TAILIEUCHUNG - Báo cáo: Some Weighted Hardy-Type Inequalities on Anisotropic Heisenberg Groups

Hindawi Publishing Corporation Journal of Inequalities and Applications Volume 2011, Article ID 924840, 10 pages doi: Research Article Some Weighted Hardy-Type Inequalities on Anisotropic Heisenberg Groups Bao-Sheng Lian,1 Qiao-Hua Yang,2 and Fen Yang1 1 2 College of Science, Wuhan University of Science and Technology, Wuhan 430065, China School of Mathematics and Statistics, Wuhan University, Wuhan 430072, China Correspondence should be addressed to Bao-Sheng Lian, lianbs@ Received 9 December 2010; Accepted 4 March 2011 Academic Editor: Matti K. Vuorinen Copyright q 2011 Bao-Sheng Lian et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction. | Hindawi Publishing Corporation Journal of Inequalities and Applications Volume 2011 Article ID 924840 10 pages doi 2011 924840 Research Article Some Weighted Hardy-Type Inequalities on Anisotropic Heisenberg Groups Bao-Sheng Lian 1 Qiao-Hua Yang 2 and Fen Yang1 1 College of Science Wuhan University of Science and Technology Wuhan 430065 China 2 School of Mathematics and Statistics Wuhan University Wuhan 430072 China Correspondence should be addressed to Bao-Sheng Lian lianbs@ Received 9 December 2010 Accepted 4 March 2011 Academic Editor Matti K. Vuorinen Copyright 2011 Bao-Sheng Lian et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. We prove some weighted Hardy type inequalities associated with a class of nonisotropic Greiner-type vector fields on anisotropic Heisenberg groups. As an application we get some new Hardy type inequalities on anisotropic Heisenberg groups which generalize a result of Yongyang Jin and Yazhou Han. 1. Introduction The Hardy inequality in RN states that for all u e C RN and N 3 f Vu 2dx N -2 f dx. . N 4 RN x 2 In the case of the Heisenberg group H Garofalo and Lanconelli cf. 1 firstly proved the following Hardy inequality 2 Q - 2 u IV 1 2 - u 2 V d H 4 H d u e C H e where e is the neutral element of H d z 4 t2 1 4 is the Koranyi-Folland nonisotropic gauge induced by the fundamental solution and Q 2n 2 is the homogenous dimension of H see also 2 . Inequality was generalized by Niu et al. 3 see also 4 using the 2 Journal of Inequalities and Applications Picone-type identify. For more Hardy-Sobolev inequalities on nilpotent groups we refer the reader to 5-19 . More recently Jin and Han cf. 20 21 using the method by Niu et al. 3 have proved the following Hardy inequalities on anisotropic Heisenberg groups H .n p 2 . n k-1 p j aj zj I2 j ajz I2 I VLU -

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