Wednesday July 24, 2002 in K9509, SFU
3:30 - 4:20
Dr Mark van Hoeij,
Florida State University
Title:"Factoring polynomials by computing 0-1-vectors with lattice reduction."
Abstract:The topic of the talk is an algorithm that uses lattice reduction to handle the combinatorial problem in the factoring algorithm of Zassenhaus. Contrary to Lenstra, Lenstra and Lovasz, the lattice reduction is not used to calculate coefficients of a factor but is only used to solve the combinatorial problem, which is a problem with much smaller coefficients and dimension. The factors are then constructed efficiently in the same way as in Zassenhaus' algorithm.