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arXiv · 1812.00614

Lê numbers and Newton diagram

Christophe Eyral·Grzegorz Oleksik·Adam Różycki
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Abstract

We give an algorithm to compute the Lê numbers of (the germ of) a Newton non-degenerate complex analytic function $f\colon(\mathbb{C}^n,0) \rightarrow (\mathbb{C},0)$ in terms of certain invariants attached to the Newton diagram of the function $f+z_1^{α_1}+\cdots +z_d^{α_d}$, where $d$ is the dimension of the critical locus of $f$ and $α_1,\ldots, α_d$ are sufficiently large integers. This is a version for non-isolated singularities of a famous theorem of A. G. Kouchnirenko. As a corollary, we obtain that Newton non-degenerate functions with the same Newton diagram have the same Lê numbers.

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Christophe Eyral, Grzegorz Oleksik, Adam Różycki. 2018-12-03. Lê numbers and Newton diagram. https://arxiv.org/abs/1812.00614

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