The Middle Product Algorithm I
Author(s) -
Guillaume Hanrot,
Michel Quercia,
Paul Zimmermann
Publication year - 2004
Publication title -
applicable algebra in engineering communication and computing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.558
H-Index - 35
eISSN - 1432-0622
pISSN - 0938-1279
DOI - 10.1007/s00200-003-0144-2
Subject(s) - algorithm , product (mathematics) , series (stratigraphy) , inverse , computer science , square root , key (lock) , mathematics , arithmetic , division (mathematics) , paleontology , geometry , computer security , biology
We present new algorithms for the inverse, division, and square root of power series. The key trick is a new algorithm – MiddleProduct or, for short, MP – computing the n middle coefficients of a (2n−1)×n full product in the same number of multiplications as a full n×n product. This improves previous work of Brent, Mulders, Karp and Markstein, Burnikel and Ziegler. These results apply both to series and polynomials.
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