Yi Xie

activity

20232026

most citedConfiguration space integrals and formal smooth structures

2 citations · 2 across the 5 of their papers we have counts for

collaborators

5 papers

math.GT2026

Splitting spheres for $S^{2}$ -links in $S^{4}$

Jianfeng Lin, Yi Xie, Boyu Zhang

We prove that every smooth two-component split sphere link $L ⊔ R \subset S^{4}$ admits infinitely many smooth splitting $3$ -spheres that are topologically non-isotopic. This gene…

math.GT2026

Pseudo-isotopies of 3-manifolds with infinite fundamental groups

Jianfeng Lin, Yi Xie, Boyu Zhang

Suppose $Y$ is a compact, connected, oriented 3-manifold possibly with boundary, such that $π_{1} (Y)$ is infinite. Let $Diff_{\partial} (I \times Y)$ denote the group of s…

math.GT2025

On the mapping class groups of 4-manifolds with 1-handles

Jianfeng Lin, Yi Xie, Boyu Zhang

We develop a framework that generalizes Budney-Gabai's $W_{3}$ invariant on $π_{0} Diff (S^{1} \times D^{3}, \partial)$ to 4-manifolds with 1-handles. As applications, we show that if…

math.GT2025

Dax invariants, light bulbs, and isotopies of symplectic structures

Jianfeng Lin, Weiwei Wu, Yi Xie +1

This paper addresses several isotopy problems on $4$ -manifolds. First, we classify the isotopy classes of embeddings of $Σ$ in $Σ \times S^{2}$ that are geometrically dual to $\{\mbox…

math.GT2023★ 2 cited

Configuration space integrals and formal smooth structures

Jianfeng Lin, Yi Xie

Watanabe disproved the 4-dimensional Smale conjecture by constructing topologically trivial $D^{4}$ -bundles over spheres and showing that they are smoothly nontrivial using configu…

Splitting spheres for S2-links in S4

Pseudo-isotopies of 3-manifolds with infinite fundamental groups

On the mapping class groups of 4-manifolds with 1-handles

Dax invariants, light bulbs, and isotopies of symplectic structures

Configuration space integrals and formal smooth structures

Splitting spheres for $S^{2}$ -links in $S^{4}$