A head-shot of me near the southern Oregon coast

Theo Johnson-Freyd

PhD, Mathematics, UC Berkeley

Beginning Fall 2013, I will be an NSF Postdoctoral Fellow and Boas Assistant Professor at Northwestern University.

e-mail: theojf at math dot northwestern dot edu
Office: 1065 Evans Hall, Berkeley, CA, 94720

Contents

Curriculum Vitae (PDF)


Research

My primary research interests are in mathematical physics, focusing on quantum field theory, and specifically perturbative quantization and path integrals and so on. I am also very interested in questions in category theory and representation theory. My adviser is Nicolai Reshetikhin.

My papers and preprints include:

I have also given many talks on these and related subjects.

One of my more satisfying activities is that I am a reviewer for MathReviews. Of my reviews, two appeared in the September 2012 print addition: MR2742432 (2012i:55005): Stolz and Teichner, Supersymmetric field theories and generalized cohomology, 2011 and MR2752518 (2012i:81001): Baez and Lauda, A prehistory of n-categorical physics, 2011.

If you are curious, you can read the syllabus for my Qualifying Exam (11 June 2009).


Talks and Seminars

I co-organize with Harold Williams the Geometry, Representations, And Some Physics student seminar, which meets Fridays, 2—3, in 939 Evans.

Some talks I have given are listed below. You can open all abstracts or close all abstracts if you like.

2013

2012

2011

2010

2009

2008

2007


Class Notes

I occasionally "Live-TeX" notes from my classes and lectures. As with any notes, mine are replete with omissions and errors, undoubtedly; typing does allow me to catch questions from the audience and jokes from the professors, so these are included as well. Needless to say, anything good about the notes, and in particular presentation of the mathematical material, is due to the professor of the class. Anything bad about them, and in particular every inaccuracy, is mine. Use them with care. Also, please e-mail me with corrections: typos are trivial to fix, and mathematical errors should not be allowed to propagate. I was inspired to start typing lecture notes after watching Anton Geraschenko do it, and appreciate his advice.

Please note that the TAR.GZ files include TeX sources and plenty of other detritus: auxiliary files, partly completed problem sets, etc. You are welcome to download them, but I make no promises that the files will load on your computer: that will depend on whether your TeX installation exactly matches mine.


Teaching

I have taught the following classes at UC Berkeley:

I have also guest-taught three days of Math 185 (Complex Analysis), three days of Math 32 (Precalculus), and three days of Math 1B (Second-semester calculus), and I have given many short classes at Canada/USA Mathcamp.


Non-math

My husband and I are avid cooks. For a while we collected recipes and discussions at Local Seasoning. We are on hiatus right now, but may start up again. I recommend that you use an RSS reader, so that if we do have new posts, you'll see them, but don't have to regularly check.

In a previous life, I was a kitchen manager at Columbae House, at Stanford University. Around the same time, I was also a dancer, and I choreographed the Opening Committee performance for the 2007 Stanford Viennese Ball (video).


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