Tobias Fritz

Welcome to my page. I am a mathematician at the Perimeter Institute in Waterloo, Ontario. My work deals with identifying and exploiting previously unrecognized mathematical structures in various contexts. So far, I have mostly done this for mathematical aspects of quantum theory, but a diverse background in mathematics, theoretical physics and computer science enables me to do this more generally. So if unclear mathematical structures pop up in your research and you would like help in understanding them better, please get in touch!

Papers and preprints

Teaching

Notes and Slides from Talks

• Characterizations of Shannon and Rényi entropy.
• Characterizing Entropy (slides of John Baez with minor modifications).
• Equality.
• A Combinatorial Approach to Nonlocality and Contextuality.
• Bell's Theorem on arbitrary causal structures.
• Resources.
• Turning Weyl's tile argument into a no-go theorem.
• Quantum correlations and group C*-algebras.
• Witnessing Infinite-dimensional State Spaces.
• Horn Formulas as Linear Inequalities and Nonlocality Paradoxes.
• Tsirelson's problem and Kirchberg's conjecture.
• Cuntz' proof of Bott periodicity for C*-algebras.
• Quantum correlations and group C*-algebras.
• Curious properties of iterated measurements.
• Abstract Convexity: Results and Speculations.
• Abstract Convexity.
• The Geometry of the Standard Model.
• The Geometry of Black Holes.

• Himmelsmechanik.
• Verschränkung und Verschränkungsmaße.
• Episodengedächtnis bei rabenartigen Vögeln.
• Evolutionäre Algorithmen.

Essays

• Quantum Graphenity.
• Possibilitistic Physics.

Event Calendar

• 2015 Sep 9–: Max Planck Institute for Mathematics in the Sciences, Leipzig.
• 2015 Sep 28–Oct 2: New Spaces in Mathematics & Physics, Paris.
• 2015 Oct 28–30: Geometric Science of Information, Paris.