PhD seminar: Dehn twists and the mapping class group of surfaces

  • Date:
  • Location: Ångströmlaboratoriet, Lägerhyddsvägen 1
  • Lecturer: Sebastian Pöder
  • Contact person: Volodymyr Mazorchuk
  • Seminarium

Abstract:

It is a theorem of Lickorish that the mapping class group of a closed, oriented surface is generated by Dehn twists. In the talk we will define these notions and sketch Lickorish's 1961 proof.