In this case the virtual-package is a wrapper to eigen3-doc [2], which is described there [1].
This means eigen2 is replaced with eigen3 in Debian-Jessie. And translation-error is gone (history!).
[1] https://packages.debian.org/search?keywords=eigen2&searchon=names&suite=all§ion=all [2] https://packages.debian.org/wheezy-backports/libeigen3-doc
In this case the virtual-package is a wrapper to eigen3-doc [2], which is described there [1].
This means eigen2 is replaced with eigen3 in Debian-Jessie. And translation-error is gone (history!).
[1] https:/ /packages. debian. org/search? keywords= eigen2& searchon= names&suite= all§ion= all /packages. debian. org/wheezy- backports/ libeigen3- doc
[2] https:/