共查询到12条相似文献,搜索用时 62 毫秒
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本文给出了极小几何Lp(p≥1)积分曲率的定义.对于一个包含原点在其内部的凸体,主要证明了其Lp熵Petty体的存在性和唯一性.同时研究了极小几何Lp积分曲率和Lp熵Petty体的连续性. 相似文献
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叶德平等人介绍了任意实数p(p≠-n)的多重凸体的L_p-混合几何表面积.本文给出了关于任意实数p(p≠n)的多重星体的L_p-对偶混合几何表面积的概念,并且建立了一些相关不等式. 相似文献
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本文研究一类形如(1)的Fourier积分算子的保持Lp,Hps及Bpqs的有界性问题。此中位相函数满足条件(2),而振幅属于象征类S1,δ-m,0≤δ≤1,文中还初步探讨了(0≤p<1)时的Lp有界性。 相似文献
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经典的仿射均质积分不等式是Brunn-Minkowski理论中一个关键不等式.建立了Lp Brunn-Minkowski型仿射均质积分不等式,定义了Lp Brunn-Minkowski型仿射混合均质积分且推广得到了Lp Brunn-Minkowski型仿射混合均质积分不等式. 相似文献
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现代雷达技术中常用啁啾信号取代脉冲信号 ,前者可看成Lp空间中的信号 .在Lp 的框架下构造了Wigner函数和不确定函数 ,并利用相干对偶元 ,部分推广了测不准原理 相似文献
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We use Radial Basis Functions (RBFs) to reconstruct smooth surfaces from 3D scattered data. An object's surface is defined implicitly as the zero set of an RBF fitted to the given surface data. We propose improvements on the methods of surface reconstruction with radial basis functions. A sparse approximation set of scattered data is constructed by reducing the number of interpolating points on the surface. We present an adaptive method for finding the off-surface normal points. The order of the equation decreases greatly as the number of the off-surface constraints reduces gradually. Experimental results are provided to illustrate that the proposed method is robust and may draw beautiful graphics. 相似文献
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We develop sufficient conditions for optimality in the generalized problem of Bolza. The basis of our approach is the dual Hamilton–Jacobi inequality leading to a new sufficient criterion for optimality in which we assume the existence of a function satisfying, together with the Hamiltonian, a certain inequality. Consequently, using this criterion, we derive new sufficient conditions for optimality of first and second order for a relative minimum. 相似文献