Theo JohnsonFreyd
I am a recent graduate from UC Berkeley. Starting Fall 2013, I am a Boas Assistant Professor at Northwestern University. My research is broadly centered on quantum field theory — my interests include category theory, representation theory, homological algebra, algebraic topology, Poisson geometry, and theoretical physics.
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 math.berkeley.edu/~theojf
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 89Why worry about the axiom of choice?
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 43What is the symbol of a differential operator?
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