class function

This entry is about the term of “class function” as it is used in algebraic contexts. (Such class functions are usually set-maps.) For the notion of the same name in set theory see at

class function (set theory).

A function on a group is a **class function** if it is invariant under conjugation action, i.e. it is equivalent to a function on the set of conjugacy classes.

Every group character is in particular a class function.

See also

- Wikipedia,
*Class function*

Last revised on March 9, 2021 at 03:38:37. See the history of this page for a list of all contributions to it.