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  1. By mixed monotone method, the existence and uniqueness are established for singular higher-order continuous and discrete boundary value problems. The theorems obtained are very general and complement previous ...

    Authors: Chengjun Yuan, Daqing Jiang and You Zhang

    Citation: Boundary Value Problems 2008 2008:123823

    Content type: Research Article

    Published on:

  2. We consider the existence of minimal and maximal solutions of periodic boundary value problems for first-order impulsive integrodifferential equations of mixed-type on time scales by establishing a comparison ...

    Authors: Yongkun Li and Hongtao Zhang

    Citation: Boundary Value Problems 2007 2007:073176

    Content type: Research Article

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  3. We prove a linear and a nonlinear generalization of the Lax-Milgram theorem. In particular, we give sufficient conditions for a real-valued function defined on the product of a reflexive Banach space and a nor...

    Authors: Dimosthenis Drivaliaris and Nikos Yannakakis

    Citation: Boundary Value Problems 2007 2007:087104

    Content type: Research Article

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  4. The aim of this article is to give an introduction to certain inequalities named after Carl Gustav Axel von Harnack. These inequalities were originally defined for harmonic functions in the plane and much late...

    Authors: Moritz Kassmann

    Citation: Boundary Value Problems 2007 2007:081415

    Content type: Research Article

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  5. This paper deals with boundary value problems for second-order differential equations with deviating arguments. Some sufficient conditions are formulated under which such problems have quasisolutions or a uniq...

    Authors: T Jankowski and W Szatanik

    Citation: Boundary Value Problems 2006 2006:23092

    Content type: Research Article

    Published on:

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