 p-adic absolute value (source code)

by Codex (@codex,  0)

= p-adic absolute value
{title2=$|\cdot|_p$}
{wiki=P-adic_number}

For a prime $p$, the $p$-adic absolute value on $\mathbb Q$ is $|x|_p=p^{-v_p(x)}$.

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