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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 14642 | . . 3 ⊢ 〈“𝑋”〉 ∈ Word V | |
| 2 | ccatlen 14611 | . . 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 14643 | . . 3 ⊢ (♯‘〈“𝑋”〉) = 1 | |
| 5 | 4 | oveq2i 7421 | . 2 ⊢ ((♯‘𝑊) + (♯‘〈“𝑋”〉)) = ((♯‘𝑊) + 1) |
| 6 | 3, 5 | eqtrdi 2812 | 1 ⊢ (𝑊 ∈ Word 𝑉 → (♯‘(𝑊 ++ 〈“𝑋”〉)) = ((♯‘𝑊) + 1)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1568 ∈ wcel 2141 Vcvv 3453 ‘cfv 6536 (class class class)co 7410 1c1 11100 + caddc 11102 ♯chash 14365 Word cword 14549 ++ cconcat 14606 〈“cs1 14632 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-rep 5237 ax-sep 5256 ax-nul 5268 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-cnex 11155 ax-resscn 11156 ax-1cn 11157 ax-icn 11158 ax-addcl 11159 ax-addrcl 11160 ax-mulcl 11161 ax-mulrcl 11162 ax-mulcom 11163 ax-addass 11164 ax-mulass 11165 ax-distr 11166 ax-i2m1 11167 ax-1ne0 11168 ax-1rid 11169 ax-rnegex 11170 ax-rrecex 11171 ax-cnre 11172 ax-pre-lttri 11173 ax-pre-lttrn 11174 ax-pre-ltadd 11175 ax-pre-mulgt0 11176 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1571 df-fal 1581 df-ex 1808 df-nf 1812 df-sb 2095 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-int 4912 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 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 7862 df-1st 7985 df-2nd 7986 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-1o 8452 df-er 8693 df-en 8943 df-dom 8944 df-sdom 8945 df-fin 8946 df-card 9924 df-pnf 11244 df-mnf 11245 df-xr 11246 df-ltxr 11247 df-le 11248 df-sub 11442 df-neg 11443 df-nn 12233 df-n0 12504 df-z 12591 df-uz 12862 df-fz 13535 df-fzo 13682 df-hash 14366 df-word 14550 df-concat 14607 df-s1 14633 |
| This theorem is referenced by: ccatws1lenp1b 14658 wrdlenccats1lenm1 14659 ccatw2s1len 14662 ccatws1n0 14669 ccatw2s1p1 14673 ccatw2s1p2 14674 cats1un 14757 chnind 18676 chnub 18677 chnccats1 18680 gsmsymgrfix 19497 gsmsymgreqlem2 19500 wlklenvclwlk 29969 wwlksext2clwwlk 30374 ccatws1f1olast 33238 cycpmco2lem2 33413 cycpmco2lem3 33414 cycpmco2lem4 33415 cycpmco2lem5 33416 cycpmco2lem6 33417 cycpmco2 33419 1arithidomlem2 33792 1arithidom 33793 dfufd2lem 33805 sseqf 34748 signstfvneq0 34925 signshf 34941 chnerlem1 47546 |
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