This is a participatory learning seminar on the interface between geometry (differential and algebraic), topology (geometric and algebraic), and theoretical physics (including high energy physics and condensed matter theory).Â This is one of the most active areas of mathematics and mathematical physics and a great way to find out about current research.Â Â Â Course credit is available for undergraduates (via the course number MATH489) or grad students (via the course numbers MATH689, or AMSC689).