All links are semiholomorphic

被引:2
|
作者
Bode, Benjamin [1 ]
机构
[1] CSIC, Inst Ciencias Matemat, Madrid 28049, Spain
关键词
Semiholomorphic polynomial; Weakly isolated singularity; Algebraic link; Trigonometric braid parametrisation;
D O I
10.1007/s40879-023-00678-1
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Semiholomorphic polynomials are functions f : C-2 -> C that can be written as polynomials in complex variables u, v and the complex conjugate v. The origin is a weakly isolated singularity of a polynomial map if it is locally the only critical point on the variety. In this case the intersection of the variety and a sufficiently small 3 -sphere produces a link whose link type is a topological invariant of the singularity. We prove the semiholomorphic analogue of Akbulut's and King's All knots are algebraic, that is, every link type in the 3 -sphere arises as the link of a weakly isolated singularity of a semiholomorphic polynomial. Our proof is constructive, which allows us to obtain an upper bound on the polynomial degree of the constructed functions.
引用
收藏
页数:20
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