Algebraic Graph Theory Seminar - Jozef Širáň (6.5.2022)

Friday 6.5.2022 at 13:00, Lecture room M/X (online too)

04. 05. 2022 14.46 hod.
By: Martin Mačaj

Jozef Širáň (Slovak University of Technology):
Why are there no regular maps on a Klein bottle?

AGT in Bratislava team, scheduled meeting

Abstract:
We give three answers to the question in the title, with the help of double covers, the Riemann-Hurwitz formula, and homology.

Thanks to (temporary?) loosening of restrictions regarding the COVID epidemy, we intend to conduct the seminar meetings this semester `in-person'. Hence, all of you who might choose to attend in person are welcome. Those of you who are not able to attend in person or who are still uncertain about the safety of attending in person are welcome to attend via MS Teams. In either case, we hope to see as many of you as possible (either in person or virtually) at our Friday gatherings.