Notes

Below are links to course notes for the minicourses of the Simons Semester on Geometric and Analytic Group Theory held in 2019 at IMPAN in Warsaw. Any mistakes in the notes below are not due to the speakers.

• 04.16–04.18: Yves Cornulier, Near actions

• Notes provided by Yves Cornulier. Handwritten notes were initially taken by Piotr Rudnicki.

• 04.23–04.25: Michael W. Davis, Examples of nonpositively curved cube complexes

  • Notes on CAT(0) cube complexes

  • Notes on polyhedral products

  • Notes on Bestvina-Brady groups

  • Notes on hyperbolization

• 04.30–05.02: Jon McCammond, Braid groups and non-positive curvature

• Notes (next to the Cartan-Hadamard theorem is a non-example - X is not complete)

  • Note taker: Mikołaj Czapp

• 05.07 - 05.09, 05.14–05.16: Victor Chepoi, Helly graphs and Helly groups

  • Lecture 1

  • Lecture 2

  • Lecture 3

  • Lecture 4

  • Note taker: Suraj Krishna

• 05.14–05.16: Denis Osin, Acylindrically hyperbolic groups

• Lecture 1

• Lecture 2

• Lecture 3

  • Note taker: Suraj Krishna

• 05.28–05.30: Daniel T. Wise, An invitation to coherent groups

• Part 1

• Part 2

  • Note taker: Piotr Rudnicki

• 06.04–06.06: Roman Sauer, Introduction to L2–Betti numbers

• Lecture 1

  • Note taker: Mikołaj Czapp

  • Lecture 1

  • Lecture 2

  • Courtesy of Roman Sauer

• 06.11–06.13: Uri Bader, Algebraic Representations of Ergodic Actions

  • Note taker: Piotr Rudnicki

• 06.18–06.20: Aaron Brown, Smooth ergodic theory and rigidity of lattice actions

  • Note taker: Mikołaj Czapp