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Xin-Min Zhang received his undergraduate education in China, and received the M.S. and Ph.D. in mathematics from the University of Massachusetts at Amherst. Since 1990, he has been teaching at the University of South Alabama where he is now an associate professor. His research interests have been focused on geometry, topology, and inequality theory. L. Richard Hitt received his B.S., M.S., and Ph.D. from Florida State University. He is a professor of mathematics at the University of Southdoi:10.1007/s000170050086 fatcat:mmjgo72o2fbufklqyklj6jcqw4