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Positive periodic solutions of singular systems of first order ordinary differential equations
Periodic solutions singular system Krasnoselskii fixed point
2010/12/10
The existence and multiplicity of positive periodic solutions for first non-autonomous singular systems are established with superlinearity or sublinearity assumptions atinfinity for an appropriately ...
THE EXISTENCE AND NONEXISTENCE OF POSITIVE PERIODIC SOLUTIONS FOR NEUTRAL DELAY COMPETITION MODEL
Coincidence degree neutral functional differential equation positive periodic solution
2008/11/25
By using the theory of coincidence degree, sufficient conditions for the existence and
nonexistence of positive periodic solutions of a class of neutral delay competition model
are obtained.
On the Existence of Positive Periodic Solutions for Neutral Functional Differential Equation with Multiple Deviating Arguments
positive periodic solution k-set contraction
2007/12/10
By means of an abstract continuation theory for k-set contraction and continuation theorem of coincidence degree principle, some criteria are established for the existence of positive periodic solutio...
Global Existence of Positive Periodic Solutions for a Distributed Delay Competition Model
global existence positive periodic solution
2007/12/10
By using the continuation theorem of Mawhin's coincidence degree theory, a sufficient condition is derived for the existence of positive periodic solutions for a distributed delay competition model {u...
Consider the general competitive system \dot{u}=uM_1(t;u,v), \dot{v}=vM_2(t;u,v), where \partial M_1/\partial v <0, \partial M_2/\partial u <0, M_i(t+T; u,v) = M_i(t; u, v), i =1, 2. under soniccondit...