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Feb
1
awarded  Yearling
Jan
18
awarded  Good Question
Jan
16
comment More efficient matrix-vector product
@Jens Actually, I asked that question :)
Jan
15
revised More efficient matrix-vector product
Added that $A$ is symmetric
Jan
15
comment More efficient matrix-vector product
@rcollyer What exactly do you mean by generating in eigenspace: if $A = S \Lambda S^{-1}$ then I should do $Ax = S \Lambda S^{-1} x$? Also, I read your link on spherical components, but didn't really get how that would translate to the present problem. Again, thanks for the help.
Jan
15
comment More efficient matrix-vector product
Hi all. Sorry for the delay in answering. Yes, $A$ will usually have full rank. It is also symmetric and has zero diagonal. But I don't know all the $x$'s in advance, so I need one dot product at a time. Thank you all for the support.
Jan
15
asked More efficient matrix-vector product
Jan
8
awarded  Popular Question
Dec
8
comment Converting other C++ classes to MTensor in LibraryLink
@halirutan Oh yeah! Very much :)
Sep
12
awarded  Caucus
Aug
25
accepted Computing polynomial eigenvalues in Mathematica
Aug
25
comment Computing polynomial eigenvalues in Mathematica
@J.M. Amazing answer. Thank you a lot.
Aug
24
awarded  Nice Question
Aug
24
comment Computing polynomial eigenvalues in Mathematica
@ruebenko the example above comes from solving Newtons law for a system of particles. Gotta think about more examples. :)
Aug
24
asked Computing polynomial eigenvalues in Mathematica
Aug
23
comment Odd behavior of GridGraph and DirectedEdges
@DavidCarraher Thanks for the answer. I'll report it as a possible bug. I am not sure this is related, but GridGraph draws the graph differently from other graphs.
Aug
23
asked Odd behavior of GridGraph and DirectedEdges
Aug
16
accepted Mathematica + Numerical Recipes
Aug
16
accepted Circuit drawing in Mathematica
Aug
14
comment LeastSquare Solution for the Continuous Time Lyapunov Equation
No. I saw that on the documentation for LyapunovSolve but I don't understand the Mathematics of e Kronecker product.