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 …

When polynomial equation systems can be “solved” fast?

M Giusti, J Heintz, JE Morais, LM Pardo - … AAECC-11 Paris, France, July 17 …, 1995 - Springer
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 an …

Hilbert's Nullstellensatz is in the polynomial hierarchy

P Koiran - Journal of complexity, 1996 - Elsevier
We show that if the Generalized Riemann Hypothesis is true, the problem of deciding
whether a system of polynomial equations in several complex variables has a solution is in …

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 …

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 …

Cook's versus Valiant's hypothesis

P Bürgisser - Theoretical Computer Science, 2000 - Elsevier
Valiant developed a nonuniform algebraic analogue of the theory of NP-completeness for
computations with polynomials over a field k in (Valiant, Proceedings of the 11th ACM …

Ideal membership in polynomial rings over the integers

M Aschenbrenner - Journal of the American Mathematical Society, 2004 - ams.org
We present a new approach to the ideal membership problem for polynomial rings over the
integers: given polynomials $ f_0, f_1,\dots, f_n\in\mathbb Z [X] $, where $ X=(X_1,\dots …