Dan Christensen

Dan Christensen

I am a Professor in the Department of Mathematics at The University of Western Ontario in London, Ontario, and am an Affiliate Member of the Perimeter Institute for Theoretical Physics. The Department of Mathematics is part of the School of Mathematical and Statistical Sciences.

I am the Editor-in-Chief of Homology, Homotopy and Applications.

I am a co-organizer of the Homotopy Type Theory Electronic Seminar Talks.

My papers, preprints and talks.

Contact information is below.

Research

My research interests include algebraic topology (especially stable homotopy theory and model categories), homotopy type theory and univalent foundations, category theory (especially higher categories), derived categories, modular representation theory, mathematical physics (quantum gravity), and computation.

Research group

Dan Christensen (faculty)
Thomas Thorbjørnsen (Ph.D. student, Sept 2023 until present)
Sebastian Gómez Rendón (M.Sc. student, Sept 2023 until present)

Graduate students: I am looking for new graduate students in the areas of homotopy theory, homotopy type theory and topology, broadly construed. 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.

Postdocs: I encourage eligible people to apply for an NSERC Postdoctoral Fellowship, an NSERC Banting Postdoctoral Fellowship (domestic and international applicants eligible), any other NSERC postdoc, an NSF PDF, or similar to be held at Western. The standard NSF postdocs can be held in Canada, and there are other eligible NSF postdocs, e.g. an International Research Fellowship Program postdoc or a Mathematical Sciences Postdoctoral Research Fellowships.

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

    group photo
Group photo, July 2021
Links:     tet plot
What's this?

Recent Teaching

Fall 2024 Homotopy Type Theory, Math 9501a.
Linear Algebra, Math 1600a.
Summer 2024 Representation Theory, Math 9140a.
Summer 2023 Mathematical Computation, Math 9171a.
Full list of courses taught at UWO.

Other

I'm on Mathstodon/Mastodon.

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.

Here are some photos from trips I have been on.

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

      polynomial roots
I've produced 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
Canada

Office: MC130
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     

Image credit: Mitch Zimmer, 2023

 

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