Professor Giarrusso graduated from a small Jesuit liberal arts college in Syracuse as a math major and did graduate work in mathematics as an undergraduate at Syracuse University. He won a Woodrow Wilson Fellowship and National Science Foundation Fellowship and attended Yale university for his graduate studies. His thesis adviser was G.D. Mostow and his thesis area was discrete subgroups of Lie groups. Professor Giarrusso has been teaching at St. Lawrence since 1980.
Research interests include the connection between profinite groups and dynamics; specifically the holomorphic actions of Gal(Qbar,Q) on Julia sets and the Mandelbrot set.
He has taught the following course: MATH 110 Concepts of Math, MATH 135 Calculus I, MATH 205 Calculus III, MATH 206, Calculus IV, MATH 230 Differential Equations, MATH 316 Ring Theory