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一类拟线性抛物方程解的blow-up
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作者 陈义安 《数学理论与应用》 2004年第1期1-3,共3页
在文 [4 ]的基础上 ,用能量估计法研究了非线性抛物方程ut- ∑nt,j=1 xi(aij(x) u xj) - Δut=f(x,t,u,Du)初边值问题解的 blow- up性质 ,得到了解发生 blow- up的条件 .
关键词 拟线性抛物方程 能量估计法 初值问题 边值问题 拉普拉氏算子
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Finite Type Non-Minimal Submanifolds
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作者 宋鸿藻 吴报强 《Chinese Quarterly Journal of Mathematics》 CSCD 1992年第4期76-83,共8页
The notion of finite type submanifolds was introduced by B. Y. Chen. In this paper we consider the characteristics and the classifications of finite type non-minimal submanifolds. The characteristic theorems of 2-type... The notion of finite type submanifolds was introduced by B. Y. Chen. In this paper we consider the characteristics and the classifications of finite type non-minimal submanifolds. The characteristic theorems of 2-type Chen submanifolds,mass-symmetrie hypersurfaces and Dupin hypersurfaces in E_3~m are obtained. The classification theorems of 3-type hypersurfaces and null 2-type curves in E_3~m are also proved. 展开更多
关键词 Finite Type Submanifolds Minimal Submanifolds
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