Intersection multiplicities of Noetherian functions

Details Intersection multiplicities of Noetherian functions Intersection multiplicities of Noetherian functions

2011-08-08

arxiv.org/abs/1108.1700v1

Mathematics

Complex Variables

Scientific paper

We provide a partial answer to the following problem: \emph{give an effective upper bound on the multiplicity of non-isolated common zero of a tuple of Noetherian functions}. More precisely, consider a foliation defined by two commuting polynomial vector fields $V_1,V_2$ in $\C^n$, and $p$ a nonsingular point of the foliation. Denote by $\cL$ the leaf passing through $p$, and let $F,G\in\C[X]$ be two polynomials. Assume that $F\onL=0,G\onL=0$ have several common branches. We provide an effective procedure which allows to bound from above multipllicity of intersection of remaining branches of $F\onL=0$ with $G\onL=0$ in terms of the degrees and dimensions only.

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