Naohiko Kasuya

collaborators

3 papers

math.GT2026

Every cusp singularity link admits infinitely many strong symplectic fillings

Naohiko Kasuya, Takahiro Oba

In this paper, we show that if the link of an isolated complex surface singularity is either a $S o l^{3}$ -manifold or an $S L (2; R)$ -manifold with its canonical con…

math.GT2026

Lefschetz fibrations on the Milnor fibers of cusp and simple elliptic singularities

Naohiko Kasuya, Hiroki Kodama, Yoshihiko Mitsumatsu +1

We show that the total space of the Milnor fibration associated with any cusp or simple elliptic singularity in complex three variables admits an $S^{1}$ -parametric genus-one Lefsche…

math.GT2025

Classification of orientable torus bundles over closed orientable surfaces

Naohiko Kasuya, Issei Noda

Let $g$ be a non-negative integer, $I^£_{g}$ a closed orientable surface of genus $g$ , and $M_{g}$ its mapping class group. We classify all the group homomorphisms $Ï_1(Î£_g)…