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By putting this question on the home page , constituents can avoid searches or hunting around the site for basic needs . His contributions to the development of mathematics include work in the areas of calculus of variation , conformal mapping , minimal surfaces , complex functions , area theory , Riemann surfaces , and plateau problems . Graph theory , the branch of mathematics which studies arrays of points and their connections , has proved to be a useful tool in analyzing and designing such networks . CRS Report " Telework in the Federal Government : Background , Policy , and Oversight " clearly outlines the official House and Senate policies on telecommuting . We feel this is due in part to the efforts of our faculty working with schools throughout the state ( see the related article on page 6 ) . In 1935 , Ross joined the faculty of St. Louis University where he remained until 1946 when he became professor and chairman of the Mathematics Department at the University of Notre Dame .