 Trigonometry Challenge  ETCAI Products
A program designed to supplement your classroom and textbook instruction in numerical trigonometry. A trial program is available for download. The generic topics can be used with most textbooks. For Windows 95/98/98SE/me/XP/2000/NT4.
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 TTC (Tools of Tensor Calculus)  A. Balfagón, P. Castellví, X. Jaén
A Mathematica package for doing tensor and exterior calculus on differentiable manifolds, of interest to the scientist working on any field where tensor calculus is needed. TTC can also be interesting for teaching purposes. Articles, links, and a tutorial.
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 Turbo Tables Educational Software  AGoGoGadget
Intended to teach multiplication techniques especially useful for products larger than 12x12. Includes teaching module, timed trial, and game for practicing your multiplication skills. Free demo available. Available for Windows XP and Pocket PC platforms.
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 UCLA Statistics Homepage
Departmental info; paid or free consulting, tutoring; statistics preprints; theses and dissertations; UCLA statistics calculators; Journal of Statistical Software; UCLA electronic textbook; case studies and data sets; Center for Teaching Statistics; UCLAStat
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 UltimaCalc: the Ultimate Algebraic Graphing Calculator  Anand Shraddhan
An algebraic graphing calculator for Windows that plots functions, creates charts, and calculates and displays various forms of regression. Also calculates standard deviation and related statistics, solves triangles, and finds roots of polynomials.
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 Ultra Fractal  Frederik Slijkerman
A Windows shareware program that creates images of fractals, allowing you to write your own fractal formulas, coloring algorithms, and geometric transformations in a simple formula language. A layering feature lets you combine different fractals and coloring
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 Undergraduate Research Project in Random Tilings  Propp, Wilson
This project investigates different regions of random tilings of nxn squares with 1x2 dominoes: square, hexagon, fortress, dungeon, and Aztec diamond (the set of lattice squares completely inside a square tilted 45 degrees, discovering that the dominoes
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 Unfolding Orbifolds  Heidi Burgiel; The Geometry Center
A study of how a pattern can be reconstructed from an orbifold, using both handson exploration and the computer program TesselMania!. These activities are a good introduction to the movie Shape of Space. From Math 5337, Technology in the Geometry Classroom,
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 Unifpack (Web version 2.0)  Carlos O'Ryan Lira
A set of programs and C libraries for studying Riemann Surfaces with symmetry. Unifpack accepts a presentation of a finite group and calculates the Cayley graph of the group for that presentation. If the presentation is "admissible," Unifpack can calculate
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 UnitMath Example: Geometric Solids  Paul M. Price
Examples of how to use UnitMath with geometric solids: box (rectangular parallelepiped), cone (right circular), cylindrical solids (can  right circular cylinder; horizontal cylinder, partly filled), oblate spheroid, prolate spheroid, spherical solids
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 UnitMath  Paul M. Price
A calculation utility program for Mac or Windows, designed to answer questions written as equations made up of numbers, units (a unit is a quantity in terms of which the magnitudes of other quantities of the same type can be stated), precision, and operators.
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 Units of Measurement for Ada  Dmitry A. Kazakov
Public domain software for dealing with physical measurement units. The library provides physically correct unit arithmetic and tools for input and output of units, which including support of various irregular units. As an illustrative example a platformindependent
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 Universal Framework for Science and Engineering  Part 5: Category theory  Petr Ivankov
Software for use in Category Theory. The web site describes its function and operation.
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 Unstructured Grids (UG)  Institut für Computeranwendungen, UniversitU7auml;t Stuttgart
A flexible software tool for the numerical solution of partial differential equations on unstructured meshes in two and three space dimensions using multigrid methods. Its basic design is flexible enough to support many different discretization schemes.
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 U.S. Energy Information Administration (EIA)
Links to facts/statistics on energy topics from A to Z: acid rain and air conditioning to world energy data on coal consumption, electricity prices, natural gas and oil consumption, and more. With tables, graphs, articles (some in PDF format), a Windows
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 Virtual Optima  Tony Hürlimann, Chris Hürlimann
A company offering consultancy, software (a linear programming language for mathematical optimization and modeling), and sport league schedules. It also offers a book of optimization problems, with sample problems available online.
