Marc Röder

E-Mail: roeder.marc[at]

About me

I worked at NUI, Galway, Ireland from 2006 to 2008. After that, I left academia to work as a software developer in the "real world"(TM).

GAP stuff

All code is available under the terms of the GNU General Public License (GPL).

Random thoughts

A few observations about GAP as well as hints and pieces of code can be found on this page.

The RDS package

RDS is a package for finding relative difference sets in non-abelian groups. Especially those defining projective planes.

GAP packages written for the CHA group

During my time in Galway, I wrote the GAP package polymaking which interfaces the geometry software polymake. I also wrote the package HAPcryst which is an extension to the GAP package HAP and can be used to calculate free resolutions of Bieberbach groups.

Marc Roeder (roeder.marc[at]
Last Update: 16th November 2013