The method of differentiating under the integral sign
Journal of Symbolic Computation
Algorithms for computer algebra
Algorithms for computer algebra
Symbolic integration I: transcendental functions
Symbolic integration I: transcendental functions
Rational normal forms and minimal decompositions of hypergeometric terms
Journal of Symbolic Computation - Computer algebra: Selected papers from ISSAC 2001
Computation with hyperexponential functions
ACM SIGSAM Bulletin
Foreword: In honour of Keith Geddes on his 60th birthday
Journal of Symbolic Computation
Abstracts of conferences in honor of Doron Zeilberger's 60th birthday
ACM Communications in Computer Algebra
Hermite reduction and creative telescoping for hyperexponential functions
Proceedings of the 38th international symposium on International symposium on symbolic and algebraic computation
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We describe differential rational normal forms of a rational function and their properties. Based on these normal forms, we present an algorithm which, given a hyperexponential function T(x), constructs two hyperexponential functions T;1;(x) and T;2;(x) such that T(x) = T;1;'(x) + T;2;(x) and T;2;(x) is minimal in some sense. The algorithm can be used to accelerate the differential Gosper's algorithm and to compute right factors of the telescopers.