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 Visions Of Chaos  Jason
A Windows application that generates fractals, cellular automata, attractors and other chaos simulations. Supports 2D images, 3D images and AVI movie creation. With galleries of fractals and Mandelbulbs; cellular automata and Lsystems music; and chaos
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 ViSta: the Visual Statistics System  Forrest W. Young
ViSta features visual tools for revealing structure in data; for showing the results of statistical analyses; for guiding the analyst through an analysis; and for structuring the analyst's data analysis process. ViSta is designed for a wide range of users,
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 VisuAlgo  Halim, Steven and Felix
"Visualizing data structures and algorithms through animation." Explore, watch electures, and solve problems on sorting, bitmask, linked lists, hash tables, binary heaps, binary search trees, graph structures, UnionFind DS, segment trees, Fenwick trees,
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 VisualMath  G. Fonthal, VisualPhysics
Math shareware programs that feature visual and interactive techniques under Windows 95 may be downloaded from this site: for numbers (real, complex, binary); set theory (Venn diagrams); geometry (shapes and areas, 3D Geometry); algebra (equations, polynomials,
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 Voce Viva ScriviFacile  Danieli Alessandro, SLD Software (Scribit&Legit&Dicit)
Interactive software for the four basic operations and algebraic expressions, primarily in Italian. "Dimostrazione del software Voce Viva ScriviFacile, con sintesi vocale e con comunicazioni vocali interattive che guidano nello svolgimento delle divisioni
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 Voronoi Diagrams of Points, Segments and Arcs in 2D  Martin Held
VRONI is a software package for computing Voronoi diagrams of points and line segments in the Euclidean plane. Based on the Voronoi diagram, VRONI can also compute offset patterns or perform buffering. Since VRONI computes a Voronoi diagram of points
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 The Voronoi Web Site  Christopher Gold; Université Laval
A site established to encourage communication between workers (academic or commercial, users or developers), using Voronoi or Delaunay methods of spatial analysis, in the hope that the exchange of ideas in this field among a wide variety of users will
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 WAVELAB 802 for Matlab5.x  Donoho, Duncan, Huo, Levi
WaveLab is a collection of Matlab functions that have been used by the authors and collaborators to implement a variety of computational algorithms related to wavelet analysis. A partial list of the techniques available includes orthogonal wavelet transforms,
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 Wavelet Resources  Mathematics Dept., Yale University
Preprints and software for wavelets available from the Yale Mathematics Department.
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 Wavelets and Multiscale Methods in Numerical Analysis and Simulation  TMR Network, Silvia Bertoluzza
Links to Reports, Participants, Training Activities, Research Activity, Open Post Doctoral Positions, Paris Team Homepage  Access to the Software DATABASE, and the TMR Network News Server.
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 WebCab XL  WebCab Components
Range of math and finance techniques implemented within a free Excel addin for Windows. Techniques include: interpolation, probability and statistics, optimization, portfolio theory, options and futures pricing theory. Menu driven application development,
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 Welcome to PERTH: PEerless on EaRTH  Dave Watson
Dave Watson's main interest is computational geometry, and he specializes in spatial interpolation. Books/software on Contouring (a survey of published bivariate contouring and interpolation methods), Tessellations, Spherical Tessellations, Isolines,
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 Welcome to the World of Petri Nets  CPN Group, University of Aarhus, Denmark
Petri Nets is a formal and graphical language which is appropriate for modeling complex systems with concurrency. It has nothing to do with network communication but has proven useful for describing, analysing, and verifying protocols typically used in
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 The West Point Bridge Design Contest  United States Military Academy, West Point, New York
A challenge for U.S. students age 13 through grade 12. The purpose of the contest is to provide middle school and high school students with a realistic, engaging introduction to engineering. Learn about how engineers use the computer as a problemsolving
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 WIMAT  Learning Linear Algebra with the PC  Janiszczak, Knörr
A free DOS and Windows learning and training program, with routines that demonstrate important algorithms or procedures in linear algebra and linear programming such as Gaussian algorithm, procedures for solving linear equations and inverting matrices,
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 WinKE: A Proof Assistant for Teaching Logic  Ulrich Endriss
An interactive proof assistant based on the KE calculus, a refutation system that combines features from Smullyan's analytic tableaux and Gentzen's natural deduction. The software has been designed to serve as a tutoring system to support the teaching
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 WINKS & KWIKSTAT Statistics Software  TexaSoft
Statistical data analysis software for Windows (WINKS) and DOS (KWIKSTAT). Programs in zipped format to download; free evaluation copy of any program you are interested in seeing. Courses on Statistical Data Analysis and QS9000 Statistical Techniques
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 WIRIS  Ramon Eixarch and Daniel Marquès, Maths for More S.L.
