Under rapid periodic pacing, cardiac cells typicallyundergo a period-doubling bifurcation in which actionpotentials of short and long duration alternate with oneanother. If these action potentials propagate in a fiber, the short-longalternation may suffer abrupt reversals of phase at variouspoints along the fiber, a phenomenon called (spatially)...
Creator:
Schaeffer, David (Duke University)
Created:
2008-07-17
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Minnesota voters can appreciate the many troubling events associated with elections. Far more serious things can go wrong in the voting process, but most of us do not know how to look for them. The speaker exposes the many surprising problems that can occur in elections and explains how they are uncovered through the power of mathematics. Expect...
Creator:
Saari, Donald G. (University of California, Irvine)
Created:
2009-09-22
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.