\magnification=1200 \baselineskip=20pt \nopagenumbers \font\big=cmr12 scaled \magstep2 \centerline{\bf STANFORD UNIVERSITY} \centerline{\bf DEPARTMENT OF STATISTICS} \centerline{\big JOINT STATISTICS/BIOSTATISTICS SEMINAR} \bigskip \baselineskip=12pt \centerline{4:15 p.m., Tuesday, March 29, 2004} \centerline{Sequoia Hall Room 200} \centerline{(Cookies at 3:45 in 1st Floor Lounge)} \bigskip \baselineskip=15pt \centerline{\sl Bernd Sturmfels} \centerline{\sl UC Berkeley} \bigskip \centerline{\bf Phylogenetic Invariants} \bigskip Abstract: There has been considerable recent progress in understanding the polynomial equations which describe statistical models of evolution. We discuss these polynomials and their applications for the general Markov model on a tree, and for a class of phylogenetic models (Jukes-Cantor, Kimura) which are widely used in computational biology. Joint work with Seth Sullivant. \bye