On 2014-02-17, Marc Mezzarobba <[email protected]> wrote: > Dima Pasechnik wrote: >> sage: r0=QQ['a1,a2'] >> sage: a1,a2=r0.gens() >> sage: r=r0['x1,x2'] > [...] >> I am using such a ring as I want to treat ai as parameters, i.e. I >> would like monomial expansions in xi alone. >> Perhaps there is a better way to accomplish this? > > The best I can think of is > > p.map_coefficients(lambda a: a.subs(a1=2,a2=1)) thanks, that's exactly what I overlooked in the docs.
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