Where I live and how to reach me.

• Office (United States)
  Department of Mathematical Sciences
  Carnegie Mellon University
  5000 Forbes Avenue
  Pittsburgh, PA 15217
  (+1) (412) 268-3337
  rvirga+@cs.cmu.edu

• Home (United States)
  401 Amberson Avenue, Apt. 250
  Pittsburgh, PA 15232
  (+1) (412) 802-7925
  rvirga@bellatlantic.net

• Home (Italy)
  Via Giovan Battista Piranesi 69
  20117 Milano ITALY
  (+39) (02) 714012