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The Slode Package
The Slode package contains functions to find formal power series solutions of linear ordinary differential equations (LODEs), to determine points for some special series solutions (hypergeometric, rational, polynomial, and sparse series).
Create a LODEstruct Structure from a LODE
DEdetermine - Check a LODE and create the LODEstruct structure
Create Formal Power/Taylor Series Solutions
FPseries - Create formal power series solutions
FTseries - Create formal Taylor series solutions
Determine Candidate Points for Some Special Series Solutions
candidate_points - Determine candidate points for hypergeometric, rational and polynomial power series solutions of homogeneous LODEs with polynomial coefficients
candidate_mpoints - Determine mpoints for m-sparse power series
candidate_mpoints/irreducible - Use a much faster algorithm that returns all m-points if the equation is irreducible
Find Formal Power Series Solutions
polynomial_series_sol - Find formal power series solutions with polynomial coefficients
rational_series_sol - Find formal power series solutions with rational coefficients
hypergeom_series_sol - Find formal power series solutions with hypergeometric coefficients
msparse_series_sol - Find formal m-sparse power series solutions
mhypergeom_series_sol - Find formal m-sparse m-hypergeometric power series
hypergeom_formal_sol - Find formal solutions with hypergeometric series
References
Abramov, S. "m-Sparse Solutions of Linear Ordinary Differential Equations with Polynomial Coefficients." Discrete Math., Vol. 217, (2000): 3-15.
Abramov, S. "Power Series Solutions with "Eventually Nice" Coefficients of Linear Ordinary Differential Equations." Proc. FPSAC'98. 1998.
Abramov, S. "Solutions of linear differential equations in the class of sparse power series." Proc. FPSAC'97, pp. 1-10. 1997.
Abramov, S.; Bronstein, M.; and Petkovsek, M. "On Polynomial Solutions of Linear Operator Equations." Proceedings of ISSAC '95. 1995.
Abramov, S., and Petkovsek, M. "Special Power Series Solutions Of Linear Differential Equations." Proceedings of FPSAC'96. 1996
Petkovsek, M., and Salvy, B. "Finding all hypergeometric solutions of linear differential equations." Proceedings of ISSAC '93. 1993
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