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### How to plot several functions without jumping? (multiple eigenvalues of a system as functions of 2 parameters)

I've been working on this research problem for months with some success by no global/proper solution to the problem. So I have square, Hermitian matrices of various sizes ($8,20,38$ dimensions) with ...
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### 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 ...
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### How to sort eigenvalues?

I am trying to find Eigenvalues to a 12x12 Matrix ($H$) dependent on two variables $x$ and $y$. Later I want to do a 3D plot of one eigenvalue ($E$) over $x$ and $y$. An analytical solution is not ...
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### How do I store Eigenvalues of a 14*14 matrix in a For loop into an array and then plot that array? [closed]

I have a matrix 14*14 that is dependent on parameter a. How can I plot eigenvalues of the matrix according to varous values of a?
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### 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. ...
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### CharacteristicPolynomial returns 0

I have a following matrix. ...
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### Is it possible to align roots to plot consistently?

I made a routine to find roots of the equation for a specific range of input angle. For this model, usually total number of roots is 10, however at some angles total number of roots is 8. Because of ...
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### plotting functions containing branch cuts and crossings

For Functions That Do Not Have Unique Values, mathematical chooses a specific value; when plotting, say, the eigenvalue of a matrix that has such branch cuts, if the eigenvalues do not cross each ...