Computations in extensions of Q_p

[Roland Dreier <droland@mail.math.okstate.edu>]

I'd like to do some simple arithmetic with elements of unramified
extensions of p-adic fields.  In other words, I'd like to compute with
power series in "p" whose coefficients lie in an finite field with p^a
elements, for a>1.  Is this easy/possible with PARI?

thanks,
Roland

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