Polynomial maps of complex plane with branched valued set isomorphic to complex line

关于整数射影直线的分支覆盖

On branched coverings of the projective line over the integers

该研究探讨整数射影直线水平除子补集的平展基本群，证明其无非平凡有限可解商群的充要条件，还给出特定条件下不存在同构于$\boldsymbol{\text{PSL}}_{2}(q)$商群的结论。

Twelve points on the projective line, branched covers, and rational elliptic fibrations

The following divisors in the space Sym^{12} P^1 of twelve points on P^1 are actually the same: (A) the possible locus of the twelve nodal fibers in a rational elliptic fibration (i.e. a pencil of plane cubic curves); (B) degree 12 binary forms that can be expressed as a cube plus a square; (C) the locus of the twelve tangents to a smooth plane quartic from a general point of the plane; (D) the branch locus of a degree 4 map from a hyperelliptic genus 3 curve to P^1; (E) the branch locus of a degree 3 map from a genus 4 curve to P^1 induced by a theta-characteristic; and several more. The corr…

关于交换C*-代数的动机上同调

On motivic cohomology of commutative C*-algebras

本文对紧Hausdorff空间上连续函数环的Cortiñas--Thom结果进行动机细化，证明其整动机上同调与Betti上同调的自然同构。