I recently submitted a [pull request](https://github.com/python-control/Slycot/pull/10) for a wrapper for TB05AD. The TB05AD routine is used to efficiently compute the frequency response of a state sp…
'FPContext' object has no attribute 'hypot' error
and same for interval arithmetic
To reproduce run:
```
from mpmath import fp
fp.eig(fp.matrix([[1,2], [3,4]]))
```
mpmath version: '0.19'
@trilinos/belos
@drnoble requests that we add condition number estimation to GMRES.
## Motivation and Context
@drnoble wants this feature for scaling studies. CG already has this feature …
One approach is to embed the domain between an inner and outer ellipse (or in the simplest case, an annulus). Then (mapped) Laurent series can be used instead of the Cauchy formula involving eigs.
…
Should probably be 2^k scaling.
Two papers on the subject of balancing (companion only) are:
http://www.siam.org/meetings/la03/proceedings/lemonnid.pdf
Another paper related to colleague matrices: …
The properties in `MatrixProperties` class in `common.py` are not accessed in consistent manner right now.
Though it may have been a very old issue.
| Properties | Functions |
|---|---|
| is_her…
#### Problem
I think that following utility methods aren't there for Matrices:
1. is_positive - To check whether each element of the Matrix is greater than 0.
2. is_positive_definite - To check…