5
$\begingroup$

Given a matrix $A$ and a vector $v$, I'm aware there are efficient algorithms for computing $e^Av$, where efficient means significantly faster than computing $e^A$ and multiplying by $v$. For a diagonal matrix $D$, is there a similarly efficient algorithm to compute $$ e^A \cdot D = \sum_i (e^A)_{ii} D_{ii}?$$ In particular, is there an efficient way to compute the trace of the exponential?

$\endgroup$

0

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.