This paper is concerned with the bounded value problems1/p(t)(p(t)u’)’+f(u)=0, t0, u’(0)=0, lim t→+∞ u(t)=0,where f(0)=0. Such problems arise in the study of semi-linear elliptic differential equa-tions in Rn. It is shown that the problem has at most one positive solution under appro-priate conditions on f and p. Our result can include the important case that p(t)=fn-1and f(u)=uP-u, where n1, p1 are some given constants.
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机译:本文涉及界限值问题1 / p(t)(p(t)u')'+ f(u)= 0,t> 0,u'(0)= 0,lim t→+∞u( t)= 0,其中f(0)= 0。在R n sup>中的半线性椭圆微分方式的研究中出现了这些问题。结果表明,该问题在F和P的有关条件下最多一个正面解决方案。我们的结果可以包括P(t)= f n-1 sup>和f(u)= u p sup> -u,其中n> 1,p> 1的重要情况是一些给定的常数。
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