17 citations · 35 across the 28 of their papers we have counts for
29 papers
Homogeneous Milnor fibers and Kato--Matsumoto bounds via simplicial multiwedges
Masaharu Ishikawa, Tat-Thang Nguyen
For every and , we construct a homogeneous polynomial of degree whose Milnor fiber is exactly -connected and whose rational cohomology contains a…
Topology of the links of cDV singularities of types for and for
Masaharu Ishikawa, Atsuko Katanaga
We show that the second integral homology group of the link of an isolated compound Du Val (cDV, for short) singularity of type is either trivial or a torsion-free abelian g…
New -Zariski pairs of surface singularities
Christophe Eyral, Masaharu Ishikawa, Mutsuo Oka +1
To the best of the authors' knowledge, all previously known examples of -, -, link-, or ordinary Zariski pairs of surface singularities in consist of (possib…
Newton weighted-Lê-Yomdin polynomials and -Zariski pairs of surface singularities
Christophe Eyral, Masaharu Ishikawa, Mutsuo Oka
We investigate surface singularities defined by weighted-Lê-Yomdin polynomials, with a particular focus on a specific subclass that we refer to as Newton weighted-Lê-Yomdin polynom…
Twist spun knots of twist spun knots of classical knots
Mizuki Fukuda, Masaharu Ishikawa
A -twist spun knot is an -dimensional knot in the -dimensional sphere which is obtained from an -dimensional knot in the -dimensional sphere by applying an ope…
Combinatorial cusp count and clover invariants
Sebastian Baader, Masaharu Ishikawa
We construct efficient topological cobordisms between torus links and large connected sums of trefoil knots. As an application, we show that the signature invariant at $ω=ζ_6…