Postdoc and PhD research interests – University of Copenhagen

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Symmetry and Deformation > About the centre > Postdoc/PhD research

Postdocs and PhD students

Current Postdocs and PhD students | Past Postdocs and PhD students

The current postdocs and PhD students at the Centre for Symmetry and Deformation are here listed with photos and research interests.  Click on a name to jump to research interests.

Postdocs PhD students

Research interests


Sara E. Arklint (PhD, Copenhagen 2012): My research is concerned with classification of nonsimple (purely infinite) C*-algebras. So far I've been focusing on the classification functor filtered K-theory, and on the classification of Cuntz-Krieger algebras and graph algebras.

Tobias Barthel (PhD, Harvard/Oxford 2014): I am interested in stable homotopy theory and its interactions with representation theory and algebraic geometry. In particular, much of my work is inspired by ideas from chromatic and transchromatic homotopy theory. More recently, I have also been thinking about various forms of (local) duality in algebra and topology. 

Christopher Cave (PhD, Southampton 2015): My research is in coarse geometry which lies in the intersection of topology, geometry and operator algebras. My current interest in studying exact and non-exact groups and their consequences. I also have a lot of interaction with geometric group theory, in particular sequence of expanders graphs and their applications to geometric group theory.

Dustin Clausen (PhD, MIT 2013): I am interested in connections between homotopy theory and number theory.
Currently I'm studying a homotopy-theoretic approach to reciprocity laws. This approach is based on the equivalence between the category of finite free Z-modules, which can be thought of as number-theoretic, and the category of tori, which can be thought of as topological. Combined with the machinery of algebraic K-theory, this equivalence allows to use topological arguments to obtain number-theoretic results.

Olivier Gabriel (PhD Paris 7 2011): My research interests center on operator algebras and noncommutative geometry. I work with spectral triples, quantum groups, K-theory and cyclic cohomology. I am especially interested in ergodic actions on C*-algebras.

Rune Haugseng (Phd, Massachusetts Institute of Technology 2013): I am interested in algebraic topology and higher category theory, and their connections with other areas such as (derived) geometry and (topological) quantum field theory.

Markus Hausmann (Phd, University of Bonn, 2016): My research is in algebraic topology, in particular different forms of equivariant homotopy theory. At the moment I am studying global equivariant spectra and try to apply them to problems in equivariant and non-equivariant topology.

Gijsbert Heuts (PhD, Harvard 2015): I am interested in studying unstable homotopy theory using methods from Goodwillie calculus and chromatic homotopy theory. I also think about higher category theory and its applications to these topics.

Alexander Kupers (PhD, Stanford 2016): My research is in applications of algebraic topology to algebra and geometry. In particular, I am interested in the homology groups and homotopy groups of spaces of automorphisms of various objects.

Beren Sanders (PhD, UCLA 2014) My primary research interests lie in the theory and applications of triangulated categories, especially tensor triangular geometry and examples arising in stable homotopy theory, modular representation theory, algebraic geometry, and noncommutative topology. Other interests include equivariant homotopy theory, motivic homotopy theory, higher category theory, and the representation theory of groups and associative algebras.

David Sprehn (PhD, University of Washington 2015):  I work in group cohomology.  I am studying the modular cohomology of the general linear groups over finite fields, and of other finite groups of Lie type.  More generally, I am interested in group actions and characteristic classes.

PhD students

Kevin Aguyar Brix (advisor: S. Eilers): I am interested in the interrelation between topological dynamical systems and their induced operator algebras.
More precisely, I study to which degree relations such as flow equivalence, orbit equivalence or conjugacy is reflected and remembered in the corresponding C*-algebras along with its diagonal.

Rasmus Sylvester Bryder (advisors: M. Musat and M. Rørdam): My research interests lie in the field of operator algebra. At the moment I'm looking into the relationship between groups and their reduced group C*-algebras, with an overall goal being to determine how different group C*-algebras can be from other classes of C*-algebras.

