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《JOURNAL OF BEIJING NORMAL UNIVERSITY(NATURAL SCIENCE)》 1998-01
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ON THE SCHUR-CONCAVITY OF HOMOGENEOUS POLYNOMIAL FUNCTIONS

LeI Tiangang;Qiu Jingliang (Department of Mathematics, Beijing Normal Unirersity, 100875. Beijing, China;Elementary Department, Beijing Information Technology Institute, 100101, Beijing, China)  
Necessary and sufficient conditions for homogeneous polynomial functions of n variables of degree m with m odd, m=2 or m=4 to be Schur-concave on Rn are given.
【Fund】: 国家自然科学基金!19671013
【CateGory Index】: O151.25
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