Title
A fast parallel algorithm for determining all roots of a polynomial with real roots
Abstract
Given a polynomial p(z) of degree n with m bit integer coefficients and an integer /z, the problem of determining all its roots with error less than 2 -~ is considered. It is shown that this problem is in the class NC if p (z) has all real roots. Some very interesting properties of a Sturm sequence of a polynomial with distinct real roots are proved and used in the design of a fast parallel algorithm for this problem. Using Newton identities and a novel numerical integration scheme for evaluating a con- tour integral to high precision, this algorithm deter- mines good approximations to the linear factors of
Year
DOI
Venue
1988
10.1137/0217069
SIAM J. Comput.
Keywords
DocType
Volume
fast parallel algorithm,real root,parallel algorithm,newton method,iteration method,numerical integration,contour integration,polynomial,parallel algorithms
Journal
17
Issue
ISSN
ISBN
6
0097-5397
0-89791-193-8
Citations 
PageRank 
References 
28
3.07
12
Authors
4
Name
Order
Citations
PageRank
Michael Ben-Or12008420.97
Ephraim Feig212619.36
Dexter C. Kozen35108912.56
Prasoon Tiwari459296.81