(2)膺纯态密度矩阵与膺旋量按同样的 夭正算子(unitary operator)变换演化，这个夭正运算子也 正是观察量运动的运算子。(3)按膺纯态密度矩阵求观察 量平均值可求出按膺旋量态上求该观察量平均值。
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In chapter 2, we use the block-operator matrix technique to study the shortedoperators. The relations of geometry structures between a positive operator and itsshorted operator are exposed.
第二章我们主要运用算子分块矩阵的技巧来研究Shorted算子，揭示了任意一个正算子A与它的Shorted算子∑(S，A)的几何结构关系。
参考来源 - Shorted算子的几何结构及其应用·2,447,543篇论文数据，部分数据来源于NoteExpress
给出了一类多元线性正算子线性组合在一致逼近意义下的特征刻划。
Weighted approximation by a class of linear combinations of Bernstein type operators;
通过对算子矩阵和地震波场矩阵进行多分辨分解和压缩，得到了小波域中地震波场正演模拟算法。
Through the multiresolution decomposition and compression of operator matrix and seismic wave field matrix, we proposed a new method of seismic modeling in wavelet domain.
本文建立了具有正核的多维卷积算子逼近的量化定理。
In this paper, the quantitative theorems on the approximation by multidimensional convolution operators are established.
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