- Series
- Time
- Tuesday, March 7, 2023 - 3:45pm for 1 hour (actually 50 minutes)
- Location
- Skiles 005
- Speaker
- Daniel Cranston – Virginia Commonwealth University – dcranston@vcu.edu – https://www.people.vcu.edu/~dcranston/
- Organizer
- Tom Kelly
A \emph{list assignment} gives to each vertex in a graph a
list of
allowable colors. An \emph{-coloring} is a proper coloring such that
for all . An \emph{-recoloring move} transforms
one -coloring to another by changing the color of a single vertex. An
\emph{-recoloring sequence} is a sequence of -recoloring moves. We study
the problem of which hypotheses on and imply that for that every pair
and of -colorings of there exists an -recoloring
sequence that transforms into . Further, we study bounds on
the length of a shortest such -recoloring sequence.
We will begin with a survey of recoloring and list recoloring problems (no prior
background is assumed) and end with some recent results and compelling
conjectures. This is joint work with Stijn Cambie and Wouter Cames van
Batenburg.