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CC: @trilinos/anasazi, @srajama1 (Trilinos Linear Solvers Product Lead), @bartlettroscoe, @fryeguy52
## Next Action Status
Triggered by the PR #3951 merged to 'develop' on 10/28/2018 that worke…
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At present there are a variety of special structured matrix types - diagonal, bidiagonal, tridiagonal, symtridiagonal, banded, triangular, hessenberg, symmetric, hermitian, sparse CSC, and so on - in …
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I'm a first-time user of Eigen and Spectra, so what I'm experiencing may not be critical, even not correct, anyway...
I need to solve a Generalized Eigenvalue Problem on CSR-format matrices.
I _al…
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Just ran into pyamg; great to see these complex algorithms be made available in such a neat package!
I started to try out pyamg in some of the more complex solves in my project, and these gave the …
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The `eigs`-function returns incorrect eigenpairs in several cases for generalized eigenvalue problems. The returned eigenvectors are almost zero in norm and the returned eigenvalues are wrong.
```
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Hi,
I am using arpackpp to solve a generalized eigenvalue for symmetric sparse matrices. However, I noticed I get negative eigenvalues for a symmetric positive semi-definite matrix. When I replace th…
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There is a Futility test that seeks to solve a generalized eigenvalue problem: Ax = B \lambda x, with A = [[0.0015, 0.325],[0., 0.]], B=[[0.1208, 0],[-0.117, 0.184]]. Because of a default subspace dim…
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The only test in `sympy/physics/mechanics/tests/test_kane3.py` is `test_bicycle` which is marked as `slow` and too-slow-for-Travis (so not often tested).
I wanted to test it to check changes to its…
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A colleague had a bug in her program that we finally traced down to her call of `linalg.eigh`. If your input is not symmetric/Hermitian, `eigh` will return incorrect eigenstuff.
I'd suggest having …
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Arno Klein (5/5/2013):
i asked satra what he thought about smoothing the surface before measuring lb spectra, and he reminded us that we have to be careful because the spectra will be affected by ch…