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Mirrors > Home > MPE Home > Th. List > s2len | Structured version Visualization version GIF version |
Description: The length of a doubleton word. (Contributed by Stefan O'Rear, 23-Aug-2015.) (Revised by Mario Carneiro, 26-Feb-2016.) |
Ref | Expression |
---|---|
s2len | ⊢ (♯‘〈“𝐴𝐵”〉) = 2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-s2 14198 | . 2 ⊢ 〈“𝐴𝐵”〉 = (〈“𝐴”〉 ++ 〈“𝐵”〉) | |
2 | s1cli 13947 | . 2 ⊢ 〈“𝐴”〉 ∈ Word V | |
3 | s1len 13948 | . 2 ⊢ (♯‘〈“𝐴”〉) = 1 | |
4 | 1p1e2 11750 | . 2 ⊢ (1 + 1) = 2 | |
5 | 1, 2, 3, 4 | cats1len 14210 | 1 ⊢ (♯‘〈“𝐴𝐵”〉) = 2 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1528 ‘cfv 6348 1c1 10526 2c2 11680 ♯chash 13678 〈“cs1 13937 〈“cs2 14191 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1787 ax-4 1801 ax-5 1902 ax-6 1961 ax-7 2006 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2151 ax-12 2167 ax-ext 2790 ax-rep 5181 ax-sep 5194 ax-nul 5201 ax-pow 5257 ax-pr 5320 ax-un 7450 ax-cnex 10581 ax-resscn 10582 ax-1cn 10583 ax-icn 10584 ax-addcl 10585 ax-addrcl 10586 ax-mulcl 10587 ax-mulrcl 10588 ax-mulcom 10589 ax-addass 10590 ax-mulass 10591 ax-distr 10592 ax-i2m1 10593 ax-1ne0 10594 ax-1rid 10595 ax-rnegex 10596 ax-rrecex 10597 ax-cnre 10598 ax-pre-lttri 10599 ax-pre-lttrn 10600 ax-pre-ltadd 10601 ax-pre-mulgt0 10602 |
This theorem depends on definitions: df-bi 208 df-an 397 df-or 842 df-3or 1080 df-3an 1081 df-tru 1531 df-ex 1772 df-nf 1776 df-sb 2061 df-mo 2615 df-eu 2647 df-clab 2797 df-cleq 2811 df-clel 2890 df-nfc 2960 df-ne 3014 df-nel 3121 df-ral 3140 df-rex 3141 df-reu 3142 df-rab 3144 df-v 3494 df-sbc 3770 df-csb 3881 df-dif 3936 df-un 3938 df-in 3940 df-ss 3949 df-pss 3951 df-nul 4289 df-if 4464 df-pw 4537 df-sn 4558 df-pr 4560 df-tp 4562 df-op 4564 df-uni 4831 df-int 4868 df-iun 4912 df-br 5058 df-opab 5120 df-mpt 5138 df-tr 5164 df-id 5453 df-eprel 5458 df-po 5467 df-so 5468 df-fr 5507 df-we 5509 df-xp 5554 df-rel 5555 df-cnv 5556 df-co 5557 df-dm 5558 df-rn 5559 df-res 5560 df-ima 5561 df-pred 6141 df-ord 6187 df-on 6188 df-lim 6189 df-suc 6190 df-iota 6307 df-fun 6350 df-fn 6351 df-f 6352 df-f1 6353 df-fo 6354 df-f1o 6355 df-fv 6356 df-riota 7103 df-ov 7148 df-oprab 7149 df-mpo 7150 df-om 7570 df-1st 7678 df-2nd 7679 df-wrecs 7936 df-recs 7997 df-rdg 8035 df-1o 8091 df-oadd 8095 df-er 8278 df-en 8498 df-dom 8499 df-sdom 8500 df-fin 8501 df-card 9356 df-pnf 10665 df-mnf 10666 df-xr 10667 df-ltxr 10668 df-le 10669 df-sub 10860 df-neg 10861 df-nn 11627 df-2 11688 df-n0 11886 df-z 11970 df-uz 12232 df-fz 12881 df-fzo 13022 df-hash 13679 df-word 13850 df-concat 13911 df-s1 13938 df-s2 14198 |
This theorem is referenced by: s2dm 14240 s3fv0 14241 s3fv1 14242 s3fv2 14243 s3len 14244 lsws2 14254 s3tpop 14259 s4prop 14260 s3eqs2s1eq 14288 pfx2 14297 psgnunilem2 18552 efgtlen 18781 efgredleme 18798 efgredlemc 18800 frgpnabllem1 18922 2wlkdlem1 27631 2wlkdlem2 27632 2wlkdlem4 27634 2pthdlem1 27636 2wlkond 27643 2pthd 27646 2pthon3v 27649 umgr2adedgwlk 27651 s2elclwwlknon2 27810 1wlkdlem1 27843 wlk2v2e 27863 pfx1s2 30542 s2rn 30547 cshw1s2 30561 cyc2fv1 30690 cyc2fv2 30691 lmat22lem 30981 lmat22e11 30982 lmat22e12 30983 lmat22e21 30984 lmat22e22 30985 lmat22det 30986 fiblem 31555 fib0 31556 fib1 31557 fibp1 31558 2cycld 32282 umgr2cycl 32285 amgm2d 40429 amgmw2d 44833 |
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