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Feature request: Multiple timesteps in Exponentiate #71

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MasonProtter opened this issue May 18, 2023 · 1 comment
Open

Feature request: Multiple timesteps in Exponentiate #71

MasonProtter opened this issue May 18, 2023 · 1 comment

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@MasonProtter
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Suppose I have some linear operator A and I want to know the result of exp(t * A) * v for a bunch of different values of t. The naïve way to do this would be to do something like map(t -> exponentiate(A, t, v), ts), but if I understand correctly, there's a lot of work that done for each t that could be re-used between iterations, especially if the ts are some sort of sorted sequence.

Is this something that'd be easy to support in KrylovKit?

@Jutho
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Jutho commented May 23, 2023

I guess that would be a rather straightforward generalisation.

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