tailieunhanh - Báo cáo hóa học: " Research Article Maximum Principles and Boundary Value Problems for First-Order Neutral Functional Differential Equations"

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: Research Article Maximum Principles and Boundary Value Problems for First-Order Neutral Functional Differential Equations | Hindawi Publishing Corporation Journal of Inequalities and Applications Volume 2009 Article ID 141959 26 pages doi 2009 141959 Research Article Maximum Principles and Boundary Value Problems for First-Order Neutral Functional Differential Equations Alexander Domoshnitsky Abraham Maghakyan and Roman Shklyar Department of Mathematics and Computer Science Ariel University Center of Samaria Ariel 44837 Israel Correspondence should be addressed to Alexander Domoshnitsky adom@ Received 11 April 2009 Revised 25 August 2009 Accepted 3 September 2009 Recommended by Marta A D Garcia-Huidobro We obtain the maximum principles for the first-order neutral functional differential equation Mx t x t - Sx t - Ax f Bx f f f t e 0 w where A C 0 ff 0 z B C 0 w Lpw and S -Lp j 0M are linear continuous operators A and B are positive operators C 0 is the space of continuous functions and Lp is the space of essentially bounded functions defined on 0 w New tests on positivity of the Cauchy function and its derivative are proposed. Results on existence and uniqueness of solutions for various boundary value problems are obtained on the basis of the maximum principles. Copyright 2009 Alexander Domoshnitsky 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. 1. Preliminary This paper is devoted to the maximum principles and their applications for first order neutral functional differential equation. Mx t x t - Sx t - Ax t Bx t f t t e 0 o where A Cm 1 Lm V B Cmw Lm V and S L 0w Lp are linear continuous 0x- . j Uwj Volterra operators the spectral radius p fS of the operator S is less than one C 0 is the space of continuous functions L 0 is the space of essentially bounded functions defined on 0 o . We consider with the following boundary condition lx c 2 Journal of Inequalities and Applications where l

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