characteristic function

About 0.32 uses per million words.

Meaning

1. noun A function which is equal to 1 for all points in its domain which belong to a given set, and is equal to 0 for all points in the domain which do not belong to that given set.
2. noun A complex function completely defining the probability distribution of a real-valued random variable

Similar words

indicator function constant function continuous function identity function single-valued function characteristic polynomial even function partial function inclusion function subset classifier