نتایج جستجو برای: ü

تعداد نتایج: 1944  

2009
LI-LI WAN

The existence of homoclinic orbits is obtained for a class of the second order Hamiltonian systems ü(t)−L(t)u(t)+∇W (t,u(t)) = 0, ∀t ∈ R , by the mountain pass theorem, where W(t,x) needs not to satisfy the global (AR) condition. Mathematics subject classification (2000): 34C37, 37J45, 47J30, 58E05.

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2014
S. Missall M. Welp N. Thevs A. Abliz Ü. Halik

S. Missall, M. Welp, N. Thevs, A. Abliz, and Ü. Halik Faculty of Forest and Environment, Eberswalde University for Sustainable Development, Eberswalde, Germany Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany Key Laboratory of Oasis Ecology, College of Resources and Environmental Sciences, Xinjiang University, Urumqi, China Faculty of Mathematics and Geog...

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Journal: :Mathematical and Computer Modelling 2007
Xian Wu Shaoxiong Chen Fukun Zhao

In the present paper, the non-autonomous second order Hamiltonian systems { ü(t) = ∇F(t, u(t)), a.e. t ∈ [0, T ] u(0)− u(T ) = u̇(0)− u̇(T ) = 0, (1) are studied and a new existence theorem and a new multiplicity theorem of periodic solutions are obtained. c © 2007 Elsevier Ltd. All rights reserved.

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Journal: :Mediterranean Journal of Humanities 2012

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Journal: :Orientalistische Literaturzeitung 1915

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Journal: :RumeliDE Dil ve Edebiyat Araştırmaları Dergisi 2019

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Journal: :Journal of Turkish Research Institute 2009

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Journal: :SÖYLEM Filoloji Dergisi 2018

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Journal: :Journal of Turkish Research Institute 2009

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Journal: :Journal of International Scientific Researches 2017

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