Lloyd Lyne Dines (29 March 1885, in Shelbyville, Missouri – 17 January 1964, in Quincy, Illinois) was an American-Canadian mathematician, known for his pioneering work on linear inequalities.
in 1907 from Northwestern University[2] and Ph.D. in 1911 from the University of Chicago under Gilbert Bliss with thesis The highest common factor of a system of polynomials in one variable, with an application to implicit functions.
In 1932 he was an invited speaker at the International Congress of Mathematicians in Zürich.
From 1934 to 1945 he was a professor at the Carnegie Institute of Technology and chair of the mathematics department.
After his retirement in 1945, Dines held visiting professorships at the University of Saskatchewan, Smith College, and Northwestern University.