Seminar series
Date
Wed, 10 Mar 2021
10:00
10:00
Location
Virtual
Speaker
David Sheard
Organisation
UCL (LSGNT)
In the world of finitely generated groups, presentations are a blessing and a curse. They are versatile and compact, but in general tell you very little about the group. Tietze transformations offer much (but deliver little) in terms of understanding the possible presentations of a group. I will introduce a different way of transforming presentations of a group called a Nielsen transformation, and show how topological methods can be used to study Nielsen transformations.