Charlotte Scott Centre for Algebra

School of Mathematics & Physics, University of Lincoln

Algebra Seminar by Alan Logan

On Wednesday the 27th of October 2021, Alan Logan (Heriot-Watt University, Edinburgh) will be giving an online seminar on his research at 3pm. The details of his talk are as follows:

Title: The conjugacy problem for ascending HNN-extensions of free groups.

Abstract: The conjugacy problem is one of the three Fundamental Problems for groups, as posed by Dehn over 100 years ago. It is undecidable in general, but known to be decidable for many important classes of groups including free-by-cyclic groups. In this talk, I will explain my proof of the decidability of the conjugacy problem for ascending HNN-extensions of free groups. This class of groups generalises free-by-cyclic groups, and I will draw parallels, and explain the differences between the two settings.

One comment on “Algebra Seminar by Alan Logan

  1. Evgeny Khukhro
    October 15, 2021

    Reblogged this on Maths & Physics News.


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.


This entry was posted on October 14, 2021 by in research, Seminar, Visitors.

Blog Stats

  • 39,930 hits


%d bloggers like this: