tailieunhanh - Báo cáo hóa học: " A Caccioppoli-type estimate for very weak solutions to obstacle problems with weight"

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : A Caccioppoli-type estimate for very weak solutions to obstacle problems with weight | Hongya and Jinjing Journal of Inequalities and Applications 2011 2011 58 http content 2011 1 58 3 Journal of Inequalities and Applications a SpringerOpen Journal RESEARCH Open Access A Caccioppoli-type estimate for very weak solutions to obstacle problems with weight Gao Hongya 1 and Qiao Jinjing1 2 Correspondence hongya-gao@ 1College of Mathematics and Computer Science Hebei University Baoding 071002 People s Republic of China Full list of author information is available at the end of the article Abstract This paper gives a Caccioppoli-type estimate for very weak solutions to obstacle problems of the A-harmonic equation divA x Vu 0 with A x ệ w x p-1 where 1 p and w x be a Muckenhoupt A1 weight. Mathematics Subject Classification 2000 35J50 35J60 Keywords Caccioppoli-type estimate very weak solution obstacle problem Mucken-houpt weight A-harmonic equation 1 Introduction Let w be a locally integrable non-negative function in Rn and assume that 0 w almost everywhere. We say that w belongs to the Muckenhoupt class Ap 1 p or that w is an Ap weight if there is a constant Ap w such that sup B i f wdx f B B B f w1 1 p dx B p-1 Ap w X for all balls B in Rn. We say that w belongs to A1 or that w is an A1 weight if there is a constant A1 w such that i wdx A1 w essinfBw B B for all balls B in Rn. As customary p stands for the measure whose Radon-Nikodym derivative w is ịẫ. E ị wdx. E It is well known that A1 c Ap whenever p 1 see 1 . We say that a weight w is doubling if there is a constant C 0 such that p 2B Cp B whenever B c 2B are concentric balls in Rn where 2B is the ball with the same center as B and with radius twice that of B. Given a measurable subset E of Rn we will denote by Lp E w 1 p the Banach space of all measurable functions f defined on E for which Springer 2011 Hongya and Jinjing licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License .

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