### Description

A group blog on math, physics and philosophy

### The n-Category Café's Latest Posts

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How to define the structure of

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You can join a workshop on entropy and information in biological systems, virtually, by watching the streaming video.

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1. Reflexive completion. 2. Mathematicians accepting and declining overtures from GCHQ. 3. The Euler characteristic of an algebra. 4. Review of Nick Gurski's higher categories book. 5. Are lectures the best way to teach?

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