libeigen2-doc software package provides virtual package provided by libeigen3-doc, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libeigen2-doc
libeigen2-doc is installed in your system.
Make ensure the libeigen2-doc package were installed using the commands given below,
$ sudo dpkg-query -l | grep libeigen2-doc*
You will get with libeigen2-doc package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Virtual packages |
| Package | libeigen2-doc |
| Version | |
| Description | virtual package provided by libeigen3-doc |
| Sub Section | virtual |