# What is...?

## Idea

The Notices of the AMS contain a regular column “What is ...?” which gives a brief explanation of a mathematical notion, including its motivation and its interest for various fields of mathematics. Each contribution is limited to 2 pages. Here a list of more than 110 such contributions can be found. In the context of the ZMP seminar, we want to use a format of short contributions of 15 minutes to explain notions from mathematics, mathematical physics and physics.

## Upcoming what is ...?

- ... a conformal block. 7 November 2024, Volker Schomerus