RISC RISC Research Institute for Symbolic Computation  
  • @techreport{RISC2944,
    author = {Manuel Kauers},
    title = {{Shift Equivalence of P-finite Sequences}},
    language = {english},
    abstract = {We present an algorithm which decides the shift equivalence problem for P-finite sequences. A sequence is called P-finite if it satisfies a homogeneous linear recurrence equation with polynomial coefficients. Two sequences are called shift equivalent if shifting one of the sequences $s$ times makes it identical to the other, for some integer~$s$. Our algorithm computes, for any two P-finite sequences, given via recurrence equation and initial values, all integers $s$ such that shifting the first sequence $s$ times yields the second. },
    number = {2006-21},
    year = {2006},
    institution = {SFB F13},
    length = {13}