Adin D. Falkoff has been a researcher at IBM since the 1950's. He worked with Ken Iverson from 1960 to 1980 on the development of the APL language, especially on the Formal Description of System/360 in APL. Kenneth E. Iverson (17 December 1920, Camrose, Alberta/Canada –October 19, 2004,Toronto, Ontario/Canada) was a computer scientist most notable for developing the APL programming language. ... APL (for A Programming Language, or sometimes Array Processing Language) is an array programming language invented in 1962 by Kenneth E. Iverson while at Harvard University. ...