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seen Apr 6 at 16:56

Jul
2
awarded  Curious
Jan
21
awarded  Popular Question
May
10
accepted PDE: Why do they have the wrong units?
May
10
comment PDE: Why do they have the wrong units?
Right, I guess the variable names are often not reflecting the units in these equations (implicit).
May
10
comment PDE: Why do they have the wrong units?
@copper.hat Okay, maybe it's the case that the notation is often funky. Using $R,L,C$ really isn't correct (these are now linear densities). Thanks!
May
10
comment PDE: Why do they have the wrong units?
@copper.hat So are you implying that in all PDEs where the units appear off, that the multiplicative constants must be dimensionally normalized?
May
10
comment PDE: Why do they have the wrong units?
Post modified...
May
10
revised PDE: Why do they have the wrong units?
added 142 characters in body
May
10
asked PDE: Why do they have the wrong units?
May
27
asked Classifying A Matrix - matrix representation of an operator with linear operators as entries
Mar
7
comment Lanczos Algorithm - Searching for Multiple Eigenvalues w/ Seeding Strategy
This is exactly the sort of comment I was looking for. I sincerely appreciate your time in reading my question. I now have something to potentially debug in my code. (I'm actually rather surprised that I didn't realize this, given that in QM the eigenvecs must be orthogonal and that all of the observable operators are Hermitian).
Mar
7
asked Lanczos Algorithm - Searching for Multiple Eigenvalues w/ Seeding Strategy
Jan
15
accepted Laplacian Operator Represented as a Matrix - Problem Finding the Hermiticity
Jan
15
comment Laplacian Operator Represented as a Matrix - Problem Finding the Hermiticity
I truly appreciate this detailed response.
Jan
14
comment Laplacian Operator Represented as a Matrix - Problem Finding the Hermiticity
@DavideGiraudo I could add that the amplitude and phase (if complex) of the entries will change depending on the value of F[n]...destroying hermiticity. It looks like you've taken the coefficients of the matrix entries instead of the definition.
Jan
14
comment Laplacian Operator Represented as a Matrix - Problem Finding the Hermiticity
@DavideGiraudo I do not understand your response. Could you expand your answer a bit? It's possible that you don't see what I'm doing. I'm not trying to take the Laplacian of general functions evaluated at some point F[n]. I'm discretizing the operator. Just to add a bit more: F[1] != F[2], in general.
Jan
14
asked Laplacian Operator Represented as a Matrix - Problem Finding the Hermiticity
Nov
16
awarded  Tumbleweed
Oct
27
awarded  Commentator
Oct
27
comment Numerical Linear Algebra - Finding the eigenvector associated with a known eigenvalue
I should add for anyone reading this in the future: Householder transformations on an augmented matrix accompanied by a linear solve including back substitution is a method of accomplishing this, but it appears to have large numerical error for matrices larger than 5x5.