Ju A. Lee

activity

20172026

collaborators

3 papers

math.GT2026

Knot surgery $4$ -manifolds $E (n)_{K}$ without $1$ - and $3$ -handles

Ju A Lee, Ki-Heon Yun

In this article, we demonstrate that for any positive integer $n$ , the knot surgery $4$ -manifold $E (n)_{K}$ has a handle decomposition without $1$ - and $3$ -handles. Here, $K$ represe…

math.GT2025

Lefschetz pencils on a complex projective plane from a topological viewpoint

Ju A Lee

In this article, we present a differential topological construction of symplectic Lefschetz pencils of genus $\frac{( d - 1 ) ( d - 2 )}{2}$ with $d^{2}$ base points and $3 (d - 1)^{2}$ critical p…

math.AG2017

Double Kodaira fibrations with small signature

Ju A Lee, Michael Lönne, Sönke Rollenske

Kodaira fibrations are surfaces of general type with a non-isotrivial fibration, which are differentiable fibre bundles. They are known to have positive signature divisible by $4$ .…

Knot surgery 4-manifolds E(n)K​ without 1- and 3-handles

Lefschetz pencils on a complex projective plane from a topological viewpoint

Double Kodaira fibrations with small signature

Knot surgery $4$ -manifolds $E (n)_{K}$ without $1$ - and $3$ -handles