 Goldbach's Prime Pairs  Ivars Peterson (MathTrek)
Prime numbers serve as building blocks in the mathematics of whole numbers. Evenly divisible only by themselves and one, primes are a rich source of speculative ideas that mathematicians often find simple to state but difficult to prove. The Goldbach
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 The Golden ratio  MacTutor Math History Archives
Linked essay on the history of the golden ratio (golden number, golden section), from Euclid through Martin Ohm's book, Die reine ElementarMatematik. With references and other related web sites.
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 The Golden Section Ratio: Phi  Ron Knott
Contents: What is the Golden Ratio (or Phi)?  A simple definition of Phi, A bit of history; Phi to 2000 decimal places; Phi and the Fibonacci numbers  Another definition of Phi, A formula for Phi using a continued fraction, Rational Approximations
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 The Golden Section, Related to Music and Natural Sciences  Martin Morgenstern
An extended bibliography related to the golden section in music, mathematics, architecture, biology, etc. Articles and books are listed, and linked to Amazon.com or other sources for purchase where possible.
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 GoodQuestions Project  Dept. of Mathematics, Cornell University
The GoodQuestions project seeks to improve college calculus instruction by adapting two methods developed in physics instruction — ConcepTests and JustinTimeTeaching. GoodQuestions is a pedagogical strategy that aims to raise the visibility of the
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 Google
A search engine that analyzes the way Web pages are linked to one another and automatically generates lists of Web resources based on frequency of linking.
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 Google Calculator
Google's calculator feature evaluates math expressions. The google.com and the Google Toolbar search boxes now handle queries such as: 56*78, half a cup in teaspoons, (G * mass of earth)/(radius of earth ^ 2), and 1.21 GW / 88 mph. Google provides instructions
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 Google Groups Discussion: TINspire  Rex Boggs, moderator
For users of the TINspire handheld, Rex Boggs has set up a moderated discussion group at Google Groups. The purpose of the discussion is to share knowledge and problems to make the technology more productive, enjoyable and enlightening. If you are interested
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 Google Public Data Explorer  Google Labs
The Google Public Data Explorer is available for beta testing and comment. It is designed to make large datasets easy to explore, visualize and communicate. As the charts and maps animate over time, the changes in the world become easier to understand.
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 Google Scholar  Google Labs
Google Scholar is a subset of the larger Google search index, consisting of fulltext journal articles, technical reports, preprints, theses, books, and other documents. Use the Advanced Scholar Search to confine search results to engineering, computer
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 Googol+: Arbitrary Precision Calculator for Windows  Atelier Web
Arbitrary Precision calculator handlings a large range of operations from basic to advanced like factoring and continued fractions.
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 Googolplex  Frank Pilhofer
The American mathematician Edward Kasner once asked his nineyearold nephew to invent a name for a very large number, ten to the power of one hundred; and the boy called it a googol. He thought this was a number to overflow people's minds, being bigger
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 Gordon Royle's Homepage: Research  Gordon Royle
Catalogues and tables of interesting combinatorial objects: small graphs, cubic graphs, symmetric cubic graphs, vertextransitive graphs, Cayley graphs (by group), vertextransitive cubic graphs, cubic cages and higher valency cages, planar graphs, cubic
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 Got Math?  Dave Radcliffe
Blog by a community college math instructor and selfdescribed "GeoGebra fanatic." Posts, which date back to December, 2010, have included "Stacking cannonballs," "Counting with Integrals," "A Paradoxical Dissection," "Gelfand's Question," "Imagining
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 Government Affairs and Education (AMS)  American Mathematical Society
Government Affairs: news from Washington on science funding; calls for action; policy statements; recent statements by the mathematical community; federal budget information; how to contact Congress; science policy events; and a link to the AMS Committee
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 Government Communications Headquarters  Government Communications Headquarters, United Kingdom
British intelligence: take a brief, illustrated tour of GCHQ history through World War I, World War II and cracking the German Enigma code, the Cold War, and the post Cold War world; read about career opportunities for mathematicians and others; apply
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 Gowers's Weblog  Timothy Gowers
Blog by a Cambridge University professor interested in analysis, combinatorics, arithmetic combinatorics, and "general questions about mathematics, and how it is discovered and transmitted  hence this blog." Posts, which date back to September, 2007
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 Graceful Graphs  Michael Brundage, Dept. of Mathematics, Univ. of Washington
