 '05 Annual Performance Review: Albert Einstein  Peter Norvig
This parody of human resources formalities imagines how Albert Einstein's supervisor at the Bern Patent Office might evaluate his onthejob performance. "This is a patent office, Albert.... Where does it say that your priorities are rewriting the rules
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 0 to 0 power  Math Forum, Ask Dr. Math FAQ
In calculus, 0^0 is an "indeterminate form"; in some cases we think about it as having one value, and in other cases as having another...
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 $1000 High School Calculus Student Award (Math Chat)  Frank Morgan, MAA Online
Solution to the challenge: Justin Smith calls 5939 a "right" prime because it remains prime after dropping any number of digits from the right: 5939, 593, 59, and 5 are all prime. How many right primes are there less than 1000? Is there a largest right
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 $1000 Math Chat Book Quest (Math Chat)  Frank Morgan, MAA Online
Solution to the challenge: On a beach in Oregon, at a certain moment, the very last bit of the Sun disappears below the horizon. The question is: Can I make that last bit of Sun reappear by jumping up quickly to my full height, or perhaps by very quickly
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 10 Lessons of an MIT Education  GianCarlo Rota
Reflections of the former Norbert Wiener Professor of Applied Mathematics and Philosophy after his years of experience teaching differential equations, probability, and other popular undergraduate courses, as published in the April 1997 Association of
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 125 Questions: What Don't We Know?  Science Magazine
Science celebrated its 125th anniversary with a look forward at the most compelling puzzles and questions facing scientists today. Accompanied by reader's forums and other online extras, this free news feature explores 125 big questions that face scientific
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 12 coins problem  Frans Faase
A classic math puzzle: given a balance scale and 12 coins, one of which is counterfeit and weighs less or more than the other coins, determine the counterfeit in 3 weightings, and tell if it is heavier or lighter. Extensions to other cases and the general
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 The 14 Different Types of Convex Pentagons that Tile the Plane  Ed Pegg, Jr.
Diagrams of the 14 types, sources, and links to related pages on the Web.
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 17Calculus
Concepts, examples, videos, and practice problems to help students better understand the concepts of precalculus, single variable calculus, multivariable calculus, and differential equations. Formerly known as MathZar.
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 1991 Mathematics Subject Classification (MSC)  Chris Eilbeck; HeriotWatt University, Edinburgh
A hypertext version of the 1991 MSC. The main purpose of the classification is to help readers to find the items of present or potential interest to them as readily as possible  in MR, in Zbl, or anywhere else where this classification system is used.
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 1ucasvb's lab  Lucas Vieira
Diagrams and animations from a longtime contributor to Wikipedia's math and physics articles. Posts, which date back to February 2013 and feature graphics coded in POVRay and PHP, include "Experimenting with sound: the polygonal trigonometric functions
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 $200 Double Bubble New Challenge (Math Chat)  Frank Morgan, MAA Online
Challenge: This open problem appears as Conjecture 4.10 in "Component bounds for areaminimizing double bubbles," by Cory Heilmann, Yvonne Lai, Ben Reichardt, and Anita Spielman (NSF "SMALL" undergraduate research Geometry Group report, Williams College,
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 22nd Annual AMATYC Conference (Mathematics Archives)  John St. Clair, Editor
Presentations and contributed papers on mathematics education, improving quantitative literacy, multimedia in the classroom, realworld activities and applications, and more, from the proceedings of the TwentySecond Conference of the American Mathematical
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 A 27Vertex Graph That Is VertexTransitive and EdgeTransitive But Not 1Transitive [PDF]  Peter Doyle
A paper describing a 27vertex graph that is vertextransitive and edgetransitive but not 1transitive. While all vertices and edges of the graph are similar, there are no edgereversing automorphisms. PostScript, source, and PDF picture are available
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 2nd Conference for AfricanAmerican Researchers in the Mathematical Sciences (CAARMS)  Rutgers University  DIMACS Center
The 1996 CAARMS conference: announcement, program, how to order the proceedings.
