activity
20152021
most citedOn the Vanishing Topology of Isolated Cohen-Macaulay Codimension 2 Singularities

19 citations · 26 across the 5 of their papers we have counts for

collaborators

7 papers

math.AG2021★ 1 cited

On the topology of determinantal links

Matthias Zach

We study the cohomology of the generic determinantal varieties , their polar multiplicities, their sections $D_k \…

math.AG2021★ 1 cited

Determinantal Singularities

Anne Frühbis-Krüger, Matthias Zach

We survey determinantal singularities, their deformations, and their topology. This class of singularities generalizes the well studied case of complete intersections in several di…

math.AG2021★ 1 cited

Cohomological connectivity of perturbations of map-germs

Yongqiang Liu, Guillermo Peñafort Sanchis, Matthias Zach

Let be a finite map-germ with and the image of a small perturbation . We show that the reduced cohomology of is…

math.AG2020

A generalization of Milnor's formula

Matthias Zach

We describe a generalization of Milnor's formula for the Milnor number of an isolated hypersurface singularity to the case of a function whose restriction to an arbit…

math.AG2018

Bouquet decomposition for determinantal Milnor fibers

Matthias Zach

We provide a bouquet decomposition for the determinantal Milnor fiber of an essentially isolated determinantal singularity of arbitrary type . The building blocks in the d…

math.AG2016★ 4 cited

Vanishing cycles of smoothable isolated Cohen-Macaulay codimension 2 singularities of type 2

Matthias Zach

We extend the results from the previous paper by A. Frühbis-Krüger and the author [arXiv:1501.01915] to the vanishing topology of those singularities in the title. Studying the cas…

math.AG2015★ 19 cited

On the Vanishing Topology of Isolated Cohen-Macaulay Codimension 2 Singularities

Anne Fruehbis-Krueger, Matthias Zach

Isolated Cohen-Macaulay codimension 2 singularities share many common features with isolated complete intersection singularities, but they also exhibit some striking new behaviour.…