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The Approach to the Covariance of the Outer Producter of Two Independent Random Vector in Inter Productor Space
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作者 杨金中 李新 《Chinese Quarterly Journal of Mathematics》 CSCD 1993年第2期56-59,共4页
The purpose of this article is to prescnt by using vector space methods. a formula as how to calculate the covariance of the outer product of two independent random vecters in inter product space and to makes a discus... The purpose of this article is to prescnt by using vector space methods. a formula as how to calculate the covariance of the outer product of two independent random vecters in inter product space and to makes a discussion on the covariance of the orthogonally invariant random vector and that of the weakly spherically distributed orter produt. 展开更多
关键词 vector space inter product outer product
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On Two Conjectures Concerning the Veronese Generating submanifolds
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作者 宋鸿藻 胡泽军 《Chinese Quarterly Journal of Mathematics》 CSCD 1993年第2期17-21,共5页
The notion of finite type submanifolds was introduced by B. Y. Chen. In this paper the conjectures on scalar curvature of Veronese generating submanifolds in E~σ and the minimal conjecture on Veronese space-like subm... The notion of finite type submanifolds was introduced by B. Y. Chen. In this paper the conjectures on scalar curvature of Veronese generating submanifolds in E~σ and the minimal conjecture on Veronese space-like submanifold Σ and Veronese pseudo-Riemannian submanifold in E_1~σ are proved. We have Σ is minimal in H^5. is minimal in S_1~5, Σ and are of 1-type in E_1~σ. 展开更多
关键词 Finite Type Submanifolds Minimal Submanifolds Veronese Generating Submanifolds.
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The Approximation Properties of Certain Interpolation Operators of Entire Exponential Type (1)
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作者 刘九芬 田继善 《Chinese Quarterly Journal of Mathematics》 CSCD 1993年第2期32-39,共8页
In this paper, the authers introduce certain entire exponential type interpolation operatots and study the convergence problem of these operatots in c(R) or Lp(R) (1≤p<∞)
关键词 entire exponential type interpolation operators covergence property
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