Event Type:

Geometry-Topology Seminar

Date/Time:

Monday, January 25, 2021 - 12:00 to 12:50

Location:

Zoom. Please contact Christine Escher for a link.

Guest Speaker:

Stephen Wilson

Abstract:

A semiregular symmetry in a graph is a symmetry which moves all the vertices in cycles of

the same length. The ‘diagram' of such a symmetry has one ’node’ for each cycle and links

joining nodes, one for each orbit of edges joining vertices of those cycles.

We will see wht we can learn about the graph from the diagram, and how to re-construct

the graph from the diagram. We will discuss what makes a diagram ‘good’ and how to find

good diagrams.

Host: