Leonard E. Gillman (January 8, 1917 – April 7, 2009) was an American mathematician, emeritus professor at the University of Texas at Austin.
He moved to Washington, D.C. where he continued doing Navy work for the Operations Evaluation Group (OEG), affiliated with the Massachusetts Institute of Technology.
With no specialists to advise him, Gillman wrote and published a paper that became his thesis: "On Intervals of Ordered Sets".
In 1958, Gillman was awarded a Guggenheim Fellowship,[3] and he spent the next two years as a visiting member at the Institute for Advanced Study.
He was active in recruiting top mathematicians to the department, including Arthur Harold Stone and his wife Dorothy Maharam.
In 1969 he was appointed a regional Associate Secretary of the American Mathematical Society, but he had to give it up after moving to the University of Texas that same year.
[6] Gillman was involved in local classical music everywhere he worked, and performed four times at the Joint Mathematics Meeting, twice with William Browder.