Speaker
Prof.
Paul Fabel
(Mississippi State University)
Description
It is a well established but highly nontrivial fact that planar sets are aspherical (Zastow, Cannon/Conner/Zastrow ).
We discuss another relatively simple and canonical strategy to prove planar sets are aspherical, employing projections
of Hadamard spaces, realized as universal covers of PL planar compacta.
Primary author
Prof.
Paul Fabel
(Mississippi State University)
