FourierCosCoefficient[expr, t, n] gives the n\[Null]^th coefficient in the Fourier cosine series expansion of expr.FourierCosCoefficient[expr, {t_1, t_2, ...}, {n_1, n_2, ...
FourierSinCoefficient[expr, t, n] gives the n\[Null]^th coefficient in the Fourier sine series expansion of expr.FourierSinCoefficient[expr, {t_1, t_2, ...}, {n_1, n_2, ...}] ...
GreaterFullEqual[x, y, ...] displays as x \[GreaterFullEqual] y \[GreaterFullEqual] ....
GreaterGreater[x, y, ...] displays as x \[GreaterGreater] y \[GreaterGreater] ....
GreaterLess[x, y, ...] displays as x \[GreaterLess] y \[GreaterLess] ....
GreaterSlantEqual[x, y, ...] displays as x \[GreaterSlantEqual] y \[GreaterSlantEqual] ....
GreaterTilde[x, y, ...] displays as x \[GreaterTilde] y \[GreaterTilde] ....
HaradaNortonGroupHN[] represents the sporadic simple Harada\[Dash]Norton group HN.
HeldGroupHe[] represents the sporadic simple Held group He.
HumpDownHump[x, y, ...] displays as x \[HumpDownHump] y \[HumpDownHump] ....