i have all those files, (imidnight commander) but i am not sure if they are installed.

when i type apt-cache policy liblapack3gf
it says

liblapack3gf:
Installed: 3.1.1-6maemo2
Candidate: 3.1.1-6maemo2
Version table:
*** 3.1.1-6maemo2 0
500 http://repository.maemo.org fremantle/free Packages
100/var/lib/dpkg/status