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 30 Days of Problems for 30 Years of High School Math Competitions  Anne Arundel Community College
Thirty problems and their answers from high school math competitions held at Anne Arundel Community College during the past 30 years.
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 3.1415926...  TWON, INC.
This visualization of the first four million decimal digits of π shows each of the digits 09 as a different colored pixel. Slide the navigator down to see the numeric "snow" representing the digits 500,001 through 4,000,000; search for any number
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 3Blue1Brown  Grant Sanderson
Video explanations that elucidate with computer animations, changes in perspective, humor, and — occasionally — rhyming voiceover: Euler's formula, circle division (disjoint regions obtained by joining n points around a circle), and complex
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 3D and SIRDS images  Jonathan Bowen
An archive of single image random dot stereo (SIRDS) and other 3D images, together with related information and software. It is available via anonymous FTP. Plain text information on frequently asked questions concerning SIRDS, an index and a README
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 3d Etc.  3d Etc, Inc.
OpenGL for XServers  White Pine & Tenon; 3D Explorer and Mechanical Systems (Mathematica plugins).
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 3D Math Explorer  TEBER Engineering & Education Software  Dursun Teber
Graphing software for plotting 2D and 3D data: a computer program that plots 2D and 3D graphs of mathematical functions and curves in unlimited graphing space. Features include 3D curve plotting in real time,
perspective drawing, graph scaling (zooming),
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 3D Modeling, Fabrication and Illustration  Tom Longtin
Mathematically based models and examples of creating accurate patterns for nonconvex polyhedra when material thickness is a concern. Links to illustrations of: Stained Glass Prototypes; VRML; Tensegrity Structures; OcTet Truss Space Frames; Mechanical
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 3D Nauta
A threedimensional spatial, topological problem/game with Web interfaces in Spanish, French, and English. Of two versions of the game, one is accessible
to most people, while the other can be made difficult exponentially. You are invited to order your
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 3D Strange Attractors and Similar Objects  Tim Stilson
A pictorial archive of "fsh" and polynomial strange attractors, chaosgame objects, and quaternion Julia sets, with links to books about chaos and strange attractors.
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 3DXplorMath  Richard Palais
3DXplorMath creates visualizations of mathematical objects and processes. This tool has builtin algorithms for displaying mathematical objects such as plane curves, space curves, surfaces, conformal maps, polyhedra, ordinary and partial differential
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 3rd Conference for AfricanAmerican Researchers in the Mathematical Sciences (CAARMS)  Morgan State University, Baltimore, MD
The 1997 CAARMS conference: announcement, schedule, poster sessions.
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 The 3x+1 problem and its generalizations (Organic Mathematics Proceedings)  Jeff Lagarias
The 3x+1 problem, also known as the Collatz problem, the Syracuse problem, Kakutani's problem, Hasse's algorithm, and Ulam's problem, concerns the behavior of the iterates of the function which takes odd integers n to 3n+1 and even integers n to n/2.
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 4D Toys  Marc ten Bosch
Fourdimensional game for exploring how tesseracts and other 4D objects bounce, slide, and roll around.
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 4th Annual Conference for AfricanAmerican Researchers in the Mathematical Sciences (CAARMS)  Rice University, Houston, TX
The 1998 CAARMS conference: schedule, conference attendees contact information. See also http://cm.belllabs.com/who/will/caarms4.html.
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 The 4th Spatial Dimension
An introduction to the visualization of 4 dimensional space. Numerous resources.
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 50 States' Certification Requirements  College of Education, University of Kentucky
Links to teacher certification requirements for all 50 states, as well as a K12 job opportunities database.
