/usr/share/applications/xmaxima.desktop is in xmaxima 5.38.1-8+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | [Desktop Entry]
Version=1.0
Encoding=UTF-8
Name=Maxima Algebra System
GenericName=Computer Algebra System
Comment=An interface to the Maxima Computer Algebra System
Exec=xmaxima
Icon=maxima-icon
Type=Application
Terminal=false
Categories=Education;Math;
|