Linked Questions

2
votes
0answers
104 views

How to make Eigensystem in version 10 produce the same results as version 9 [duplicate]

The Eigensystem in version 10 seems to give slightly different results as in version 9: ...
0
votes
0answers
48 views

Signage of eigenvector [duplicate]

I am comparing eigenvectors generated from mathematica to matllab. It seems signage of eigenvector generated from Mathematica is opposite from what is generated from matlab. Can anybody review and ...
14
votes
2answers
1k views

Pulsed NMR animation

I'm new here and have never interacted with the community so excuse me if this has been asked before or if I format incorrectly or anything like that. Anyway, I'm trying to make an animation for a ...
12
votes
1answer
837 views

Sorting eigenvectors according to its projection

The problem I'm trying to calculate the eigenvalues and eigenvectors of a matrix that depends on a parameter x. As x changes, I ...
7
votes
1answer
661 views

How to align 3 plots horizontally without spacing?

Suppose I have 3 plots a, b and c, where ...
2
votes
1answer
1k views

Draw Vectors in Spherical Shell and Then Animate

I want to draw three vectors inside a spherical shell. One of the vectors will be moving, the others will be stationary. However, the animation is the next step. For now, I would like to get the ...
5
votes
1answer
669 views

Plotting eigenvalues smoothly

I am trying to plot how the eigenvalues of a matrix change by changing a given a parameter t. Of course the ordering of the eigenvalues does not matter mathematically but it does when I want to make ...
2
votes
1answer
430 views

Why do the eigenvectors for two similar matrixes differ by a large amount

I have two matrixes with values differs only slightly ...
2
votes
3answers
433 views

Eigenvectors of numerical matrix

I have a large numerical matrix whose eigenvalues are all distinct. In the documentation for Eigenvectors it says: For approximate numerical matrices m, the ...
3
votes
2answers
206 views

Plot and an error

I have set of matrices(multiplied to give U123[q, p, r]) and would like to diagonalize U123[q, p, r] and plot the eigenvalues. ...
3
votes
1answer
411 views

Eigenvalue/eigenvector reordering and/or renormalisation?

I have two functions $f(x,y),g(x,y)$ and a matrix $M=\begin{pmatrix}\frac{\partial f}{\partial x} & \frac{\partial f}{\partial y}\\\frac{\partial g}{\partial x} & \frac{\partial g}{\partial y}...
3
votes
1answer
160 views

Graphs Plotting Discontinuous

I'm trying to plot a graph from the eigenvalues of a matrix I created. The graph shows with discontinuities in it and I was looking for some feedback. Here's the code: ...
3
votes
2answers
132 views

Sorting Data by Differences between Columns

In Band Structure calculations one gets rather extensive data of Energy Values (Eigenvalues) and the associated Eigenvectors out of the solution of an Eigenequation of e.g. the form H.$\psi$=E.$\psi$. ...
0
votes
0answers
128 views

Plotting and Animating 3D Vectors

I'd like to plot 3-D vectors (arrows) on a spherical shell given as in: https://www.google.com.pk/search?q=Bloch+sphere&espv=2&source=lnms&tbm=isch&sa=X&ved=...