Eigenvalues

Program calculates eigenvalues, modal parameters and normalization constants for a thin circular plate with elastic edge supports. Both translational and rotational constraints are considered. User can modify the constraints and vary Poisson ratio.

Calculates the eigenvalues, state transition matrix, state vector and output of a linear system described in state space form.The answer is given in symbolic form.>> statespaceThe inputs A,B,C, and D must be given in matrix form.The input function or vector must be given in simple quotes.Ex:...

Computes Parallel Analysis criteria (eigenvalues) for determining the number of factors to retain for rotation in factor analysis.


Platforms: Mac

The package HermiteEig calculates a finite number of numerical eigenvalues and eigenfunctions of Schroedinger problem using the Hermite spectral method


Platforms: Matlab

Numerical Mathematical Utilities offer powerful, specialized, mathematical capabilities, they are for immediate online use, and since they run within a web browser, they work on all the operating systems. Among the tools offered are utilities for solving the Quadratic, Cubic, and Quartic...


Platforms: Any Browser+Javascript

The LTI-Lib is an object oriented library with algorithms and data structures frequently used in image processing and computer vision. The main goal of the LTI-Lib is to provide an object oriented library in C , which simplifies the code sharing and maintenance, but still providing fast...


Platforms: Windows, Mac, *nix, C/C++, BSD Solaris

PDL::Slatec is a PDL interface to the slatec numerical programming library. SYNOPSIS use PDL::Slatec; ($ndeg, $r, $ierr, $a) = polyfit($x, $y, $w, $maxdeg, $eps); This module serves the dual purpose of providing an interface to parts of the slatec library and showing how to interface PDL...


Platforms: *nix

Free Scripting Addition to provide advanced mathematical commands. Includes:linear algebra (eigenvalues, linear systems solving, etc.)signal processing (1d, 2d, and n-d FFT, cross- and self-correlations, convolution, interpolation)image processing (import/export, particle analysis)3D arrays...


Platforms: Mac

ALL-IN-ONE MULTI-PHYSICS FINITE ELEMENT MODELING Ever wish there was a flexible system for solving all the partial differential equation problems that come up in science and engineering, so you didn't have to buy and learn a new software tool for each problem? Well, now your wish has come...


Platforms: Windows, Mac, Linux

Free Matrix calculator is a practical math tool to calculator real matrix and complex matrix. As you see, it's easy, various, and effectual. Download and try it. Function: Matrix inverse. Matrix transpose.Largest component. Smallest component. Matrix or vector norm.Dimension. Sum of diagonal...


Platforms: Windows

The MIT Photonic-Bands (MPB) package is a free program for computing the band structures (dispersion relations) and electromagnetic modes of periodic dielectric structures, on both serial and parallel computers.This program computes definite-frequency eigenstates (harmonic modes) of Maxwell's...


Platforms: *nix, C/C++, BSD

PLOTAUTOBD builds bifurcation diagrams as displayed by XPPAUT, from AUTO data saved in a DAT file by XPPAUT option File/All Info.Several built-in features allow to finely control the graphic output with the possibility to produce publication quality figures as well as to make bifurcation data...


Platforms: Matlab

- Subtracting the mean of the data from the original dataset - Finding the covariance matrix of the dataset - Finding the eigenvector(s) associated with the greatest eigenvalue(s) - Projecting the original dataset on the eigenvector(s) - Use only a certain number of the eigenvector(s) - Do...


Platforms: Matlab

Determinantal matrix representations of hyperbolic polynomials are a current topic of interest and research among those working with LMI's (Linear Matrix Inequalities) and SDP (semi-definite programming). This toolbox was used to demonstrate some of the theorems presented in the author's Ph.D....


Platforms: Matlab

This e-book is based on the Student Edition of MATLAB 7, which includes a symbolic toolbox. The Professional Edition may of course also be used. The goal is to exploit a restricted subset of MATLAB commands and functions to explore most of the elements of undergraduate mathematics. All items from...


Platforms: Matlab

[blockVectorX,lambda]=lobpcg(blockVectorX,operatorA)outputs the array of algebraic smallest eigenvalues lambda andcorresponding matrix of orthonormalized eigenvectors blockVectorX of the Hermitian (full or sparse) operator operatorA using input matrix blockVectorX as an initial guess, without...


Platforms: Matlab

Matrix decomposition using, e.g. the Cholesky decomposition requires the correlation matrix to be positive definite. That is, the eigenvalues must all be positive. In finance, this is rarely the case, and one often observes negative eigenvalues, or zero eigenvalues. These two functions do...


Platforms: Matlab

The Spline Potential Eigenfunctions Model computes the Schr?*A*dinger equation energy eigenvalues and eigenfunctions for a particle confined to a potential well with hard walls at -a/2 and a/2 and a smooth potential energy function between these walls. The potential energy function is a...


Platforms: Mac