A paper about current studies on graceful labeling of graphs. Of particular interest is the conjecture that all trees are graceful graphs. Includes: definition of a graceful graph; methods of labeling graphs; how many graceful graphs are there?; known
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 GRACE: Graphical Ruler and Compass Editor  Hertzmann, Warren, Goldan, Felleisen; Dept. of Computer Science, Rice University
Interactive Euclidean Geometry: using a Java applet, this course focuses on a classical topic: the ruler and compass constructions of Euclid. GRACE allows the student to define constructions and their associated proofs interactively. This site contains
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 Grad Blog  American Mathematical Society
A "blog for and by math grad students." Posts, which date back to February, 2009, have included "Finding an Advisor," "Navigating Seminars — A First Year's Perspective," "Five Pieces of Advice for the Beginning Teaching Assistant," "Choosing a graduate
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 Graduate Programs in Mathematics Learning and Teaching  Drexel University
Drexel University’s online Master of Science in Mathematics Learning and Teaching represents a highly evolved synthesis of researchbased best practices and a collaboration between the School of Education’s leaders in the field of mathematics education
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 Graduate Recruitment and Actuarial Jobs  Hewitt UK
Graduate career opportunities and internships with Actuarial Jobs at Hewitt UK.
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 Graduate School in Your Future?  Dianne Prost O'Leary
Written by a former director of undergraduate studies attempting to smoothe the transition from undergraduate to professional, this document offers advice to students on entering, surviving, and thriving during graduate study and beyond. Graduate School
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 Graduate Tutor  GraduateTutor.com
Tutoring by professionals from various fields in math, statistics, statistical data analysis, and decisionmaking for business school students and working professionals. Currently topics include accounting, statistics, GMAT, GRE, business math, Excel
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 Grafbourse: Stock technical analysis and statistics
Applied, comprehensive, technical analysis and statistics. Simple decision making help. In English and French.
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 GrafEq Gallery  Pedagoguery Software
A gallery that demonstrates the visual range of graphs that can be produced using GRAFEQ graphing software, with a rogue's gallery of troublesome graphs. The archived graphs are possible because of the expressive power of general implicit relations. Each
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 Grafica Obscura  Paul Haeberli
An evolving computer graphics notebook: a compilation of technical notes, pictures and essays. Contents include: Paper and Plotter: A 3D Surface; Laser Cutting for Rapid Manufacturing; Geometric Paper Folding: Dr. David Huffman; Paper and Light (An inexpensive
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 Grand Illusions  Hendrik Ball
A "site for the enquiring mind, with optical illusions, scientific toys, visual effects, and even a little magic." Includes a number of feature articles on vision, photography, mirrors, optical toys, movies, etc. See, in particular, the geometrical optical
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 Grandma Got STEM  Rachel Levy
Levy, a Professor in the Mathematics Department at Harvey Mudd College, blogs to collect public awareness and art projects that use grandmothers' pictures, names, and connections to science, technology, engineering, and mathematics (STEM) in order to
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 Grant Keady
Grant Keady, an adjunct professor at Curtin University, researches fluid dynamics and related subjects, with forays into computer algebra. Some of his papers are available online in PostScript, gzipped PostScript, PDF, .dvi, or Mathematica notebook format.
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 Granular Volcano Group  Sebastien Dartevelle
The site aims to describe and understand granular flows, fluid dynamic, supercomputer modeling, grain features, and behaviors in volcanology. Includes descriptions of frictional, kinetic, and collisional rheologies of granular matter, and definitions
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 GraphCalc  Mike Arrison
A graphing calculator program for Windows. Features include threedimensional graphing, calculus, and statistics. Download a shareware version, read online documentation, request a feature, or read about the authors.
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 Graph Coloring Page  Joseph Culberson
An ongoing project to provide graph coloring resources. Contents include: Graph Coloring Bibliography; Graph Coloring Programs; Graph Generator Programs; Phase Transition in Coloring, with Data Files; Links to Other Sources; Links to Other Coloring Material;
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 Graphe Easy  Olivier Ansquer
Featurerich yet easytouse 2d graphplotting Windows software. Demo version available. It allows users to draw many graph types (Cartesian, polar, parametric coordinates) and many other graphs such as conics, integrals, inequalities, or sequences. It
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 Graph Explorer  Alan Cooper, Dept. of Mathematics & Statistics, Langara College
A JAVAbased graphing utility. This applet is designed to allow you to zoom in and out smoothly, or to pan across the graphs of functions that you define. Use it to display the graphs of functions that you want to study, either individually or in families
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 Graph Galleries  Microcal Software, Inc.
