A Baby Step-Giant Step Roadmap Algorithm for General Algebraic Sets

作者:Basu S*; Roy M F; El Din M Safey; Schost E
来源:Foundations of Computational Mathematics, 2014, 14(6): 1117-1172.
DOI:10.1007/s10208-014-9212-1

摘要

Let be a real closed field and an ordered domain. We present an algorithm that takes as input a polynomial and computes a description of a roadmap of the set of zeros, of Q in The complexity of the algorithm, measured by the number of arithmetic operations in the ordered domain is bounded by where As a consequence, there exist algorithms for computing the number of semialgebraically connected components of a real algebraic set, whose complexity is also bounded by where The best previously known algorithm for constructing a roadmap of a real algebraic subset of defined by a polynomial of degree d has complexity.

  • 出版日期2014-12