Ju A. Lee

activity

20172026

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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…

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

Lefschetz pencils on a complex projective plane from a topological viewpoint

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