About Sidney Lewis "Denny" Gulick, III
Denny Gulick, born Sidney Lewis Gulick III, is a professor of mathematics at University of Maryland, College Park.
Gulick obtained his PhD from Yale University, with his main interest of operator theory. He is the leader of College Mathematicians in Maryland, and is active in statewide college education and policies.
He has written several textbooks, including Encounters with Chaos (1992) and six editions of Calculus with Analytic Geometry, with Robert Ellis. His grandfather Sidney Lewis Gulick (1860–1945) was missionary to Japan, and great-great-grandfather Peter Johnson Gulick (1796–1877) missionary to the Kingdom of Hawaii.