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.[1] He is the leader[clarification needed] of College Mathematics[citation needed] in Maryland,[clarification needed] 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.