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 5˝ Examples in Quantum Mechanics  Tom Kirkman
An informal textbook, introducing quantum mechanics with a grounding in classical mechanics. It tries to formulate problems in ways that allow easy translation into Mathematica code. Sets of problems at the end of each "chapter" provide extentions of
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 5 Numbers  Simon Singh and Marcus du Sautoy, BBC Radio 4
Web pages and Real Audio Music downloads of fifteen minutelong radio broadcasts that take a "quirky look" at zero, pi, the golden ratio, i, and infinity. "Hear about the stark reality behind the imaginary number, try a slice of pi, find out about the
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 6+1 Trait Writing (NWREL)  Northwest Regional Educational Laboratory
A scoring guide (rubric) not specifically for mathematical writing, but useful nonetheless. Subjects included: ideas and content, organization, voice, word choice, sentence fluency, and conventions. Also links to other Northwest Regional Educational Laboratory
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 82 Games  Roland Beech
Indepth statistical coverage and analysis of the National Basketball Association (NBA). The site analyzes teamwide or playerspecific shot selection and shot clock usage, production by position, player pairings, foul drawing, turnovers, and clutch play
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 8 Foxes
A blog in which geometry questions of different levels are posted daily.
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 8th International Congress on Mathematics Education (ICME)
ICME 8, July 1421, 1996 in Seville, Spain. The Math Forum hosted the Web component of Topic Group 19  ComputerBased Learning Environments. Complete abstracts and list of contributors; Online electronic poster sessions. Part of a larger series of firsthand
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 A1 All Subjects AtHome Tutoring ServiceŽ  Raymond La Barbera
Specializes in private, onetoone, athome instruction in all subjects, grades, levels, and tests. Instructions on hiring a tutor; links to tutorials; advice for working with A1 All Subjects, and for starting your own tutoring business.
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 AAMT: Australian Association of Mathematics Teachers
A federation of affiliated associations representing all States and Territories within the Commonwealth of Australia, AAMT acts as a national network and council of mathematics educators. AAMT provides serial publications and a regular newsletter, resources
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 AbakBot
Online calculators for determining an arbitrary number of the Fibonacci sequence; solving Diophantine equations; calculating the roots of a cubic complex equation; finding the area of intersection of the circles on the plane; calculating the shortest
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 Abakus  Lothar H. Hofmann
Download a free Windows Japanese sorobanabacus. (Site is in Swedish.)
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 Abbott and Costello's Wacky Math  Ivars Peterson (MathTrek)
The Math in the Movies Web page provides an annotated list of films in which mathematics plays some sort of role. The choices range from the calculus lessons of Stand and Deliver to the mystifying numerology of the 1998 thriller Pi. Among the notable
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 The ABC Conjecture Home Page  Abderrahmane Nitaj
A statement of the abc conjecture, first formulated by Joseph Oesterlé and David Masser in 1985, with generalizations, consequences, tables, and a bibliography. Also abc theses, and relevant links.
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 Abelian Groups (Catalogue of Algebraic Systems)  John Pedersen, W. Edwin Clark; Dept. of Mathematics, University of South Florida
Definition, examples, structure, decision problems, spectra and growth, and references about Abelian Groups.
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 The Abel Prize  The Norwegian Academy of Science and Letters
The Abel Prize recognizes outstanding scientific work in the field of mathematics. Read about past honorees and the prize's namesake  the first to prove the general binomial theorem  including a scientific biography on the works of Niels Henrik Abel,
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 About a Line and a Triangle  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
An interactive page illustrating how the relation between the vertices and the sides of a triangle can be investigated by rotating the triangle.
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 About e  Math Forum, Ask Dr. Math FAQ
What is e? Who first used e? How do you find it? How many digits does it have? e = 2.71828... and is the base of natural logarithms.
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 About Temperature Sensors
A Web guide to contact (thermometers, etc.) and noncontact (thermal imagers, etc.) temperature sensors and their uses in temperature measurement. Includes vendors, displays, applications, meetings, and more.
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 About time  Keith Devlin (Devlin's Angle)
An essay on time in mathematics and engineering (the time that we measure and use to regulate our lives). How did we come to measure time in the first place? What exactly is it that our timepieces measure? And what scientific principles do we use to construct
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 The Absentminded Artist's Fractal Art Parade  Douglas R. Cootey
Fractal images treated as a photographer would treat a landscape, incorporating design and color composition into each piece. Images were made with Fractal eXtreme, Ultra Fractal, FractalPro, Lyapunovia, and Mand2000.
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