dd_functions: Differentiably definable (DD-finite) functions

Description

Package to work with differentiably definable functions.

These generalize the class of differentially finite or “D-finite” functions:

  • D-finite functions satisfy linear differential equations with polynomial coefficients

  • DD-finite functions satisfy linear differential equations with D-finite functions as coefficients

  • differentiably definable functions are obtained by iterating this

License

GPLv3

Upstream Contact

Type

optional

Dependencies

Version Information

requirements.txt:

dd_functions @ git+https://github.com/passagemath/passagemath-pkg-dd_functions.git

Installation commands

$ pip install dd_functions@git+https://github.com/passagemath/passagemath-pkg-dd_functions.git

$ sage -i dd_functions

However, these system packages will not be used for building Sage because spkg-configure.m4 has not been written for this package; see upstream Issue #27330 for more information.