tailieunhanh - Báo cáo hóa học: "ON MULTIPLE HARDY-HILBERT INTEGRAL INEQUALITIES WITH SOME PARAMETERS'

ON MULTIPLE HARDY-HILBERT INTEGRAL INEQUALITIES Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: WITH SOME PARAMETERS | ON MULTIPLE HARDY-HILBERT INTEGRAL INEQUALITIES WITH SOME PARAMETERS HONG YONG Received 19 April 2006 Revised 30 May 2006 Accepted 5 June 2006 By introducing some parameters and norm x a x e R we give multiple Hardy-Hilbert integral inequalities and prove that their constant factors are the best possible when parameters satisfy appropriate conditions. Copyright 2006 Hong Yong. 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. 1. Introduction If p 1 1 p 1 q 1 f 0 g 0 0 c fp x dx TO 0 J0 gq x dx TO then we have the well-known Hardy-Hilbert inequality see 4 rc 0 f x g x x y dxdy n sin n p r rc 1 p rc 1 q fp x dx gq x dx 00 where the constant factor n sin n p is the best possible. Its equivalent form is n r 6A xpdy r_ -ip r f x dx Jo 0 x y sin n p 0 J where the constant factor n sin n p p is also the best possible. Hardy-Hilbert inequalities are important in analysis and in their applications see 7 . In recent years many results see 1 3 8-10 have been obtained in the research of Hardy-Hilbert inequality. At present because of the requirement of higher-dimensional harmonic analysis and higher-dimensional operator theory multiple Hardy-Hilbert integral inequalities are researched see 5 6 11 . Yang 11 obtains the following if a e R n 2 pi 1 i 1 2 . n s 1 1 pi 1 A n - min1 i pi fi 0 and Hindawi Publishing Corporation Journal of Inequalities and Applications Volume 2006 Article ID 94960 Pages 1-11 DOI JIA 2006 94960 2 Multiple Hardy-Hilbert integral inequalities 0 Ị t - a n-1-Afp t dt TO i 1 2 . n then rc a ro 1 n - n ----------n fi xi dx1 .dxn 1n rA n r n A pi - w 1 pi t a n 1 AfP t dt a where the constant factor 1 r A nn 1 r 1 - n - A pi is the best possible. In this paper by introducing some parameters and norm x a x e Rn we give multiple Hardy-Hilbert integral inequalities and discuss the .

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