sentences:  He is currently the Thomas Jefferson Professor of Mathematics at the University of Virginia, the Asa Griggs Candler Professor of Mathematics at Emory University, the Vice President of the American Mathematical Society, and the Chair of the Mathematics Section in the American Association for the Advancement of Science.Ono is the son of mathematician Takashi Ono, who emigrated from Japan to the United States after World War II.His older brother, immunologist and university president Santa J. Ono, was born while Takashi Ono was in Canada working at the University of British Columbia, but by the time Ken Ono was born the family had returned to the US for a position at the University of Pennsylvania.