대한수학회보 (Bulletin of the Korean Mathematical Society)

  • 제57권3호
  • /
  • Pages.677-690
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  • 2020
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  • 1015-8634(pISSN)
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  • 2234-3016(eISSN)
대한수학회 (Korean Mathematical Society)
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POSITIVE SOLUTIONS OF A REACTION-DIFFUSION SYSTEM WITH DIRICHLET BOUNDARY CONDITION

  • Ma, Zhan-Ping (School of Mathematics and Information Science Henan Polytechnic University) ;
  • Yao, Shao-Wen (School of Mathematics and Information Science Henan Polytechnic University)
  • 투고 : 2019.04.20
  • 심사 : 2019.09.19
  • 발행 : 2020.05.31
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초록

In this article, we study a reaction-diffusion system with homogeneous Dirichlet boundary conditions, which describing a three-species food chain model. Under some conditions, the predator-prey subsystem (u1 ≡ 0) has a unique positive solution (${\bar{u_2}}$, ${\bar{u_3}}$). By using the birth rate of the prey r1 as a bifurcation parameter, a connected set of positive solutions of our system bifurcating from semi-trivial solution set (r1, (0, ${\bar{u_2}}$, ${\bar{u_3}}$)) is obtained. Results are obtained by the use of degree theory in cones and sub and super solution techniques.

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참고문헌

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