 He is the creator and curator of the Annals of Irish Mathematics and Mathematicians.Mulcahy got his BSc and MSc in mathematical science at University College Dublin in 1978 and 1979, and a PhD from Cornell University in 1985 where his advisor was Alex F. T. W. Rosenberg.Since 1988 he has been teaching at Spelman College, in Atlanta, Georgia where he is currently professor.