I am an Assistant Professor at the Mathematics Department of the University of Colorado in Boulder. I just finished a Van Vleck Assistant Professorship at the Mathematics Department of the University of Wisconsin.

Jointly with Ken Kunen I advised a PhD student Dilip Raghavan on his thesis work. He defended May 2008 and is now on a postdoc at the University of Toronto. He received a Sacks prize for his thesis.

My main interests are in mathematical logic, but I will think about anything interesting. My results so far are on various notions of almost disjoint sets (very mad families and maximal cofinitary groups) and effective randomness. I am actively working on broadening my research.

  • 2009 -- : Assistant Professor at the Univ ersity of Colorado, Boulder.
  • 2006 - 2009: Van Vleck Assistant Professor at the University of Wisconsin, Madison
  • 2006: PhD in mathematics from the University of Michigan.
  • 2005: Visiting Scholar at Sun Yat-Sen University
  • 2000: MSc in mathematics from VU University Amsterdam (with Honors)
  • 1999: Master Class in Mathematical Logic, at the Mathematical Research Institute (with Honors)

A longer version of my CV (pdf file) is also available. Also pdf files of all my papers and preprints can be downloaded from the Publications and Slides section of this webpage (there the abstracts of those are also collected).