John McCleary - Unstable Homotopy Theory Conference 2009

"On Borsuk-Ulam Phenomena"

The classical Borsuk-Ulam theorem provides conditions when
an equivariant mapping of a certain sort fails to exist.
Combinatorial problems are sometimes formulated by constructing
a mapping from a configuration space to a test space with
symmetries. If the mapping fails to exist, a coincidence occurs
that solves the combinatorial problem. In this talk, I will
show a rich source of theorems of this type where the test
space is the complement of an arrangement.

Category:

Science & Technology

Tags:

• John
• McCleary
• Unstable
• Homotopy
• Theory
• Conference
• 2009