Dat Phung To studied mathematics at Saigon University and is a mathematics enthusiast. A native of South Vietnam, he earned the rank of major in the South Vietnamese Air Force during the Vietnam Wa...view moreDat Phung To studied mathematics at Saigon University and is a mathematics enthusiast. A native of South Vietnam, he earned the rank of major in the South Vietnamese Air Force during the Vietnam War before being imprisoned by the communists for almost ten years. He moved to the United States in 1991 via a refugee program and lives with his family in New Jersey.view less