نتایج جستجو برای: nonlinear fourth
تعداد نتایج: 281659 فیلتر نتایج به سال:
Journal:
:Journal of Mathematical Analysis and Applications
2006
Journal:
:Boundary Value Problems
2013
Journal:
:Journal of Mathematical Analysis and Applications
2007
In this paper, a generalized mathematical model of spread of infectious disease as SIRS epidemic model is considered as a nonlinear system of differential equation. We prove that for positive initial conditions the resulting equivalence system has positive solution and under some hypothesis, this system with initial positive condition, has a positive $T$-periodic solution which is globally asym...
Journal:
:International Journal of Mathematics and Mathematical Sciences
1983
Journal:
:Journal of Differential Equations
1978
Journal:
:Applied Mathematics Letters
2012
Journal:
:Applied Mathematics Letters
1988
Journal:
:Mathematical and Computer Modelling
2004
Journal:
:Rocky Mountain Journal of Mathematics
1995
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