Benjamin Böhme (advisior: J. Grodal): I am interested in equivariant algebraic topology, especially in the various homotopy theories of G-spaces and G-spectra. Very similar to classical ring theory, idempotents in the Burnside ring A(G) yield splittings of G-spectra. However, not much is known about the "algebraic" properties of these decompositions: In what way do (E-infinity) ring structures of the pieces relate to that of the original spectrum? What information do we obtain when restricting attention to localizations or completions, one prime at a time? The goal of my PhD project is to find answers to some of these questions.

Clarisson Canlubo (advisior: R. Nest): My mathematical interests center in noncommutative geometry and all its related areas. At the moment, I am trying to generalize algebraic topological invariants like homotopy groups and monodromy actions in NCG. I am also interested in quantum group theory, K-theory, homological algebra, algebraic topology, and Galois theory. During my spare time, I study algebraic geometry and mirror symmetry. In particular, I am learning derive algebraic geometry.

Martin Søndergaard Christensen (advisor: M. Rørdam): I am primarily interested in the theory of operator algebra, in particular the classification of C*-algebras. Currently I am studying certain divisibilty and comparibility properties of C*-algebras A, usually expressed in terms of the Cuntz semigroup Cu(A), in an effort to understand the relationship between these properties and structural properties of the associated central sequence algebra.

Joshua Hunt (advisor J. Grodal): I will be investigating and calculating Picard groups in algebra and topology. It is expected that this will be done through derived induction theory, relating a G-invariant object to those obtained by restricting to collections of subgroups.

Amalie Høgenhaven (advisor: L. Hessehoft): My research interest lie in algebraic K-theory and homotopy theory in general. I’m especially interested in topological cyclic homology and equivalent stable homotopy theory. My PhD-project is concerned with calculations in the newly defined real algebraic K-theory and the associated real topological cyclic homology. 

Mikala Ørsnes Jansen (advisor: S. Galatius): My research will be in the interplay between homology of groups and the theory of manifolds. Arithmetic groups share many features with diffeomorphism groups of manifolds. One goal will be to better understand the interplay between these two areas. 

Isabelle Laude (advisor J. Grodal): My primary interest is the connections between group theory and homotopy theory, particularly in the case of p-local finite groups and localities. I study mapping spaces with target the classifying space for a p-local finite group to understand the homotopical analogs of group theoretical concepts such as elements of p-power order and centralizers for the classifying space of a p-local finite group.

Matias Lolk (advisor: M. Rørdam): My research focuses on a class of C*-algebras related to so-called separated graphs, introduced by Pere Ara and Ruy Exel. While the theory offers many interesting examples that deserve to be studied on their own, the main question is if the construction gives rise to (nuclear) real rank zero C*-algebras with exotic non-stable K-theories. So far, my work has centered on characterising nuclearity and exactness and describing the ideal strucure in terms of the graph - in particular characterising simplicity. In the near future, I will also start studying obstructions to real rank zero.

Manuel Krannich (advisor: N. Wahl): Currently, my research revolves around homological stability of topological groups. Besides that, I am interested in bordism categories and moduli spaces of manifolds—mainly initiated through my master’s thesis.

Espen Auseth Nielsen (advisor: N. Wahl): I am interested in homotopy theory and homotopical algebra. I am studying the Hochschild homology of En-algebras.


Valerio Proietti (advisor: R. Nest): My interests lie in the field of noncommutative geometry and related areas, such as operator algebras, K-theory and index theory.
My project is based on the study of K-theoretical and cohomological invariants for C*-algebras arising from dynamical systems associated to actions of finite-rank abelian groups. These dynamical systems might emerge from physical contexts, therefore the interplay between modern physics and noncommutative geometry will play a role.

Tomasz Prytula (advisor: J. Møller): I will be studying connections between combinatorial and homotopy theoretical properties of Davis-Januszkiewicz spaces.

Eduardo Scarparo (advisor: M. Rørdam): I am interested in C*-algebras, paradoxical conditions for groups and group actions on C*-algebras.