Connecting orbits in scalar reaction diffusion equations

Connecting orbits in scalar reaction diffusion equations
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标量反应扩散方程中的连接轨道

DOI:
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发表时间:
1988
期刊:
影响因子:
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通讯作者:
B. Fiedler
B. Fiedler
中科院分区:
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文献类型:
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作者:
P. Brunovský;B. Fiedler

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我们考虑一维反应扩散方程的流动 $$ {u_t} = {u_{xx}} + f(u),x (0,1)$$ (1.1) 具有狄利克雷边界条件 $$ u(t,0) = u(t,1) = 0{ 分机{ }}$$ (1.2) 令 v、w 表示平稳,即与 t 无关的解。我们说 v 连接到 w,如果存在 (1.1), (1.2) 的轨道 u(t, x),使得 $$ mathop {lim }limits_{t o - infty } ;uleft( {t, cdot } ight) = upsilon ;mathop {lim }limits_{t o - infty } ;uleft( {t, cdot } 右)=w$$ (1.3) 即 u(t,·) 是连接 v 和 w 的异宿轨道。在本报告中,我们解决以下问题:
We consider the flow of a one-dimensional reaction diffusion equation $$ {u_t} = {u_{xx}} + f(u),x in (0,1)$$ (1.1) with Dirichlet boundary conditions $$ u(t,0) = u(t,1) = 0{ ext{ }}$$ (1.2) Let v, w denote stationary, i.e. t-independent solutions. We say that v connects to w, if there exists an orbit u(t, x) of (1.1), (1.2) such that $$ mathop {lim }limits_{t o - infty } ;uleft( {t, cdot } ight) = upsilon ;mathop {lim }limits_{t o - infty } ;uleft( {t, cdot } ight) = w$$ (1.3) i.e. u(t, ·) is a heteroclinic orbit connecting v to w. In this report we address the following question: