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I am solving a coupled system of PDEs. They are diffusion-like (second order form of the steady-state transport equation). Specifically, they form an eigenvalue problem that I am solving with SLEPc.
…
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For the first time, I'm looking at scikit-fem in a serious manner. Diving into it, I notice that the common way the "apply" Dirichlet conditions is to eliminate the respective entries from the matrix/…
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Hi. Many thanks for this great library.
I was wondering if there is a way to compute the generalized eigenvalue problem with MathNet.Numerics of the form:
```
| K − λM |= 0
```
where both K an…
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I am building a pair of large PETSc matrices to pass to SLEPc for a generalized eigenvalue problem.
To translate from the MFEM matrix to a PETSc matrix, my code currently is
```cpp
a.Assemble(skip_…
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With `Arpack v0.4.0`
```julia
julia> using Random
julia> Random.seed!(123);
julia> A, B = randn(10, 10), randn(10, 10);
julia> eigs(A, B)[1]
6-element Array{Complex{Float64},1}:
-151.11…
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From
```
Start 18: unit_test_bse
18/84 Test #18: unit_test_bse ...........................***Failed 0.22 sec
Running 1 test case...
A
nan nan nan nan nan nan nan nan nan nan
…
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Calling `DiscreteAlgebraicRiccatiEquation` with
```
A = [ 0 , 1; 0, 0 ]
B = [ 0; 1 ]
Q = eye(2)
R = 1
```
results in the DARE solver getting stuck in an infinite loop in the `reorder_eigen` su…
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https://en.wikipedia.org/wiki/Common_spatial_pattern
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I am honour to learn LAPACK package, I created the make.inc file with the example(the content is the same as make.inc.example).
But when I installed it with 'make', there was some errors:
make[2…
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I noticed in the tutorial when optimal instruments were implemented, the procedure was:
1. Initial estimate with 1s GMM
2. Compute optimal instruments
3. Updated results with 1s GMM
I am curi…