On the risch-norman integration method and its implementation in MAPLE

On the risch-norman integration method and its implementation in MAPLE
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risch-norman积分方法及其在MAPLE中的实现

DOI:
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发表时间:
1989
期刊:
International Symposium on Symbolic and Algebraic Computation
影响因子:
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通讯作者:
L. Y. Stefanus
L. Y. Stefanus
中科院分区:
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文献类型:
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作者:
K. Geddes;L. Y. Stefanus

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与超越初等函数积分的递归Risch算法不同,Risch-Norman方法直接在一个步骤中处理域扩展的塔。除了对数和指数领域的扩展,这种方法可以处理的切线方面的扩展。因此,它允许处理三角函数而不将其转换为复指数形式。我们回顾这种方法,并描述其在MAPLE中的实现。一个启发式的增强,这种方法也提出。
Unlike the Recursive Risch Algorithm for the integration of transcendental elementary functions, the Risch-Norman Method processes the tower of field extensions directly in one step. In addition to logarithmic and exponential field extensions, this method can handle extensions in terms of tangents. Consequently, it allows trigonometric functions to be treated without converting them to complex exponential form. We review this method and describe its implementation in MAPLE. A heuristic enhancement to this method is also presented.