The first part of the lecture introduces to basic combinatorial

sequences like binomial coefficients, partition numbers, or Stirling

numbers.

The main part of the lecture is devoted to the concept of group

actions. This fundamental concept, connecting algebra with

combinatorics, can be viewed as the basis of Polya's counting theory.

Typical applications, for instance, concern different colorings of the

cube, or determining the total number of molecular graphs of a

certain type (e.g., alcohols).

- Teacher: Ralf Hemmecke
- Teacher: Peter Paule