Some new refined multidimensional Hardy-type inequalities for p <= 2 and their duals are derived and discussed. Moreover, these inequalities hold in the reversed direction when 1 < p <= 2. The results obtained are based mainly on some new results for superquadratic and subquadratic functions. In particular, our results further extend the recent results in [J.A. Oguntuase and L.-E. Persson, Refinement of Hardy's inequalities via superquadratic and subquadratic functions, J. Math. Anal. Appl., 339 (2008), no. 2, 1305- 1312] to a multidimensional setting.
机构:
North China Elect Power Univ, Coll Sci & Technol, Baoding 071051, Hebei, Peoples R ChinaNorth China Elect Power Univ, Coll Sci & Technol, Baoding 071051, Hebei, Peoples R China
Tian, Jingfeng
Zhou, Yang-Xiu
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机构:
North China Elect Power Univ, Coll Sci & Technol, Baoding 071051, Hebei, Peoples R ChinaNorth China Elect Power Univ, Coll Sci & Technol, Baoding 071051, Hebei, Peoples R China
机构:
School of Mathematical Sciences, Beijing Normal University
Laboratory of Mathematics and Complex Systems, Beijing Normal University, Ministry ofSchool of Mathematical Sciences, Beijing Normal University
机构:
Beijing Normal Univ, Sch Math Sci, Beijing 100875, Peoples R China
Beijing Normal Univ, Lab Math & Complex Syst, Minist Educ, Beijing 100875, Peoples R ChinaBeijing Normal Univ, Sch Math Sci, Beijing 100875, Peoples R China