The context is algebraic number theory.
How to pronounce the symbols $\mathcal{O}_K$ (ring of integers in $K$) and $\mathfrak{m}_K$ (maximal ideal) ?
How to pronounce $\mathcal{O}_K^n$ ?
Note \mathcal{O}_K for $\mathcal{O}_K$ and \mathfrak{m}_K for $\mathfrak{m}_K$.
There is book has some clue.
So I am thinking the following pronunciations:
$\mathcal{O}_K \xrightarrow{pronunciation} O~\text{subscript}~K$
$\mathcal{O}_K^n \xrightarrow{pronunciation} O~\text{subscript}~K~\text{to the}~n~\text{power},~~\text{Or,}~O~\text{subscript}~K~\text{raised to the}~n$
$\mathfrak{m}_K \xrightarrow{pronunciation} m~\text{subscript}~K$.
Is it enough ?