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] ....
HumpEqual[x, y, ...] displays as x \[HumpEqual] y \[HumpEqual] ....
ImageColorSpace[image] gives the name of the color space of image.