Results 21 to 30 of about 36,323 (288)
Periodic solutions for a delay model of plankton allelopathy on time scales
Electronic Journal of Qualitative Theory of Differential Equations, 2011 In this paper, a delay model of plankton allelopathy is investigated. By using the coincidence degree theory, sufficient conditions for existence of periodic solutions are obtained.
Zhaohui Wen, Kejun Zhuang
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A Robust Approach to CCRM Interval Regression considering Interval Coincidence Degree [PDF]
Mathematical Problems in Engineering, 2021 Traditional CCRMs (Constrained Center-and-Range Methods) in solving the problem of interval regression could hardly make tradeoffs between the overall fitting accuracy and the coincidence degree between the observed and predicted intervals and could also hardly reduce the number of disjoint elements between the observed and predicted intervals, as well
Wang Yu, Yan Shilin
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Stability and Hopf-bifurcation analysis of an unidirectionally coupled system
Electronic Journal of Qualitative Theory of Differential Equations, 2011 In this paper, the stability and existence of periodic solutions for an unidirectionally coupled nonlinear system with delays are investigated by combining the linear stability theory and the embedding technique of asymptotically autonomous semiflows ...
Gang Zhu, Junjie Wei
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Existence Results for an m-Point Mixed Fractional-Order Problem at Resonance on the Half-Line
Axioms, 2022 This work considers the existence of solutions for a mixed fractional-order boundary value problem at resonance on the half-line. The Mawhin’s coincidence degree theory will be used to prove existence results when the dimension of the kernel of the ...
Ogbu F. Imaga +2 more
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An application of coincidence degree theory to cyclic feedback type systems associated with nonlinear differential operators [PDF]
, 2017 Using Mawhin's coincidence degree theory, we obtain some new continuation theorems which are designed to have as a natural application the study of the periodic problem for cyclic feedback type systems.
Zanolin, Fabio +3 more
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Degree, quaternions and periodic solutions [PDF]
, 2020 The paper computes the Brouwer degree of some classes of homogeneous polynomials defined on quaternions and applies the results, together with a continuation theorem of coincidence degree theory, to the existence and multiplicity of periodic solutions of
Mawhin, Jean
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非自治兔子食草模型的周期解(Periodic solutions of a nonautonomous plant-hare model)
Zhejiang Daxue xuebao. Lixue ban, 2012 Based on Mawhin's coincidence degree theory, sufficient conditions are obtained for the existence of at least one positive periodic solution for a plant-hare model.
GAOYong-fei(高永飞) +1 more
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A composite coincidence degree with applications to boundary value problems of neutral equations [PDF]
Transactions of the American Mathematical Society, 1993 The authors extend the notion of essential map and generalize the topological transversality theorem of Granas to the nonlinear problem \(L(I-B)(x)=G(x)\), where \(L\) is an unbounded Fredholm operator of index zero, \(B\) is condensing and \(G\) is \(L\)-compact. They also develop a topological degree theory to detect essential maps. Their topological
Erbe, L. H., Krawcewicz, W., Wu, J. H.
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Coincidence degree and periodic solutions of neutral equations
Journal of Differential Equations, 1974 The problem of existence of periodic solutions for some nonautonomous neutral functional differential equations is examined. It is an application of a basic theorem on the Fredholm alternative for periodic solutions of some linear neutral equations and of a generalized Leray-Schauder theory.
Hale, Jack K, Mawhin, J
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Solvability of integral boundary value problems at resonance in Rn $R^{n}$
Journal of Inequalities and Applications, 2019 Under a resonance condition involving integral boundary value problems for a second-order nonlinear differential equation in Rn $\mathbb{R}^{n}$, we show its solvability by using the coincidence degree theory of Mawhin and the theory of matrix ...
Shiying Song, Shuman Meng, Yujun Cui
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