11 papers
Splice formulae for Poincaré series of integral homology spheres
Tamás László, András Némethi, György Tőtős
Let M be a plumbed integral homology sphere 3-manifold associated with a connected negative definite plumbing graph . One of its most important invariants is its multivariable P…
Representability of systems of proportionally modular numerical semigroups
Zsolt Baja, Tamás László, Zsuzsa Nagy
In this short note we prove that every system of proportionally modular numerical semigroups is representable by a canonical equivariant resolution of a weighted homogeneous surfac…
Delta invariant of -Cartier curve germs and the genus of representable numerical semigroups
Zsolt Baja, Tamás László, András Némethi
In this article, first we give two formulae for the delta invariant of a complex curve singularity that can be embedded as a -Cartier divisor in a normal surface singu…
Multiplier ideals of normal surface singularities
László Koltai, Tamás László, András Némethi
We study the multiplier ideals and the corresponding jumping numbers and multiplicities in the following context: is a complex analytic normal…
Flat semigroups and weighted homogeneous surface singularities
Zsolt Baja, Tamás László
We consider numerical semigroups associated with normal weighted homogeneous surface singularities with rational homology sphere links. We say that a semigroup is representable if…
On a canonical polynomial for links of elliptic singularities
Tamás László
The canonical polynomial is an important output of the multivariable topological Poincaré series associated with a normal surface singularity. It can be considered as a multivariab…