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optizelle is a software library designed to solve nonlinear optimization problems. Four types of problem are considered: unconstrained, equality constrained, inequality constrained and constrained. Constraints may be applied as values of functions or sets of partial differential equations (PDEs).
Solution algorithms such as the preconditioned nonlinear conjugate gradient method, sequential quadratic programming (SQP) and the primal-dual interior-point method are made available. Interfaces are provided for applications written in C++ and Python. Parallel computation is supported via MPI.
CLP is a high quality linear programming solver. Its main strengths are its dual and primal Simplex algorithms. It also has a barrier algorithm for linear and quadratic objectives. There are limited facilities for nonlinear and quadratic objectives using the Simplex algorithm.
muParser is an extensible high performance math parser library. It is based on transforming an expression into a bytecode and precalculating constant parts of it.
MUMPS (MUltifrontal Massively Parallel sparse direct Solver) solves a sparse system of linear equations A x = b using Gaussian elimination.
GNU JACAL is an interactive symbolic mathematics program based on Scheme. It manipulate and simplify a range of mathematical expressions such as equations, scalars, vectors, and matrices.
Deal.II is a C++ program library targeted at the computational solution of partial differential equations using adaptive finite elements. The main aim of deal.II is to enable rapid development of modern finite element codes, using among other aspects adaptive meshes and a wide array of tools often used in finite element programs.
PETSc, the Portable, Extensible Toolkit for Scientific Computation, is a suite of data structures and routines for the scalable (parallel) solution of scientific applications modeled by partial differential equations. It employs the MPI standard for all message-passing communication. petsc4py provides Python bindings to almost all functions of PETSc.
CAMD is a set of routines for ordering a sparse matrix prior to Cholesky factorization (or for LU factorization with diagonal pivoting). It is a variant of AMD which has the the option to apply constraints to the ordering.
This is a C version of the minpack minimization package. It has been derived from the fortran code using f2c and some limited manual editing. Extern C linkage permits the package routines to be called from C++.
SUNDIALS is a family of software packages implemented with the goal of providing robust time integrators and nonlinear solvers that can easily be incorporated into existing simulation codes.
PETSc, pronounced PET-see (the S is silent), is a suite of data structures and routines for the scalable (parallel) solution of scientific applications modeled by partial differential equations.
SMTInterpol is an SMT solver, that can compute Craig interpolants for various theories.
feedgnuplot is a tool to plot realtime and stored data from the command line, using gnuplot. It can read data from a pipe or file, make a variety of transformations, and render the result in the terminal or with an external viewer.
HDF4 is a library and multi-object file format for storing and managing data between machines. HDF4 is an older hierarchical data format, incompatible with HDF5.
MiniZinc is a high-level modeling language for constraint satisfaction and optimization problems. Models are compiled to FlatZinc, a language understood by many solvers.
CyLP is a Python interface to COIN-OR’s Linear and mixed-integer program solvers (CLP, CBC, and CGL). CyLP’s unique feature is that you can use it to alter the solution process of the solvers from within Python. For example, you may define cut generators, branch-and-bound strategies, and primal/dual Simplex pivot rules completely in Python.
Maxima is a system for the manipulation of symbolic and numerical expressions. It yields high precision numeric results by using exact fractions, arbitrary precision integers, and variable precision floating point numbers.
Gfan is a software package for computing Gröbner fans and tropical varieties.
DUNE, the Distributed and Unified Numerics Environment is a modular toolbox for solving partial differential equations (PDEs) with grid-based methods. It supports the easy implementation of methods like Finite Elements (FE), Finite Volumes (FV), and also Finite Differences (FD).
This package contains the basic DUNE grid classes.
CVXOPT is a package for convex optimization based on the Python programming language. Its main purpose is to make the development of software for convex optimization applications straightforward by building on Python’s extensive standard library and on the strengths of Python as a high-level programming language.
Veusz is a scientific plotting and graphing program with a graphical user interface, designed to produce publication-ready 2D and 3D plots. In addition it can be used as a module in Python for plotting. It supports vector and bitmap output, including PDF, Postscript, SVG and EMF.
GLPK is a C library for solving large-scale linear programming (LP), mixed integer programming (MIP), and other related problems. It supports the GNU MathProg modeling language, a subset of the AMPL language, and features a translator for the language. In addition to the C library, a stand-alone LP/MIP solver is included in the package.
Calc is an arbitrary precision arithmetic system that uses a C-like language. It can be used as a calculator, an algorithm prototyper and as a mathematical research tool, and it comes with built in mathematical and programmatic functions.
Gnuplot is a portable command-line driven graphing utility. It was originally created to allow scientists and students to visualize mathematical functions and data interactively, but has grown to support many non-interactive uses such as web scripting. It is also used as a plotting engine by third-party applications like Octave.