Designing a Tetration Library

[Gottfried]

For the problem of computing the matrix-exponential

Hm, thanks for the link however do we need the matrix-exponential? We just need \( A^t \), which perhaps can be also expressed as \( \exp(t\log(A)) \) but in this case we also need a fast algorithm for matrix log, or are there other direct uses of the matrix exponential?

Well, Andrew asked for such a routine, if I recall right