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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
For modular representations the ring of invariants usually fails to be Cohen-Macaulay and computing the depth is often very difficult.
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In particular, we prove an integral formula for the degree of an ample divisor on a variety of complexity 1, and apply this formula to computing the degree of a closed 3-dimensional orbit in any SL2-module.
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Computing invariants of reductive groups in positive characteristic
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This paper gives an algorithm for computing invariant rings of reductive groups in arbitrary characteristic.
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We present an algorithm for computing the invariant field k(X)G.
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| | The typified programming technique for numerical control, described in this paper, is established on the basis of characteristic analysis of geometric configurations and dimensions of any two-dimensional patterns. A great deal of facts have proved that through this typified technique the numerical control programming of complex, special and non-circular curve patterns can be efficiently solved by the mere use of common computing tools, instead of expensive general electronic computers. | | 本文提出的数控编程典型化技术,是在对任意二维空间图形的几何形状及几何量进行特征分析的基础上建立起来的。大量实践证明:这种典型化技术利用普通的计算工具,就能十分有效地解决复杂图形、特殊图形和非圆曲线图形的数控编程,而不必限于使用费用昂贵的通用电子计算机。 | | 文摘来源 | | In this paper the algorithms for geometric transformation of image data and the decomposition of the image matrix into submatrices are introduced. When the image is digitized in the line scanning mode, the geometric transformation of the two dimensional image matrix can be realized by two one-dimensional geometric transformations, i.e., first carrying out the geometric transformation along the scanning lines and then rotating the image matrix through 90 degrees and carrying out the geometric trans formation... | | 本文提出一种实现图像几何形状变换及图像数据分解成子矩阵的算法和装置。由于采用软件和专用解算装置相结合的方法,因此能有效地节省计算机处理时间,并适用于在小型计算机图像处理系统中,实现影像的几何畸变纠正及影像和线划图的投影变换。 | | 文摘来源 | | In this paper the structures of mathematical problems to be calculated in computers are analysed. There are three kinds:1. Serial computing problems.2. Parallel computing problems.3. Serial-parallel computing problems.Among them, the serial-parallel computing processing is the main type in scientific calculation. A tentative idea of a simple serial-parallel architecture is given here, and a preliminary analysis is made. The result of the analysis shows that the serial-parallel archit... | | 本文分析了计算机上计算的数学问题的结构。在此基础上探讨串并行混合型计算机体系结构的必要性和可行性。设想了一个简单的串并行混合体系结构,并作了定性、定量分析。 文中简要谈到了并行结构分散存储减少外走线的可能性。 近年来,串并行混合计算问题越来越为人们所重视。CRAY-1,BSP,STAR-100改进机等投入运行,雄辨地说明了串并行混合体系结构的必要性和可行性。整理本文过程中,作了简单地引述。 | | 文摘来源 | |   | | << 更多相关文摘 |
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