[HTML][HTML] From approximate factorization to root isolation with application to cylindrical algebraic decomposition

K Mehlhorn, M Sagraloff, P Wang - Journal of Symbolic Computation, 2015 - Elsevier
We present an algorithm for isolating all roots of an arbitrary complex polynomial p that also
works in the presence of multiple roots provided that (1) the number of distinct roots is given …

[HTML][HTML] On the complexity of computing with planar algebraic curves

A Kobel, M Sagraloff - Journal of Complexity, 2015 - Elsevier
In this paper, we give improved bounds for the computational complexity of computing with
planar algebraic curves. More specifically, for arbitrary coprime polynomials f, g∈ Z [x, y] …

p-adic algorithm for bivariate Gröbner bases

É Schost, C St-Pierre - … of the 2023 International Symposium on …, 2023 - dl.acm.org
We present a p-adic algorithm to recover the lexicographic Gröbner basis of an ideal in with
a generating set in, with a complexity that is less than cubic in terms of the dimension of and …

Newton iteration for lexicographic Gröbner bases in two variables

É Schost, C St-Pierre - Journal of Algebra, 2024 - Elsevier
We present an m-adic Newton iteration with quadratic convergence for lexicographic
Gröbner basis of zero dimensional ideals in two variables. We rely on a structural result …

[HTML][HTML] Separating linear forms and rational univariate representations of bivariate systems

Y Bouzidi, S Lazard, M Pouget, F Rouillier - Journal of Symbolic …, 2015 - Elsevier
We address the problem of solving systems of bivariate polynomials with integer coefficients.
We first present an algorithm for computing a separating linear form of such systems, that is …

Exact symbolic–numeric computation of planar algebraic curves

E Berberich, P Emeliyanenko, A Kobel… - Theoretical Computer …, 2013 - Elsevier
We present a certified and complete algorithm to compute arrangements of real planar
algebraic curves. It computes the decomposition of the plane induced by a finite number of …

On the boolean complexity of real root refinement

VY Pan, EP Tsigaridas - … of the 38th International Symposium on …, 2013 - dl.acm.org
We assume that a real square-free polynomial A has a degree d, a maximum coefficient
bitsize τ and a real root lying in an isolating interval and having no nonreal roots nearby (we …

Nearly optimal refinement of real roots of a univariate polynomial

VY Pan, EP Tsigaridas - Journal of Symbolic Computation, 2016 - Elsevier
We assume that a real square-free polynomial A has a degree d, a maximum coefficient
bitsize τ and a real root lying in an isolating interval and having no nonreal roots nearby (we …

On the complexity of solving zero-dimensional polynomial systems via projection

C Brand, M Sagraloff - Proceedings of the ACM on International …, 2016 - dl.acm.org
Given a zero-dimensional polynomial system consisting of n integer polynomials in n
variables, we propose a certified and complete method to compute all complex solutions of …

Continuous amortization and extensions: with applications to bisection-based root isolation

MA Burr - Journal of Symbolic Computation, 2016 - Elsevier
Subdivision-based algorithms recursively subdivide an input region until the smaller
subregions can be processed. It is a challenge to analyze the complexity of such algorithms …