You may call me at (301) 405-5166 or reach me by email at jmr@math.umd.edu. I usually attend the Geometry/Topology Seminar (Mondays 3-4), the Algebra/Number Theory and Representation Theory Seminars (Mondays and Wednesdays 2-3), the Departmental Colloquium (Wednesdays 3:15-4:15), and the Geometry and Physics RIT (Thursdays 3:30-5). My office hours (Spring 2023) are Mondays, Wednesdays 10-11 in room MTH 2114, or by appointment.