Séminaire Lotharingien de Combinatoire, 82B.101 (2019), 8 pp.

Antonio Jiménez-Pastor

DD-finite functions in Sage

Abstract. We present here a Sage implementation for DD-finite functions, which are a natural extension of the class of holonomic or D-finite functions. The package, focused on a functional approach, provides natural commands for executing closure properties among DD-finite functions, a general framework for extracting their coefficient sequences and allows the user to compute the composition (as power series) of the functions treated in the package.

Received: November 15, 2018. Accepted: February 17, 2019. Final version: April 1, 2019.

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