Results 41 to 50 of about 10,432 (131)

Existence and Stability of Periodic Solution to Delayed Nonlinear Differential Equations

open access: yesAbstract and Applied Analysis, 2014
The main purpose of this paper is to study the periodicity and global asymptotic stability of a generalized Lotka-Volterra’s competition system with delays.
Xiang Gu   +3 more
doaj   +1 more source

Existence and uniqueness results for the coupled systems of implicit fractional differential equations with periodic boundary conditions

open access: yesAdvances in Difference Equations, 2018
In this paper, we study the periodic boundary value problems for the coupled systems of fractional implicit differential equations. Basing on the coincidence degree theory, we establish the existence and uniqueness theorems.
Wei Zhang, Wenbin Liu, Tingting Xue
doaj   +1 more source

Dynamics of two-species delayed competitive stage-structured model described by differential-difference equations

open access: yesOpen Mathematics, 2019
Overf the last few years, by utilizing Mawhin’s continuation theorem of coincidence degree theory and Lyapunov functional, many scholars have been concerned with the global asymptotical stability of positive periodic solutions for the non-linear ...
Han Sufang   +4 more
doaj   +1 more source

Periodic Solutions of a Type of Liénard Higher Order Delay Functional Differential Equation with Complex Deviating Argument

open access: yesAbstract and Applied Analysis, 2012
The author has studied the existence of periodic solutions of a type of higher order delay functional differential equations with neutral type by using the theory of coincidence degree, and some new sufficient conditions for the existence of periodic ...
Haiqing Wang
doaj   +1 more source

Positive almost periodic solutions of non-autonomous delay competitive systems with weak Allee effect

open access: yesElectronic Journal of Differential Equations, 2009
By using Mawhin's continuation theorem of coincidence degree theory, we obtain sufficient conditions for the existence of positive almost periodic solutions for a non-autonomous delay competitive system with weak Allee effect.
Yongkun Li, Kaihong Zhao
doaj  

Existence of Solutions for Two-Point Boundary Value Problem of Fractional Differential Equations at Resonance

open access: yesInternational Journal of Differential Equations, 2014
We establish the existence results for two-point boundary value problem of fractional differential equations at resonance by means of the coincidence degree theory. Furthermore, a result on the uniqueness of solution is obtained.
Lei Hu, Shuqin Zhang, Ailing Shi
doaj   +1 more source

Multiple periodic solutions of a discrete time predator-prey systems with type IV functional responses

open access: yesElectronic Journal of Differential Equations, 2004
By using the continuation theorem of Mawhin's coincidence degree theory, some sufficient conditions are obtained ensuring the existence of multiple positive periodic solutions of a discrete time predator-prey systems with type IV functional responses.
Zhigang Liu   +3 more
doaj  

Existence of Multiple Positive Periodic Solutions to Two Species Parasitical Model with Impulsive Effects and Harvesting Terms

open access: yesDiscrete Dynamics in Nature and Society, 2013
By applying Mawhin’s continuation theorem of coincidence degree theory and some skills of inequalities, we establish the existence of four positive solutions for two species parasitical system with impulsive effects and harvesting terms.
Zhouhong Li
doaj   +1 more source

Existence of solutions for (k,n-k-2) conjugate boundary-value problems at Resonance with $ dim ker L=2

open access: yesElectronic Journal of Differential Equations, 2013
By constructing suitable project operators and using the coincidence degree theory due to Mawhin, the existence of solutions for (k,n-k-2) conjugate boundary-value problems at resonance with dim kerL = 2 is obtained.
Weihua Jiang
doaj  

Solvability of Nonlocal Fractional Boundary Value Problems

open access: yesDiscrete Dynamics in Nature and Society, 2013
This paper is devoted to introduce a new approach to investigate the existence of solutions for a three-point boundary value problem of fractional difference equations as fllows: , , and = We present an existence result at resonance case. The proof
Zhongmin Huang, Chengmin Hou
doaj   +1 more source

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