General Logarithm/Examples/Base Pi of Pi

Example of General Logarithm
The logarithm base $\pi$ of $\pi$ is:
 * $\log_\pi \pi = 1$

Proof
An instance of Logarithm to Own Base equals 1:


 * $\forall b \in \R_{>0}, b \ne 1: \log_b b = 1$