Neck-pinching of [Formula: see text] -structures in the [Formula: see text] -character variety [0.03%]
扭饰理论中关于[A1A2]-挠结构在[A1A2]-特征变种中的应用研究
Shinpei Baba
Shinpei Baba
We characterize a certain neck-pinching degeneration of (marked) C P 1 -structures on a closed oriented surface S of genus at least two. In a more general setting, we take a path of C P 1 -structures C t ( t ⩾ 0 ) on S...
Rank-expanding satellites, Whitehead doubles, and Heegaard Floer homology [0.03%]
秩扩张卫星，怀特黑德加倍及Heegaard-Floer同调理论
Irving Dai,Matthew Hedden,Abhishek Mallick et al.
Irving Dai et al.
We show that a large class of satellite operators are rank-expanding; that is, they map some rank-one subgroup of the concordance group onto an infinite linearly independent set. Our work constitutes the first systematic study of this prope...