Select one of 5 Subject Specific Graph Galleries to view an array of industryspecific graphs, or explore graph types (3D surface graphs; contour graphs; bar, box, & column gallery; line gallery; line & symbol gallery; or scatter gallery). See
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 Graphical Iteration  Mark Scheuern
This applet demonstrates graphical iteration, using the quadratic iterator xn+1 = fa(xn) , fa(x) = ax(1x), 0<=a<=4 and iterating for twenty steps. Try different values of x0 and a. Note that some values will produce a stable state and others result
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 Graphic animations of functions of a complex variable  Robert DuBeau
Six graphic animations extending in each case, by graphing, an initial grid of either a "square" or a "round" variety of parabolas representing the conformal image of z^2, then smoothly "rotating" this grid in complex 2space (CxC) until the conformal
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 Graphics Archive  The Geometry Center
General interest images of an artistic nature, or of general interest to the public, including fractals, digital art, etc.; Special Topics  images created during research projects at the Geometry Center; Video Productions  images from videos produced
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 Graphics Calculator Information (Mathematics Archives)  University of Tennessee, Knoxville (UTK)
Links to calculator projects, programs, and utilities; lab activities and calculator worksheets; calculator FAQs; and other calculator sites.
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 Graphics for Complex Analysis  Douglas N. Arnold; Institute for Mathematics and its Applications
A collection of graphical demonstrations of concepts in complex analysis developed for a course at McAllister. Most are animated so that the original curves are continuously deformed into the image curves, and the eye can follow which points move where;
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 Graphics for Complex Analysis (Java version)  Douglas N. Arnold; Institute for Mathematics and its Applications
A collection of graphical demonstrations using Java of concepts in complex analysis developed for a course at McAllister. Most are animated so that the original curves are continuously deformed into the image curves, and the eye can follow which points
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 Graphics for the Calculus Classroom (Java version)  Douglas N. Arnold; Institute for Mathematics and its Applications
Excerpts with Java animations from a collection of graphical demonstrations developed for first year calculus. Includes: Differentials and differences, computing the volume of water in a tipped glass, Archimedes' calculation of pi, how the ball bounces,
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 Graphing Applets for Calculus  Eric A. Carlen
A collection of calculus applets, two packages of Java classes used for writing such applets, and full documentation of the packages and their use, with source code for all the sample applets. Applet topics include: the basins of attraction for Newton's
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 Graphing Calculator 3D  Runiter Company
Makers of visual, tutorial, and computational software such as Smart Math Calculator, Graphing Calculator 3D, A&G (algebra and geometry) Grapher, Statistics Problem Solver, and Calculus Problem Solver.
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 Graphing Calculator for Mac and Windows  Pacific Tech
Graphing Calculator calculates and displays two and threedimensional mathematical objects easily, and saves animations as QuickTime movies. The site includes a list of features, a guided tour, a picture gallery, a free demo, and ordering capabilities,
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 Graphing Calculator Help  PearsonHall Education
Help using the calculator models TI82, TI83, TI85, TI86, TI89, TI92, HP48G, CFX9850 GaPlus, Sharp EL9600C, and Casio FX2. Select a model to display PrenticeHall's help topics in alphabetical order, then click the topic to see specific instructions.
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 Graphing Calculator  Pacific Tech
Graphing Calculator is a tool for quickly visualizing math: type an equation and it is drawn for you without complicated dialog boxes or commands. Graphing Calculator 2.2, a commercial release, features symbolic and numeric methods for visualizing two
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 Graphing Cubic Polynomials  Jim Carlson, University of Utah
A Java graph with changeable coefficients. Draw the graph, zoom in or out, click on any point to get approximate coordinates. Arc length and rise/run calculated.
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 Graphing Vector Calculator  Paul Flavin
An interactive Java applet which, given two vectors, will add or subtract them, producing graphical and numerical solutions almost instantly. The vectors are drawn on a labeled grid, the numerical representations are aligned in matching colors, and a
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