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Attempting to simplify some straightforward expressions involving exponentials of noncommutative or matrix symbols produces wrong results or TypeErrors in the following sample code:
```
from sympy i…
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Positivity-preserving methods for ordinary differential equations
Sergio Blanes, Arieh Iserles and Shev Macnamara
ESAIM: M2AN
DOI: https://doi.org/10.1051/m2an/2022042
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Sympy probably doesn't support this https://en.wikipedia.org/wiki/Matrix_exponential#Matrix-matrix_exponentials
It should be easy to implement. Only question is that should this be a different funct…
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It is pretty common to want to compute unitary matrix exponentials of the form $e^{iAt}b$ for Hermitian matrices $A$. It would be nice to have a method that takes advantage of $A$ being Hermitian he…
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@oscarbenjamin I'm following up on a comment you wrote in our recent discussion on a performance regression (#19532). The performance regression has been partially fixed by the dotprodsim flag in 1.6.…
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```
We should be able to represent matrix exponentials - expressions of the form a**B with a a scalar and B a matrix.
When asked to operate on this we could either use the eigenvalue decomposition o…
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### 🚀 The feature, motivation and pitch
Matrix exponentials are extremely expensive to compute, yet very important in many computing and ML problems . It would be great if such computational expensiv…
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### Summary of Problem:
As part of [this](https://github.com/chapel-lang/chapel/pull/18042) feature (implementation of onenormestimate for Matrix Exponentials), I have implemented few methods which c…
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### Description
I am trying to fine-tune Gemma 2 on TPU and got the following error:
```
Traceback (most recent call last):
File "/usr/local/lib/python3.10/dist-packages/jax/_src/compiler.py", l…
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Error in balance(baP$z, "S") :
BLAS/LAPACK routine 'DGEBAL' gave error code -3
Calls: pmatrix.msm ... MatrixExp -> -> expm.Higham08 -> balance
Execution halted
I got the following error when …