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A small raised ring between two functions.
Also known as: Composition operator, Ring operator, Circle operator, After
A small ring between two functions means apply the right one first. The order surprises almost everybody the first time, and it follows from the notation for applying a function rather than from any deeper principle.
Denotes composition of functions: the right-hand function is applied first and its result passed to the left-hand one.
Contexts: Mathematics
Has its apparently backwards order forced by the convention of writing a function to the left of its argument.
Contexts: Mathematics
A small hollow ring set at the middle height of a line of type between two named functions.