相对纯粹的图形图像处理和数学计算则开发相应算法和模型。
Developing arithmetic and model for graphic and image processing and mathematical computation.
证明了：若用QR分解所作的算法无需计算平方根，则相应的迭代加细算法也无需计算平方根。
It is shown that, if algorithms for performing the QR decomposition are free from calculation of square root, the related iterative refinement algorithms can also be square root free.
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