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Solving Degenerate Sparse Polynomial Systems Faster

J. Maurice Rojas
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Abstract

Consider a system F of n polynomial equations in n unknowns, over an algebraically closed field of arbitrary characteristic. We present a fast method to find a point in every irreducible component of the zero set Z of F. Our techniques allow us to sharpen and lower prior complexity bounds for this problem by fully taking into account the monomial term structure. As a corollary of our development we also obtain new explicit formulae for the exact number of isolated roots of F and the intersection multiplicity of the positive-dimensional part of Z. Finally, we present a combinatorial construction of non-degenerate polynomial systems, with specified monomial term structure and maximally many isolated roots, which may be of independent interest.

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J. Maurice Rojas. 1998-09-15. Solving Degenerate Sparse Polynomial Systems Faster. https://arxiv.org/abs/math/9809071

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