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I am Martin Westerholt-Raum, Associate Professor at Chalmers Technical University in Gothenburg, Sweden. Starting January 2016 I hold a Ungar Forskare grant by Vetenskapsrådet. From 2012 to 2014, I held an ETH Postdoctoral Fellowship, which was cofinanced by the Marie Curie Actions for People COFUND Program. I am former PhD student of Don B. Zagier at MPI for Mathematics in Bonn.

  • Have a look at my CV.
  • Check my ORCID profile. My ORCID is 0000-0002-3485-8596.
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Reseach interests

My major research interests are modular forms and their applications in mathematics and physics. More specifically, I am interested in

Major grants


Some of my publications come along with software or data. See the download page.

Note that the versions of my paper on arXiv or HAL usually do not coincide with published revisions, if not indicated otherwise. For some journals, I strongly recommend to use arXiv version.

Research Publications




Various Publications



Algebraic Number Theory 2016/17.2

In the second period 2016/17, I teach a course on algebraic number theory. The course webpage will be available later.

High Performance Computing 2015/16.4

In the fourth period 2015/16, I teach a course on high performance computing. See the course website for more information.

Given Courses

PhD Students


“On Direct Integration for Mirror Curves of Genus Two and an Almost Meromorphic Siegel Modular Form”.

The Sage scripts used to compute Fourier expansions, and the resulting data.

“Computing Genus 1 Jacobi Forms”.

The expansions of vector valued modular forms that I computed.

“M24 - Twisted Product Expansions are Siegel Modular Forms”.

The Sage code used to compute the results, and the resuls in machine readable form.

The modular forms framework.

A recent version of the modular forms framework, integrated into PSage, is available on GitHub. It does not, however, include all available implementations. I will integrate them into my PSage branch as soon as possible.

“Computing Borcherds Products”.

Example code and results that was used in this publication. Use my hermitian branch of Purple Sage.

“Kohnen’s limit process for real-analytic Siegel modular forms”.

Sage files containing the computer assisted proofs.

“Efficiently generated spaces of modular forms and the Böcherer conjecture”.

Data coming with this paper.


My office is in

My post address is

You can send me an e-mail at .