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Mirrors > Home > MPE Home > Th. List > lswcshw | Structured version Visualization version GIF version |
Description: The last symbol of a word cyclically shifted by N positions is the symbol at index (N-1) of the original word. (Contributed by AV, 21-Mar-2018.) (Revised by AV, 5-Jun-2018.) (Revised by AV, 1-Nov-2018.) |
Ref | Expression |
---|---|
lswcshw | β’ ((π β Word π β§ π β (1...(β―βπ))) β (lastSβ(π cyclShift π)) = (πβ(π β 1))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ovex 7370 | . . 3 β’ (π cyclShift π) β V | |
2 | lsw 14367 | . . 3 β’ ((π cyclShift π) β V β (lastSβ(π cyclShift π)) = ((π cyclShift π)β((β―β(π cyclShift π)) β 1))) | |
3 | 1, 2 | mp1i 13 | . 2 β’ ((π β Word π β§ π β (1...(β―βπ))) β (lastSβ(π cyclShift π)) = ((π cyclShift π)β((β―β(π cyclShift π)) β 1))) |
4 | elfzelz 13357 | . . . 4 β’ (π β (1...(β―βπ)) β π β β€) | |
5 | cshwlen 14610 | . . . 4 β’ ((π β Word π β§ π β β€) β (β―β(π cyclShift π)) = (β―βπ)) | |
6 | 4, 5 | sylan2 593 | . . 3 β’ ((π β Word π β§ π β (1...(β―βπ))) β (β―β(π cyclShift π)) = (β―βπ)) |
7 | 6 | fvoveq1d 7359 | . 2 β’ ((π β Word π β§ π β (1...(β―βπ))) β ((π cyclShift π)β((β―β(π cyclShift π)) β 1)) = ((π cyclShift π)β((β―βπ) β 1))) |
8 | cshwidxn 14620 | . 2 β’ ((π β Word π β§ π β (1...(β―βπ))) β ((π cyclShift π)β((β―βπ) β 1)) = (πβ(π β 1))) | |
9 | 3, 7, 8 | 3eqtrd 2780 | 1 β’ ((π β Word π β§ π β (1...(β―βπ))) β (lastSβ(π cyclShift π)) = (πβ(π β 1))) |
Colors of variables: wff setvar class |
Syntax hints: β wi 4 β§ wa 396 = wceq 1540 β wcel 2105 Vcvv 3441 βcfv 6479 (class class class)co 7337 1c1 10973 β cmin 11306 β€cz 12420 ...cfz 13340 β―chash 14145 Word cword 14317 lastSclsw 14365 cyclShift ccsh 14599 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2707 ax-rep 5229 ax-sep 5243 ax-nul 5250 ax-pow 5308 ax-pr 5372 ax-un 7650 ax-cnex 11028 ax-resscn 11029 ax-1cn 11030 ax-icn 11031 ax-addcl 11032 ax-addrcl 11033 ax-mulcl 11034 ax-mulrcl 11035 ax-mulcom 11036 ax-addass 11037 ax-mulass 11038 ax-distr 11039 ax-i2m1 11040 ax-1ne0 11041 ax-1rid 11042 ax-rnegex 11043 ax-rrecex 11044 ax-cnre 11045 ax-pre-lttri 11046 ax-pre-lttrn 11047 ax-pre-ltadd 11048 ax-pre-mulgt0 11049 ax-pre-sup 11050 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3349 df-reu 3350 df-rab 3404 df-v 3443 df-sbc 3728 df-csb 3844 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3917 df-nul 4270 df-if 4474 df-pw 4549 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4853 df-int 4895 df-iun 4943 df-br 5093 df-opab 5155 df-mpt 5176 df-tr 5210 df-id 5518 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5575 df-we 5577 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-pred 6238 df-ord 6305 df-on 6306 df-lim 6307 df-suc 6308 df-iota 6431 df-fun 6481 df-fn 6482 df-f 6483 df-f1 6484 df-fo 6485 df-f1o 6486 df-fv 6487 df-riota 7293 df-ov 7340 df-oprab 7341 df-mpo 7342 df-om 7781 df-1st 7899 df-2nd 7900 df-frecs 8167 df-wrecs 8198 df-recs 8272 df-rdg 8311 df-1o 8367 df-er 8569 df-en 8805 df-dom 8806 df-sdom 8807 df-fin 8808 df-sup 9299 df-inf 9300 df-card 9796 df-pnf 11112 df-mnf 11113 df-xr 11114 df-ltxr 11115 df-le 11116 df-sub 11308 df-neg 11309 df-div 11734 df-nn 12075 df-2 12137 df-n0 12335 df-z 12421 df-uz 12684 df-rp 12832 df-ico 13186 df-fz 13341 df-fzo 13484 df-fl 13613 df-mod 13691 df-hash 14146 df-word 14318 df-lsw 14366 df-concat 14374 df-substr 14452 df-pfx 14482 df-csh 14600 |
This theorem is referenced by: clwwisshclwws 28667 |
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