WIRIS math tools include a formula editor, online CAS (Computer Algebra System) and advanced math assesment tools. WIRIS tools are easily integrated into Moodle and other LMS. You can experiment with all WIRIS tools running in a Moodle environment.
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 The Witt Design  Ashay Dharwadker
The Steiner system S(5,8,24) is explicitly constructed. A C++ program to
generate the Golay code and the Witt design is provided.
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 Worksheet Creators  Dan Perkins
Flashbased Worksheet Creators built to easily and quickly generate diverse worksheets for addition, subtraction, multiplication, and division. Shareware.
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 World of Fractals  Adam Lerer
A general site about fractals, including image galleries, animations, descriptions of different types of animations, explanations, programs to download, and related links. See Types of fractals; read Understanding Fractals (The Basics, The Mathematics,
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 wrotniak.net  J. Andrzej Wrotniak
Includes shareware and freeware programs for Windows written by Wrotniak: scientific and regular calculators, a spherical geometry calculator, a logic and strategy game, a statistics graphing program, and a simple program to compute the area of a polygon.
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 XLfit: Curve Fitting in Excel  ID Business Solutions
XLfit® is a Microsoft® Excel addin that brings the power of scientific mathematics and statistics to Excel, together with supporting charting capabilities. There are over 70 outofthebox models for both linear and nonlinear curve fitting available
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 XLpert  Choong Koon Wai, XLpert Enterprises
Shareware and freeware: 4Cast XL (a neural network addin for MS Excel); xl bit (a genetic algorithm addin for MS Excel); nn_Solve (build neural network models with Excel Solver (freeware)); KaotiXL (rescaled range analysis ( Hurst exponent ) with MS
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 The XYZ GeoBench for experimental geometric computation  Dr. Peter Schorn
The XYZ GeoBench (eXperimental geometrY Zurich) is a workbench for geometric computation on Macintosh computers. It provides an interactive user interface similar to a drawing program which can be used to create and manipulate geometric objects such as
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 Yarrow Home Page  Jan Zwanenburg
A proofassistant for Pure Type Systems (PTSs). In Yarrow you can experiment with various pure type systems, representing different logics and programming languages. A basic knowledge of Pure Type Systems and the CurryHowardde Bruijn isomorphism is
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 Yves Gallot's Proth.exe and Cunningham Chains  Warut Roonguthai
A collection of interesting Cunningham chains of large prime numbers (with a link to an explanation of Cunningham chains), and how to find some of them using Yves Gallot's Proth.exe, a Windows 95/NT program.
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 ZapaGraph  Brain Waves Software
A graphing program for use in the teaching and learning of high school mathematics and Calculus. Features include the ability to transform any
relation, take the nth derivative of any function, and compose any two functions in nine different ways. The
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 Z Systems, Inc.
Developers of data analysis, acquisition, and visualization software. Evaluation copies available for download. Graphing and data analysis software includes Graph++, a graphing application that evaluates equations and mathematical functions graphically.
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 Zuk  Jan Bobrowski
Download an experimental version of a dynamic Mandelbrot/Julia fractal viewer for DOS.
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