*Wednesday 26th February*–

*Wednesday 26th February 2020*

26th February 2020

University of Bristol

We are delighted to welcome Imre Leader to the University of Bristol to deliver a Heilbronn Colloquium.

**Title:** **Partition Regular Equations**

**Abstract:** A finite or infinite matrix M is called ‘partition regular’ if whenever

the natural numbers are finitely coloured there exists a monochromatic

vector x with Mx=0. Many of the classical results of Ramsey theory, such

as van der Waerden’s theorem or Schur’s theorem, may be naturally rephrased

as assertions that certain matrices are partition regular.

While the structure of finite partition regular matrices is well understood,

little is known in the infinite case. In this talk we will review some known

results and then proceed to some recent developments.

The talk will not assume any previous knowledge of the area.

The colloquium will take place in Lecture theatre 2.41, Fry Building at 16:00-17:00 followed by a wine reception in the Fry Common room.

If you would like to attend the talk, please register by filling in this short registration form.

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