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The dynamic mathematics software Geonext establishes new ways of teaching and learning mathematics. It offers opportunities of visualisation that can't be realised on paper or blackboard and with traditional construction tools. Geonext enables autonomous and cooperative learning of mathematics in the classroom. It encourages an active discovering approach to mathematical thinking. Geonext can be used at school and at home for free (GPL). Therefore the software can be handed out to students without any copyright problems (GPL). Geonext can be used from elementary school up to calculus at high school and in teacher-training at university in a manifold and flexible way. -Andreas Fehlner fehlner@gmx.de

This library provides a number of common functions and types useful in statistics. We focus on high performance, numerical robustness, and use of good algorithms. Where possible, we provide references to the statistical literature. The library's facilities can be divided into four broad categories: * Working with widely used discrete and continuous probability distributions. (There are dozens of exotic distributions in use; we focus on the most common.) * Computing with sample data: quantile estimation, kernel density estimation, histograms, bootstrap methods, significance testing, and autocorrelation analysis. * Random variate generation under several different distributions. * Common statistical tests for significant differences between samples.

LTL is a C++ class template library for scientific computing which provides high performance via SSE3 floating point support for vector operations. Useful for array processing, image processing, FITS and ASCII I/O, and linear algebra (astronomical and scientific computing, in short). LTL provides dynamic arrays of up to 5-dimensions, subarrays and slicing, support for fixed size vectors and matrices including basic linear algebra operations, expression templates based evaluation, and I/O facilities for ascii and FITS format files. Users of the boost and blitz++ library may find the cross-pollination of these unique features to be fruitful.

LAPACK95 is a Fortran 95 interface to the Fortran 77 LAPACK library. It improves upon the original user-interface to the LAPACK package, taking advantage of the considerable simplifications which Fortran 95 allows. The design of LAPACK95 exploits assumed-shape arrays, optional arguments, and generic interfaces. The Fortran 95 interface has been implemented by writing Fortran 95 ``wrappers'' to call existing routines from the LAPACK package. This interface can persist unchanged even if the underlying Fortran 77 LAPACK code is rewritten to take advantage of the new features of Fortran 95.

Mpc is a C library for the arithmetic of complex numbers with arbitrarily high precision and correct rounding of the result. It is built upon and follows the same principles as Mpfr. The library is written by Andreas Enge, Philippe Theveny and Paul Zimmermann and is distributed under the Gnu Lesser General Public License, either version 2.1 of the license, or (at your option) any later version. The Mpc library has been registered in France by the Agence pour la Protection des Programmes on 2003-02-05 under the number IDDN FR 001 060029 000 R P 2003 000 10000.

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 fenv. On supported architectures, change the rounding mode of the floating point arithmetics (to nearest, up, down, to zero) or change the precision of the arithmetical operations (single, double, double extended). Experimentally test the properties of the floating point arithmetics.

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 image. The Octave-forge Image package provides functions for reading, writing, and processing images. The package supports almost all image formats through the use of ImageMagick. The package also provides functions for feature extraction, image statistics, spatial and geometric transformations, morphological operations, linear filtering, and much more.

Perl's built-in logical operators, C<and>, C<or>, C<xor> and C<not> support 2-value logic. This means that they always produce a result which is either true or false. In fact perl sometimes returns 0 and sometimes returns undef for false depending on the operator and the order of the arguments. For "true" Perl generally returns the first value that evaluated to true which turns out to be extremely useful in practice. Given the choice Perl's built-in logical operators are to be preferred -- but when you really want pure 2-degree logic or 3-degree logic or multi-degree logic they are available through this module

Delay is a program that counts down the number of seconds specified on its command line. In this way, it's sort of like the standard sleep(1) command, except for the fact that it provides feedback of the time remaining. Here some usage example: delay 1d 2:03:04.5 delay 1d 2h 3m 4.5s delay 93785.5 delay until 4 pm -- cdplay delay until noon tomorrow delay until midnight 4 october 2003 delay until now +5 minutes delay 15s -- top It allows for short, long, and customized messages for the display of the time remaining. - example of output : delay -v until 4 pm tomorrow Time Remaining: 1 days, 07:51:39.

CLEX (pronounced KLEKS) is a file manager with full-screen user interface. It displays directory contents, including file status details, and provides features like command history, filename insertion, or name completion, in order to help users to create commands to be executed by the shell. CLEX is versatile tool for system administrators and all users that utilize the enormous power of the command line. Its unique one-panel user interface enhances productivity and lessens the probability of mistake. There are no built-in commands; CLEX is an add-on to your favorite shell.