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Last night I found what appears to be a bad bug when computing a full SVD using xGESDD. On the particular matrix, companion_demo(n) from EigTool with n>=26, the computed singular values are totally d…
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Fix the eigenvalue solving and sorting for the non-isotropic half space case.
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We currently employ the `lobpcg` solver from this Julia package in our [DFTK.jl](https://github.com/mfherbst/DFTK.jl) electronic structure theory code. In our observations, the current Cholesky-QR-bas…
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I am trying to use the function pdsygvx to find a subset of the eigenvectors in a generalized symmetric eigenvalue problem. For small sizes, everything works fine. When trying to benchmark the code, m…
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Just a place to dump excess, redundant learning objectives in case we need them.
- model a physical vibrating system and understand it's essential motion characteristics
- numerically integrate no…
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I encountered the following error in computing the eigenvalues of a pair of complex matrices `A` and `B`, arising by a similarity transformation of a pair of Hamiltonian-skew Hamiltonian matrices. The…
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Below is the full list of HSL packages from https://www.hsl.rl.ac.uk/catalogue.
This issue is used to track the progress on HSL interfaces and to assign a priority to each.
Next to each package, p…
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Calculating symbolic (and numeric) [Routh-Hurwitz Criterion](https://en.wikipedia.org/wiki/Routh%E2%80%93Hurwitz_stability_criterion) would be beneficial for control systems analysis and could be a me…
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Hello, I'm trying to generate a predictive distribution from a lognormal random intercept model using simulate but I get very large and negative results.
Here's the model:
`attesa.glmer.full.in…
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## Your Environment
* Operating System and version: Ubuntu 14.04
* Compiler: GCC v4.8.4
* PCL Version: 1.8.1
* C++ Version: C++11
## Context
I'm currently trying to find a point cl…