getdp software package provides general environment for the treatment of discrete problems, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install getdp
getdp is installed in your system.
Make ensure the getdp package were installed using the commands given below,
$ sudo dpkg-query -l | grep getdp *
You will get with getdp package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Mathematics |
| Package | getdp |
| Version | 2.9.2+dfsg1-1+b4 |
| Description | general environment for the treatment of discrete problems |
| Sub Section | Math |