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## Environment data
- Language Server version: v2021.10.1-pre.1
- OS and version: Windows 7
- Python version (& distribution if applicable, e.g. Anaconda): 3.8.11 Anaconda
## Sample code…
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**Description**
When running an embedded fluid dynamics simulation with MPI Parallelism type and default settings for AMGCL, the following run time error is returned: **Error: Zero pivot in ILU**
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to do's before this release
- [ ] finish pyGPCCA integration, make sure tests pass (#472)
- [ ] close the legend plotting PR (#470)
- [ ] write release notes
I will suggest text for the release…
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I updated msmtools to the most recent version of the fork of Bernhard. I run `python-vendorize` etc. to make sure the update takes place. Now, when I try to run `estimator.compute_macrostates`, I get
…
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The `modal_form()` function appears to assume that all eigenvalues are distinct. The following example gives strange results:
```
import control as ct
sys_repeat = ct.StateSpace([[-1, 1], [0, -1]]…
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If L is rank deficient (it is a combinatorial laplacian of a graph) then the 0 eigenvalue appears with the LR() eigenvalues.
For example:
```julia
julia> L = sparse(lapl)
10×10 SparseMatrixCSC…
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MWE:
```
using ArnoldiMethod, LinearAlgebra, SparseArrays
function mwe()
A = spdiagm(
-1 => -1.0*ones(9),
0 => 2.0*ones(10),
1 => -1.0*ones(9)
)…
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The notation used in section QR iteration is a little confusing to me. We write T = Q^TAQ and A = QR where the Qs mean different things.
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My issue is about the error LinAlgError: Schur form not found. Possibly ill-conditioned raised when I use the following code. The problem is that it only happens in the first execution of the script, …
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The Walrus currently uses eigen to do linear algebra in C++, this allows for flexibility. Typically linear algebra routines are optimised for dealing with big matrices, however, in the walrus one will…