Mathematics

Zimpl is a little language to translate the mathematical model of a problem into a linear or (mixed-) integer mathematical program expressed in.

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Developer: Thorsten Koch
License: GNU General Public License (GPL)
Operating System: OS Independent

UMFPACK is a set of routines for solving unsymmetric sparse linear systems, Ax=b, using the Unsymmetric MultiFrontal method.

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Developer: Timothy A. Davis, University of Florida
License: GNU General Public License (GPL)
Operating System: OS Independent

Organization for Free Software in Education and Teaching.

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Developer: ofset
License: GNU General Public License (GPL)
Operating System: All BSD Platforms (FreeBSD/NetBSD/OpenBSD/Apple Mac OS X), All POSIX (Linux/BSD/UNIX-like OSes), FreeBSD, Linux, GNU Hurd

GraphCalc is a very gui graphing calculator.

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Developer: gcalc
License: GNU General Public License (GPL)
Operating System: All 32-bit MS Windows (95/98/NT/2000/XP), OS Independent (Written in an interpreted language)