# Definition:Prime-Counting Function/Also known as

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## Prime-Counting Function: Also known as

Some sources merely refer to the **prime-counting function** as the **$\pi$ (pi) function**.

## Sources

- 2008: David Joyner:
*Adventures in Group Theory*(2nd ed.) ... (previous) ... (next): Chapter $2$: 'And you do addition?': $\S 2.1$: Functions: Example $2.1.1$