FractionBox[x, y] is a low-level formatting construct that represents x/y in notebook expressions.
FrontEndExecute[expr] sends expr to be executed by the Mathematica front end.
FullForm[expr] prints as the full form of expr, with no special syntax.
GeoDirection[{lat_1, long_1}, {lat_2, long_2}] gives the azimuthal direction from one latitude-longitude position on the Earth to another.GeoDirection[pos_1, pos_2] gives the ...
GeoDistance[{lat_1, long_1}, {lat_2, long_2}] gives the geodesic distance in meters between latitude-longitude positions on the Earth.GeoDistance[pos_1, pos_2] gives the ...
GeoPositionENU[{east, north, up}, p] represents a point with local Cartesian coordinates {east, north, up} in a reference system specified by the position p.
Glaisher is Glaisher's constant with numerical value \[TildeEqual] 1.28243.
GroupActionBase is an option to specify a base for a group.
GroupElementQ[group, g] returns True if the object g is an element of group and False otherwise.
GroupGenerators[group] returns a list of generators of group.