# Category:Dirichlet Functions

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This category contains results about Dirichlet Functions.

A Dirichlet function $D: \R \to \R$ is a real function defined as:

$\forall x \in \R: \map D x = \begin {cases} c & : x \in \Q \\ d & : x \notin \Q \end {cases}$

for $c, d \in \R$ such that $c \ne d$.

The canonical example of this has $c = 1$ and $d = 0$.

## Pages in category "Dirichlet Functions"

The following 3 pages are in this category, out of 3 total.