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半线性抛物型方程初边值问题解的性态
The Behavior of Solution of Initial Boundary Value Problem for Semi-linear Parabolic Equation
【摘要】 <正> 1.引言对于半线性抛物型议程的初边值问题■解的性质有许多作者进行了讨论,设λ0是-T(D(x)T)所对应的最小特征值,φ(x)为对应的特征函数,则λ0>0,且可取φ(x)>0,x∈Ω它们是如下问题的解
【Abstract】 Consider the initial boundary value problem for semi--linear parabolic equation Then the property of blow up depend not only λ,but also function f(t). Suppose f(t)>0 and f (t)=O(e?), if α(λ--λ0)+β<0,then the solution blow up for big inital data and global solution exists forsmall data. When u0(x)≥0 is bounded above, in order to exist a global solution, it is sufficient to takeβsmall, f(t) is a factor to avoid blow up.
- 【文献出处】 纯粹数学与应用数学 ,Pure and Applied Mathematics , 编辑部邮箱 ,1992年02期
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