The following notes are from the Ramsey DocCourse in Prague 2016. The notes are taken by me and I have edited them. In the process I may have introduced some errors; email me or comment below and I will happily fix them.

**Special thanks** to Ivan Khatchatourian for some elaborations.

**Title**: Ramsey and Ultrafilters 2 (of 2)

**Lecturer**: Slawomir Solecki

**Date**: Friday October 21, 2016.

**Main Topics**: Abstraction of Gowers/Lupini/Furstenberg-Katznelson, worked example with Furstenberg-Katznelson, slides about tensors

**Definitions**: Forestation of a Poset, Semigroup generated by a poset, [Specific to these constructions],

Lecture 1 – Lecture 2

These two lectures are based on the following 2016 paper of Solecki: “Monoid actions and ultrafilter methods in Ramsey theory”.

Continue reading Ramsey and Ultrafilters 2 – Ramsey DocCourse Prague 2016