### Description

A group blog on math, physics and philosophy

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

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Yet another place where the concept of magnitude turns up: the statistical notion of effective sample size.

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Qiaochu Yuan joins us as a host of the Café.

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The legacy of Alan Turing's work at Bletchley Park (later GCHQ).

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Why there are 270 rescaled copies of the first shell of the E8 lattice sitting in the second shell.

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In search of a categorical interpretation of the proof of the Cantor--Schroeder--Bernstein theorem.

### Tags