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**Category Theoretical Reflections on the Foundations of Physics**

**Philosophy of Science Meeting**

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Montreal

A symposium presented at the PSA 2010, organized by Steve Awodey and Hans Halvorson.

Bob Coecke (Computer Science, Oxford University), "Quantum Picturalism".

Klaas Landsman (Physics, Radboud University), "Topos Theory and the Copenhagen Interpretation of Quantum Mechanics".

Jeffry Morton (Mathematics, University of Lisbon), "Groupoidification in Physics" (longer notes).

Gonzalo Reyes (Mathematics, University of Montreal), "From Laws of Motion to Vacuum field Equations".