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Emc2 is a portable, interactive, graphical editor of two-dimensional mesh geometries. It can create and modify geometries (as in CAD), and define line discretizations, subdomains, and reference numbers (to take into account boundary conditions and material properties). Grid and Delaunay-Voronoi meshes composed of triangles or quadrilaterals can be regularized, rotated, and modified via the addition, removal, or moving of vertices. It is suggested that users also install the math/bamg port.

fxt is a library package (coming as C++ source code) containing various algorithms for: - Fast Fourier Transform (FFT) incl. real-vlued, - multidimensional and weighted variants. - Fast Hartley Transform (FHT) - Number Theoretic Transform (NTT), Fast Walsh Transform. - Convolution (cyclic, linear and weighted), - correlation and power spectrum. - Fast Haar Transform, Fast Wavelet Transform - Mass storage convolution and fast multiplication routines. - Sine- and cosine transform (DCT, DST), Fast Z-Transform (FZT)

Givaro is a C++ library for arithmetic and algebraic computations. Its main features are implementations of the basic arithmetic of many mathematical entities: prime fields, extension fields, finite fields, finite rings, polynomials, algebraic numbers, arbitrary precision integers and rationals (via C++ wrappers over gmp). It also provides data structures and templated classes for the manipulation of basic algebraic objects, such as vectors, matrices (dense, sparse, and structured), univariate polynomials, and recursive multivariate polynomials.

igraph is a free software package for creating and manipulating undirected and directed graphs. It includes implementations for classic graph theory problems like minimum spanning trees and network flow, and also implements algorithms for some recent network analysis methods, like community structure search. igraph contains functions for generating regular and random graphs, manipulating graphs, assigning attributes to vertices and edges. It can calculate various structural properties, includes heuristics for community structure detection, supports many file formats.

The JTS Topology Suite is an API of 2D spatial predicates and functions. It has the following design goals: * JTS conforms to the Simple Features Specification for SQL published by the Open GIS Consortium * JTS provides a complete, consistent, robust implementation of fundamental 2D spatial algorithms * JTS is fast enough for production use * JTS is written in 100% pure Java(TM) * JTS is open source (under the LGPL license)

Lambda is a lambda calculus interpreter. It also will convert lambda expression into the combinators S, K, and I. Current features: * Load predefined lambda expression * Many definitions provided: numbers Y fact map iszero list 1st 2nd 3rd ADD MUL EXP list suc pred . . . * Automatic number definitions. * Interpret lambda expressions. * Single step interpretation. * Normal or application order reductions. * Variable extraction (Conversion to S K I) * List definitions. * Some lambda calculus theory.

A Double-Double and Quad-Double Arithmetic library. Double-double and quad-double numbers are unevaluated sum of two and four IEEE doubles capable of representing 106 and 212 bits of significand, respectively. The library is written in C++, taking full advantage of operator overloading. C, Fortran 77, and Fortran 90 interfaces are also provided. This work was done at Lawrence Berkeley National Laboratory, NERSC Division, Yozo Hida with Xiaoye S. Li and David H. Bailey.

This software calculates a normalized version of the classical spectral test for linear congruential pseudorandom number generators (LCGs), where the shortest vector is replaced by an approximation obtained with the Lenstra-Lenstra-Lovasz basis reduction algorithm, which can be calculated in polynomial time. The code is able to test in up to 24 dimensions, and includes an example of how to use the test to search for good LCG parameters.

The octave-forge package is the result of The GNU Octave Repositry project, which is intended to be a central location for custom scripts, functions and extensions for GNU Octave. contains the source for all the functions plus build and install scripts. This is dicom. Digital communications in medicine (DICOM) file io. Depends on Grassroots DICOM (GDCM). This package is not available in repos for all distros. Contributors: Judd Storrs, Kris Thielemans.

The octave-forge package is the result of The GNU Octave Repositry project, which is intended to be a central location for custom scripts, functions and extensions for GNU Octave. contains the source for all the functions plus build and install scripts. This is fits. The Octave-FITS package provides functions for reading, and writing FITS (Flexible Image Transport System) files. The package supports uses the libcfitsio library.