Difference Equations

Python Stencil Environment also know as PySE is a new python library for solving Partial Differential Equations with the Finite Difference Method (FDM). This is still a quite new library, and the current release must be considered as beta software. It is quite rough around the edges,... Platforms: *nix

Visual difference metrics can predict whether differences between two images are visible to the human observer or not. Such metrics are used for testing either visibility of information (whether we can see important visual information) or visibility of noise (to make sure we do not see any... Platforms: *nix

This script allows you to run a linear equations solver using eval and built-in complex numbers.One could add one more line to insert '*' where needed, i.e. "100x" -> "100*x", add some input validation, in particular check whether the equation is actually linear and not quadratic or cubic, and... Platforms: Windows, Mac, *nix, Python, BSD Solaris

Lagrange is a function that calculate equations of motion (Lagrange's equations) d/dt(dL/d(dq))- dL/dq=0. It Uses the Lagrangian that is a function that summarizes thedynamics of the system. Symbolic Math Toolbox is required. Platforms: Matlab

Graphical user interface (GUI) is used to solve up to two ordinary differential equations (ODEs). Results can be plotted easily. Choose between MATLAB's ode45 (non-stiff solver) or ode15s (stiffer solver).This is primarily a teaching tool. Platforms: Matlab

Egberta the macaw has a nest full of tasty eggs that Cliff the climber wants to eat. Unfortunately, the eggs are on top of a tall cliff. Help Cliff reach the top and get the eggs by completing equations. Beware though! Egberta will drop eggs on Cliff's head if you waste too many eggs! This game... Platforms: iOS

The program solves algebraic equations. It displays the graphic of the function and a list of the real roots of the equation. It also includes the option to evaluate a function and its derivative. The application has a simple wizard-driven interface.The context sensitive help will guide you step... Platforms: Windows

The program PEEI 3.0.0.0 calculates a numerical solution of almost all the systems of partial differential equations who have number of equations equal or greater of the number of unknown functions. Platforms: Windows

ODEcalc for Windows: An Ordinary Differential Equation (ODE) Calculator! State your equation and boundary or initial value conditions and it solves your problem. Plots solution y and derivative ydot versus x. Solves most Boundary Value Problems (BVP) and Initial Value Problems (IVP) for... Platforms: Windows, Windows 8, Windows 7, Windows Server

Chemical Equation Expert is an integrated tool for chemistry professionals and students. You'll find complicated work such as balancing chemical equations and related calculations so easy and even enjoyable! Key Feafures - 1. An intelligent balancer Chemical Equation Expert balances chemical... Platforms: Windows

X2 - Equations calculates the real roots of rational second grade equations, showing the results with fractions (Yeah!) It also gives geometric info related to the parabola. Platforms: Windows

Thus, a Q program or "script" is simply a collection of equations which are used to evaluate expressions in a symbolic fashion. The equations establish algebraic identities and are interpreted as rewriting rules in order to reduce expressions to "normal forms". For instance, here is how you... Platforms: *nix

Difference Bound Matrices (DBMs) are efficient data structures to represent clock constraints in timed automata. They are used in UPPAAL as the core data structure to represent time. This library features all the common operations such as up (delay, or future), down (past), general updates,... Platforms: *nix

Concepts project is a C++ class library for solving elliptic partial differential equations (PDEs) numerically. The design principle is the transfer of mathematical objects and grammar used to specify mathematical and numerical models of physical systems isomorphically into simulation software.... Platforms: *nix

BrightMaRe project is a tool that translates LaTeX equations to ASCII/UTF-8 text.. Platforms: *nix

Laeqed is a Latex equation editor specifically targeted at producing PNG images of math equations for use on web pages. Laeqed runs wherever Java and Latex runs, i.e. Linux, Windows, Mac... The Latex equation, preamble, postamble and dvipng options are saved with the PNG as meta data. This... Platforms: *nix

XMDS is a code generator that integrates equations. You write them down in human readable form in a XML file, and it goes away and writes and compiles a C++ program that integrates those equations as fast as it can possibly be done in your architecture. Platforms: *nix

PETSc is a suite of data structures and routines for the scalable (parallel) solution of scientific applications modeled by partial differential equations. PETSc library employs the MPI standard for all message-passing communication. PETSc is easy to use for beginners. Moreover, its careful... Platforms: *nix

Gerris project is an Open Source Free Software library for the solution of the partial differential equations describing fluid flow. Gerris is supported by NIWA (National Institute of Water and Atmospheric research) and by the Marsden Fund of the Royal Society of New Zealand. The code is... Platforms: *nix

WDSolve is a black box solver for nonlinear hyperbolic partial differential equations. WDSolve is based on the Wave Digital method, leading to explicit finite difference schemes with superior stability properties. Platforms: Windows