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Links of singularities of inner non-degenerate mixed functions (2208.11655v1)

Published 24 Aug 2022 in math.GT

Abstract: We introduce the notion of a (strongly) inner non-degenerate mixed function $f:\mathbb{C}2\to\mathbb{C}$. We show that inner non-degenerate mixed polynomials have weakly isolated singularities and strongly inner non-degenerate mixed polynomials have isolated singularities. Furthermore, under one additional assumption, which we call "niceness", the links of these singularities can be completely characterized in terms of the Newton boundary of $f$. In particular, adding terms above the Newton boundary does not affect the topology of the link. This allows us to define an infinite family of real algebraic links in the 3-sphere.

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