DocumentationMathematicaThe Mathematica BookMathematica Reference GuideListing of Named Characters
x y is by default interpreted as SmallCircle[x, y].
Used to indicate function composition.
Not the same as the letter-like form \[EmptyCircle].
Not the same as \[Degree].
See Section 1.10.8 and Section 3.10.4.
See also: \[FilledCircle] , \[CircleDot] , \[CircleTimes] .