Tsukasa Isoshima

activity

20242026

collaborators

4 papers

math.GT2026

Minimal genus trisection diagrams of the elliptic surfaces $E (n)$ via handle diagrams

Tsukasa Isoshima

Lambert-Cole and Meier showed that the elliptic surface $E (n)$ admits a $(12 n - 2, 0)$ -trisection, considering the property that $E (n)$ is a certain double branched cover of $S^2 \tim…

math.GT2026

Trisections and Lefschetz fibrations with $(- n)$ -sections

Tsukasa Isoshima, Reo Yabuguchi

Castro and Ozbagci constructed a trisection of a closed 4-manifold admitting a Lefschetz fibration with a $(- 1)$ -section such that the corresponding trisection diagram can be expli…

math.GT2025

The non-simply connected Price twist for the 4-sphere

Tsukasa Isoshima, Tatsumasa Suzuki

A cutting and pasting operation on a $P^{2}$ -knot $S$ in a $4$ -manifold is called the Price twist. The Price twist for the $4$ -sphere $S^{4}$ yields at most three $4$ -manifolds up to d…

math.GT2024

Trisections of the doubles of some Mazur type 4-manifolds

Tsukasa Isoshima

We show that certain two kinds of trisection diagrams of the doubles of the Mazur type 4-manifolds introduced by Akbulut and Kirby are standard. One is constructed by doubling a ce…

Minimal genus trisection diagrams of the elliptic surfaces E(n) via handle diagrams

Trisections and Lefschetz fibrations with (−n)-sections

The non-simply connected Price twist for the 4-sphere

Trisections of the doubles of some Mazur type 4-manifolds

Minimal genus trisection diagrams of the elliptic surfaces $E (n)$ via handle diagrams

Trisections and Lefschetz fibrations with $(- n)$ -sections