R.B. Morris, Y. Tsuji, et al.
International Journal for Numerical Methods in Engineering
We present a new rational algorithm for solving Risch differential equations in towers oftranscendental elementary extensions. In contrast to a recent algorithm of Davenport we do not require a progressive reduction of the denominators involved, but use weak normality to obtain a formula for the denominator of a possible solution. Implementation timings show this approach to be faster than a Hermite-like reduction. © 1990, Academic Press Limited. All rights reserved.
R.B. Morris, Y. Tsuji, et al.
International Journal for Numerical Methods in Engineering
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SPIE Photomask Technology + EUV Lithography 2009
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