The method of differentiating under the integral sign
Journal of Symbolic Computation
Rational solutions of linear differential and difference equations with polynomial coefficients
USSR Computational Mathematics and Mathematical Physics
Liouvillian Solutions of Linear Differential Equations with Liouvillian Coefficients
Journal of Symbolic Computation
ISSAC '91 Proceedings of the 1991 international symposium on Symbolic and algebraic computation
On solutions of linear ordinary differential equations in their coefficient field
Journal of Symbolic Computation
Hypergeometric solutions of linear recurrences with polynomial coefficients
Journal of Symbolic Computation - Special issue on symbolic computation in combinatorics
Linear ordinary differential equations: breaking through the order 2 barrier
ISSAC '92 Papers from the international symposium on Symbolic and algebraic computation
ISSAC '93 Proceedings of the 1993 international symposium on Symbolic and algebraic computation
D'Alembert substitutions and adjoint differential equations (computer-algebraic aspects)
Computational Mathematics and Mathematical Physics
D'Alembertian solutions of inhomogeneous linear equations (differential, difference, and some other)
ISSAC '96 Proceedings of the 1996 international symposium on Symbolic and algebraic computation
Minimal completely factorable annihilators
ISSAC '97 Proceedings of the 1997 international symposium on Symbolic and algebraic computation
ISSAC '97 Proceedings of the 1997 international symposium on Symbolic and algebraic computation
Computing the minimal telescoper for sums of hypergeometric terms
ACM SIGSAM Bulletin
Symbolic summation with single-nested sum extensions
ISSAC '04 Proceedings of the 2004 international symposium on Symbolic and algebraic computation
Symbolic computation with sequences
Programming and Computing Software
Application of unspecified sequences in symbolic summation
Proceedings of the 2006 international symposium on Symbolic and algebraic computation
A refined difference field theory for symbolic summation
Journal of Symbolic Computation
A symbolic summation approach to feynman integrals
ACM Communications in Computer Algebra
A symbolic summation approach to Feynman integral calculus
Journal of Symbolic Computation
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D'Alembertian solutions of differential (resp. difference) equations are those expressible as nested indefinite integrals (resp. sums) of hyperexponential functions. They are a subclass of Liouvillian solutions, and can be constructed by recursively finding hyperexponential solutions and reducing the order. Knowing d'Alembertian solutions of Ly = 0, one can write down the corresponding solutions of Ly = f and of L*y = 0.