/usr/share/applications/snappea.desktop is in snappea 3.0d3-22ubuntu1.
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 | [Desktop Entry]
Name=Snappea 3-Manifold Creator
GenericName=3-Manifold Creator
Comment=Create and study hyperbolic 3-manifolds
Exec=snappea
Icon=snappea
Type=Application
Categories=Math;Education;Science;
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