Vektorli qo'shilish zanjiri - Vectorial addition chain

Matematikada musbat butun sonlar uchun k va s, a vektorli qo'shilish zanjiri bu ketma-ketlik V ning k- manfiy bo'lmagan butun sonlarning o'lchovli vektorlari vmen uchun -k + 1 ≤ mens ketma-ketlik bilan birga w,shu kabi

vk+1 = [1,0,0,...0,0]
vk+2 = [0,1,0,...0,0]
v0 = [0,0,0,,...0,1]
vmen =vj+vr barchasi uchun 1≤mens bilan -k+1≤j, rmen-1
vs = [n0,...,nk-1]
w = (w1,...ws), wmen=(j, r).

Masalan, [22,18,3] uchun vektorli qo'shilish zanjiri

V=([1,0,0],[0,1,0],[0,0,1],[1,1,0],[2,2,0],[4,4,0],[5,4,0],[10,8,0],[11,9,0],[11,9,1],[22,18,2],[22,18,3])
w=((-2,-1),(1,1),(2,2),(-2,3),(4,4),(1,5),(0,6),(7,7),(0,8))

Vektorli qo'shish zanjirlari ko'p funktsiyalarni bajarish uchun juda mos keladi.eksponentatsiya:[iqtibos kerak ]

Kiritish: Elementlar x0,...,xk-1 ning abeliy guruhi G va o'lchovning vektorli qo'shilish zanjiri k hisoblashn0,...,nk-1]
Chiqish: Element x0n0...xk-1nr-1
  1. uchun men =-k+1 ga 0 qil ymenxmen+k-1
  2. uchun men = 1 ga s qil ymenyj×yr
  3. qaytish ys

Qo'shish ketma-ketligi

An qo'shilish ketma-ketligi butun son uchun S ={n0, ..., nr-1} bu qo'shilish zanjiri v ning har bir elementini o'z ichiga olgan S.

Masalan, qo'shilish ketma-ketligini hisoblash

{47,117,343,499}

bu

(1,2,4,8,10,11,18,36,47,55,91,109,117,226,343,434,489,499).

Vektorli qo'shilish zanjirlaridan va aksincha qo'shilish ketma-ketligini topish mumkin, shuning uchun ular ma'lum ma'noda ikkilangan.[1]

Shuningdek qarang

Adabiyotlar

  1. ^ Cohen, H., Frey, G. (tahrirlovchilar): Elliptik va giperelliptik egri kriptografiya bo'yicha qo'llanma. Diskret matematika. Appl., Chapman & Hall / CRC (2006)