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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 14639 | . . 3 ⊢ 〈“𝑋”〉 ∈ Word V | |
| 2 | ccatlen 14608 | . . 3 ⊢ ((𝑊 ∈ Word 𝑉 ∧ 〈“𝑋”〉 ∈ Word V) → (♯‘(𝑊 ++ 〈“𝑋”〉)) = ((♯‘𝑊) + (♯‘〈“𝑋”〉))) | |
| 3 | 1, 2 | mpan2 703 | . 2 ⊢ (𝑊 ∈ Word 𝑉 → (♯‘(𝑊 ++ 〈“𝑋”〉)) = ((♯‘𝑊) + (♯‘〈“𝑋”〉))) |
| 4 | s1len 14640 | . . 3 ⊢ (♯‘〈“𝑋”〉) = 1 | |
| 5 | 4 | oveq2i 7421 | . 2 ⊢ ((♯‘𝑊) + (♯‘〈“𝑋”〉)) = ((♯‘𝑊) + 1) |
| 6 | 3, 5 | eqtrdi 2814 | 1 ⊢ (𝑊 ∈ Word 𝑉 → (♯‘(𝑊 ++ 〈“𝑋”〉)) = ((♯‘𝑊) + 1)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1570 ∈ wcel 2143 Vcvv 3455 ‘cfv 6536 (class class class)co 7410 1c1 11096 + caddc 11098 ♯chash 14362 Word cword 14546 ++ cconcat 14603 〈“cs1 14629 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5238 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-cnex 11151 ax-resscn 11152 ax-1cn 11153 ax-icn 11154 ax-addcl 11155 ax-addrcl 11156 ax-mulcl 11157 ax-mulrcl 11158 ax-mulcom 11159 ax-addass 11160 ax-mulass 11161 ax-distr 11162 ax-i2m1 11163 ax-1ne0 11164 ax-1rid 11165 ax-rnegex 11166 ax-rrecex 11167 ax-cnre 11168 ax-pre-lttri 11169 ax-pre-lttrn 11170 ax-pre-ltadd 11171 ax-pre-mulgt0 11172 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-reu 3370 df-rab 3417 df-v 3457 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 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-int 4913 df-iun 4958 df-br 5110 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5556 df-eprel 5561 df-po 5569 df-so 5570 df-fr 5614 df-we 5616 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-om 7859 df-1st 7982 df-2nd 7983 df-frecs 8274 df-wrecs 8305 df-recs 8354 df-rdg 8393 df-1o 8449 df-er 8690 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-card 9921 df-pnf 11240 df-mnf 11241 df-xr 11242 df-ltxr 11243 df-le 11244 df-sub 11438 df-neg 11439 df-nn 12229 df-n0 12500 df-z 12587 df-uz 12858 df-fz 13531 df-fzo 13679 df-hash 14363 df-word 14547 df-concat 14604 df-s1 14630 |
| This theorem is referenced by: ccatws1lenp1b 14655 wrdlenccats1lenm1 14656 ccatw2s1len 14659 ccatws1n0 14666 ccatw2s1p1 14670 ccatw2s1p2 14671 cats1un 14754 chnind 18672 chnub 18673 chnccats1 18676 gsmsymgrfix 19493 gsmsymgreqlem2 19496 wlklenvclwlk 30003 wwlksext2clwwlk 30408 ccatws1f1olast 33272 cycpmco2lem2 33447 cycpmco2lem3 33448 cycpmco2lem4 33449 cycpmco2lem5 33450 cycpmco2lem6 33451 cycpmco2 33453 1arithidomlem2 33826 1arithidom 33827 dfufd2lem 33839 sseqf 34782 signstfvneq0 34959 signshf 34975 chnerlem1 47598 |
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