Dan Christensen

Dan Christensen's home page

I am Professor in the Department of Mathematics at The University of Western Ontario in London, Ontario, with a cross appointment to the Department of Applied Mathematics, and an affiliation with the Perimeter Institute for Theoretical Physics.

I am currently the Graduate Chair for the Department of Mathematics.

My papers, preprints and talks.

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), homotopy type theory and univalent foundations, derived categories, modular representation theory, mathematical physics (quantum gravity), algebraic and scientific computation, and category theory (especially higher categories).

Research group

Dan Christensen (faculty)
Chris Kapulkin (postdoc, 2014-2016)
James Richardson (Ph.D. student, Sept 2015 until present)
Marco Vergura (Ph.D. student, Sept 2015 until present)
Mitchell Riley (M.Sc. student, Sept 2015 until present)
Shiyam Thavandiran (M.Sc. student, Sept 2015 until present)
    tet plot What's this?

I am organizing a Workshop on Homotopy Type Theory and Univalent Foundations of Mathematics at The Fields Institute, May 16-20, 2016. I am also organizing a Workshop on Triangulated Categories at the Banff International Research Station, June 20-24, 2016.

I intend to accept one or two new graduate students for September 2016, in the areas of homotopy theory, homotopy type theory, topology, representation theory, mathematical physics, etc. If you are interested, please contact me and send an application to our department mentioning my name. To be sure your application can be evaluated fully, please have at least three people submit detailed letters of reference, and also include information about the contents of the courses you have taken.

Our department is advertising postdoctoral positions this year. Applicants interested in homotopy theory, (homotopy) type theory, modular representation theory, or other areas that I am interested in are especially encouraged to apply and to mention my name.

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.

Recent Teaching

Winter 2016 Algebraic Topology, Math 4152b/9052b.
Fall 2014 Linear Algebra I, Math 1600a.
Summer 2014 Representation Theory, Math 9140a.
Winter 2014 Linear Algebra I, Math 1600b.
Fall 2013 Linear Algebra I, Math 1600a.
Algebraic Topology, Math 4152a/9052a.
Full list of courses taught at UWO.


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.

If you find math fun, consider becoming a math major. Talk to me or anyone else in the department if you're curious.

Some thoughts on investment strategies.

How to get to London, Ontario, and where to stay.

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

Contact information
Dan Christensen

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

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

E-mail: j d c at u w o . c a     


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