A Gröbner free alternative for polynomial system solving

M Giusti, G Lecerf, B Salvy - Journal of complexity, 2001 - Elsevier
Given a system of polynomial equations and inequations with coefficients in the field of
rational numbers, we show how to compute a geometric resolution of the set of common …

Straight-line programs in geometric elimination theory

M Giusti, J Heintz, JE Morais, J Morgenstem… - Journal of pure and …, 1998 - Elsevier
We present a new method for solving symbolically zero-dimensional polynomial equation
systems in the affine and toric case. The main feature of our method is the use of problem …

Sharp estimates for the arithmetic Nullstellensatz

T Krick, LM Pardo, M Sombra - 2001 - projecteuclid.org
We present sharp estimates for the degree and the height of the polynomials in the
Nullstellensatz over the integer ring ℤ. The result improves previous work of P. Philippon, C …

Lower bounds for Diophantine approximations

M Giusti, J Heintz, K Hägele, JE Morais… - Journal of Pure and …, 1997 - Elsevier
We introduce a subexponential algorithm for geometric solving of multivariate polynomial
equation systems whose bit complexity depends mainly on intrinsic geometric invariants of …

Polar varieties and efficient real elimination

B Bank, M Giusti, J Heintz, GM Mbakop - Mathematische Zeitschrift, 2001 - Springer
Let S_0 be a smooth and compact real variety given by a reduced regular sequence of
polynomials f_1,...,f_p. This paper is devoted to the algorithmic problem of finding efficiently …

[HTML][HTML] Computing the equidimensional decomposition of an algebraic closed set by means of lifting fibers

G Lecerf - Journal of Complexity, 2003 - Elsevier
We present a new probabilistic method for solving systems of polynomial equations and
inequations. Our algorithm computes the equidimensional decomposition of the Zariski …

[PDF][PDF] On triangular decompositions of algebraic varieties

MM Maza - 2000 - csd.uwo.ca
We propose an efficient algorithm for computing triangular decompositions of algebraic
varieties. It is based on an incremental process and produces components in order of …

Polar varieties, real equation solving and data-structures: the hypersurface case

B Bank, M Giusti, J Heintz, GM Mbakop - arXiv preprint alg-geom/9609004, 1996 - arxiv.org
In this paper we apply for the first time a new method for multivariate equation solving which
was developed in\cite {gh1},\cite {gh2},\cite {gh3} for complex root determination to the {\em …

A sparse effective Nullstellensatz

M Sombra - Advances in Applied Mathematics, 1999 - Elsevier
We present bounds for the sparseness in the Nullstellensatz. These bounds can give a
much sharper characterization than degree bounds of the monomial structure of the …

On Smale's 17th problem: a probabilistic positive solution

C Beltrán, LM Pardo - Foundations of Computational Mathematics, 2008 - Springer
Smale's 17th Problem asks “Can a zero of n complex polynomial equations in n unknowns
be found approximately, on the average [for a suitable probability measure on the space of …