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Nemocas / Nemo.jl

Julia bindings for the FLINT number theory C library
http://nemocas.github.io/Nemo.jl/
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Composition/evaluation of power series #321

Open wbhart opened 7 years ago

wbhart commented 7 years ago

We don't currently have composition or evaluation of power series in any meaningful sense.

After adding these, we probably should use them to provide proper exponentials of power series.

fredrik-johansson commented 7 years ago

After adding these, we probably should use them to provide proper exponentials of power series.

Why? Composition is slower than the exp() function we already have.

wbhart commented 7 years ago

Oh, you are right. I mistakenly thought our exp function only works for exp(x + O(x^n)).

On 12 November 2017 at 19:35, Fredrik Johansson notifications@github.com wrote:

After adding these, we probably should use them to provide proper exponentials of power series.

Why? Composition is slower than the exp() function we already have.

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wbhart commented 3 years ago

Composition of power series now seems to exist. There is a more recent ticket asking for evaluation of power series, but it is not obvious what this actually means.