Dan Christensen's home page

I will be on sabbatical in Lisbon from August 2012 until early July 2013.

My papers and preprints.

I am a Managing Editor of Homology, Homotopy and Applications.

Here are some photos from trips I have been on; I also have a Google+ page.

Contact information is below.

My research interests include algebraic topology (especially stable homotopy theory and model categories), derived categories, modular representation theory, mathematical physics (quantum gravity), algebraic and scientific computation, and category theory (especially higher categories). Research group Dan Christensen (faculty) Luke Wolcott (postdoc, 2012-2013) Enxin Wu (M.Sc. 2008; Ph.D. student, Sept 2008 to August 2012; postdoc, fall 2012) Gaohong Wang (M.Sc. 2010; Ph.D. student, Sept 2010 to present) Mingcong Zeng (M.Sc. student, Sept 2012 to present)

What's this?

I am also accepting applications for a postdoctoral fellow in Homotopy Theory, to start roughly July 1, 2013. I will also consider applications in other areas that I work on.

I encourage eligible people in topology or physics to apply for an NSERC Postdoctoral Fellowship, an NSERC Banting Postdoctoral Fellowship (domestic and international applicants eligible), any other NSERC postdoc, an NSF PDF (e.g. a International Research Fellowship Program postdoc, or a Mathematical Sciences Postdoctoral Research Fellowships or a Distinguished International Postdoctoral Research Fellowship), or similar to be held at Western.

The Canadian Government has many scholarships and fellowships that are available for people from many different countries.

• My papers and preprints
• My curriculum vita: dvi, ps, pdf.
• I can supervise graduate students in the Department of Mathematics, the Department of Applied Mathematics and the Program in Theoretical Physics at Western.
• I am an affiliate member of the Perimeter Institute for Theoretical Physics which is located in Waterloo, about a 75 minute drive from Western. Talks at Perimeter.
• I am managing editor of Homology, Homotopy and Applications.
• My Google+ page.
• Information on topology at Western
• Information on spin foam models of quantum gravity
• Western is part of SHARCNet, Canada's largest academic supercomputer. A profile of my research, written by SHARCNet staff. Another by the Faculty of Science.
• Departmental seminars and colloquia. The algebra seminar includes a lot of topology, and we also have a geometry and topology seminar.

The Hopf archive of research papers in topology. The Front for the xxx Mathematics Archive. Direct to the xxx archive. The K-theory archive. MathSciNet, which contains searchable reviews of almost all mathematics publications and many physics publications as well. SAGE is a wonderful program which interfaces to Magma, Maple, Mathematica and MATLAB, and the free programs Axiom, GAP, GP/PARI, Macaulay2, Maxima, Octave, and Singular. It is freely available and open source. Dave Rusin's Mathematics Essays, and his article about algebraic topology. If you find math fun, consider becoming a math major. Talk to me or anyone else in the department if you're curious. A java calculator that performs exact computation with the constructable reals, using a java library. The Rainbow Cinemas at the Galleria. Some thoughts on investment strategies. How to get to London, Ontario, and where to stay.

I've produced some beautiful plots of roots of polynomials, some of which appeared in a Scientific American article.

Dan Christensen
Department of Mathematics
The University of Western Ontario
London, Ontario N6A 5B7
Canada

Office phone: (519) 661-2111 x86530
Fax: (519) 661-3610 (include my full name)

E-mail: