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JOURNALS // Trudy Matematicheskogo Instituta imeni V.A. Steklova // Archive

Trudy Mat. Inst. Steklova, 2012 Volume 276, Pages 239–254 (Mi tm3372)

This article is cited in 3 papers

On the multiplicity of solutions of a system of algebraic equations

A. V. Pukhlikovab

a Steklov Mathematical Institute, Russian Academy of Sciences, Moscow, Russia
b University of Liverpool, Liverpool, UK

Abstract: We obtain upper bounds for the multiplicity of an isolated solution of a system of equations $f_1=\dots=f_M=0$ in $M$ variables, where the set of polynomials $(f_1,\dots,f_M)$ is a tuple of general position in a subvariety of a given codimension which does not exceed $M$, in the space of tuples of polynomials. It is proved that as $M\to\infty$ this multiplicity grows no faster than $\sqrt M\exp[\omega\sqrt M]$, where $\omega>0$ is a certain constant.

UDC: 512.7

Received in August 2011


 English version:
Proceedings of the Steklov Institute of Mathematics, 2012, 276, 234–249

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