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wmbiff is a dock app that displays the total number of messages or the number of unread messages in different mailboxes. It supports up to 5 mailboxes. It is also possible to execute user-defined commands on new mail arrival (for example, play a .wav file).

Functions for Maximum Likelihood (ML) estimation and non-linear optimization, and related tools. It includes a unified way to call different optimizers, and classes and methods to handle the results from the ML viewpoint. It also includes a number of convenience tools for testing and developing your own models.

Biggles is a Python module for creating publication-quality 2D scientific plots. It supports multiple output formats (postscript, x11, png, svg, gif), understands simple TeX, and sports a high-level, elegant interface. It's intended for technical users with sophisticated plotting needs. The goal is to produce the best scriptable plotting program.

Cadabra is a symbolic computer algebra system (CAS) designed specifically for the solution of problems encountered in field theory. It has extensive functionality for tensor computer algebra, tensor polynomial simplification including multi-term symmetries, fermions and anti-commuting variables, Clifford algebras and Fierz transformations, component computations, implicit coordinate dependence, multiple index types and many more. The input format is a subset of TeX.

galculator is a GTK2/GTK3 based calculator with ordinary notation/reverse polish notation (RPN), a formula entry mode, different number bases (DEC, HEX, OCT, BIN) and different units of angular measure (DEG, RAD, GRAD). It supports quad-precision floating point and 112-bit binary arithmetic.

The Library allows exact computation with discrete random variables in terms of their distributions by using a monad. The monad is similar to the List monad for non-deterministic computations, but extends the List monad by a measure of probability. Small interface to R plotting.

Math::Calc::Units is a simple calculator that keeps track of units. It currently handles combinations of byte sizes and duration only, although adding any other multiplicative types is easy. Any unknown type is treated as a unique user type (with some effort to map English plurals to their singular forms). Seamus Venasse <svenasse@polaris.ca>

Combinatorics is the branch of mathematics studying the enumeration, combination, and permutation of sets of elements and the mathematical relations that characterize their properties. As a jumping off point, refer to: http://mathworld.wolfram.com/Combinatorics.html This module provides a pure-perl implementation of nCk, nPk, and n! (combination, permutation, and factorial, respectively).

Algorithm-Munkres is a perl extension for Munkres' solution to classical Assignment problem for square and rectangular matrices This module extends the solution of Assignment problem for square matrices to rectangular matrices by padding zeros. Thus a rectangular matrix is converted to square matrix by padding necessary zeros.

This is Math::BigInt::Pari, a plugin module for Math::BigInt that replaces Math::BigInt's core math routines with Math::Pari routines. This package contains a replacement (drop-in) module for Math::BigInt's core, Math::BigInt::Calc.pm. It needs the new versions of Math::BigInt and Math::BigFloat as they are from Perl 5.7.x onwards.