯‘𝑊) + 1)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | s1cli 14531 | . . 3 ⊢ 〈“𝑋”〉 ∈ Word V | |
| 2 | ccatlen 14501 | . . 3 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 〈“𝑋”〉 ∈ Word V) → (♯‘(𝑊 ++ 〈“𝑋”〉)) = ((♯‘𝑊) + (♯‘〈“𝑋”〉))) | |
| 3 | 1, 2 | mpan2 691 | . 2 ⊢ (𝑊 ∈ Word 𝑉 → (♯‘(𝑊 ++ 〈“𝑋”〉)) = ((♯‘𝑊) + (♯‘〈“𝑋”〉))) |
| 4 | s1len 14532 | . . 3 ⊢ (♯‘〈“𝑋”〉) = 1 | |
| 5 | 4 | oveq2i 7364 | . 2 ⊢ ((♯‘𝑊) + (♯‘〈“𝑋”〉)) = ((♯‘𝑊) + 1) |
| 6 | 3, 5 | eqtrdi 2780 | 1 ⊢ (𝑊 ∈ Word 𝑉 → (♯‘(𝑊 ++ 〈“𝑋”〉)) = ((♯‘𝑊) + 1)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 Vcvv 3438 ‘cfv 6486 (class class class)co 7353 1c1 11029 + caddc 11031 ♯chash 14256 Word cword 14439 ++ cconcat 14496 〈“cs1 14521 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5221 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7675 ax-cnex 11084 ax-resscn 11085 ax-1cn 11086 ax-icn 11087 ax-addcl 11088 ax-addrcl 11089 ax-mulcl 11090 ax-mulrcl 11091 ax-mulcom 11092 ax-addass 11093 ax-mulass 11094 ax-distr 11095 ax-i2m1 11096 ax-1ne0 11097 ax-1rid 11098 ax-rnegex 11099 ax-rrecex 11100 ax-cnre 11101 ax-pre-lttri 11102 ax-pre-lttrn 11103 ax-pre-ltadd 11104 ax-pre-mulgt0 11105 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3346 df-rab 3397 df-v 3440 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4479 df-pw 4555 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4862 df-int 4900 df-iun 4946 df-br 5096 df-opab 5158 df-mpt 5177 df-tr 5203 df-id 5518 df-eprel 5523 df-po 5531 df-so 5532 df-fr 5576 df-we 5578 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-pred 6253 df-ord 6314 df-on 6315 df-lim 6316 df-suc 6317 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-riota 7310 df-ov 7356 df-oprab 7357 df-mpo 7358 df-om 7807 df-1st 7931 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-er 8632 df-en 8880 df-dom 8881 df-sdom 8882 df-fin 8883 df-card 9854 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11368 df-neg 11369 df-nn 12148 df-n0 12404 df-z 12491 df-uz 12755 df-fz 13430 df-fzo 13577 df-hash 14257 df-word 14440 df-concat 14497 df-s1 14522 |
| This theorem is referenced by: ccatws1lenp1b 14547 wrdlenccats1lenm1 14548 ccatw2s1len 14551 ccatws1n0 14558 ccatw2s1p1 14562 ccatw2s1p2 14563 cats1un 14646 gsmsymgrfix 19326 gsmsymgreqlem2 19329 wlklenvclwlk 29618 wwlksext2clwwlk 30020 ccatws1f1olast 32913 chnind 32972 chnub 32973 chnccats1 32976 cycpmco2lem2 33088 cycpmco2lem3 33089 cycpmco2lem4 33090 cycpmco2lem5 33091 cycpmco2lem6 33092 cycpmco2 33094 1arithidomlem2 33492 1arithidom 33493 dfufd2lem 33505 sseqf 34379 signstfvneq0 34559 signshf 34575 |
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