Event time:
Monday, February 21, 2005 - 10:00am to 11:00am
Location:
215
Speaker:
Paul Hacking
Speaker affiliation:
Yale University
Event description:
Given a closed subvariety of an algebraic torus, the associated
tropical variety is a polyhedral fan in the space of 1-parameter subgroups of the torus which describes the behaviour of the subvariety at infinity. We give a geometric interpretation of the tropical variety (following E. Tevelev) and, at least in generic cases, we show that the link of the origin has only top rational homology.