 Algebra (MathPages)  Kevin Brown
More than 50 "informal notes" by Kevin Brown on algebra. Kummer's Objection; irreducibility criteria, multiple linear regression, string algebra, characteristic polynomial of a matrix, iterated means, sums of powers, polynomials from Pascal's Triangle,
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 Compound Interest to e and i  Don Cohen (The Mathman)
Graphing and exploring simple interest and compound interest. Examples of interest earned on one dollar at 6 percent compounded daily, monthly, quarterly, annually. Patterns, infinite sequence. Sample problems with some answers from Chapter 11 of Don
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 EggMath  Bradlow, Sullivan, Levy, UIUC
A collection of modules (including many interactive applets) for K12 classrooms, based on the theme of eggs. Topics include: the shape of an egg (addressing symmetry and crosssection, surfaces of revolution, pin and string construction of ellipses, Cartesian
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 The Euler Number (Geometry and the Imagination)  Conway, Doyle, Gilman, Thurston; The Geometry Center
If we have a polyhedron, we can compute its Euler number, x=VE+F. In fact, we computed Euler numbers ad delectam. Why did we do this? One reason is that they are is easy to compute. But that is not obviously a compelling reason for doing anything in
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 Hunting e  Ivars Peterson (MathTrek)
Lagging far behind in the celebrity sweepstakes is the number known as e. Carried to 20 decimal places, e is 2.71828 18284 59045 23536. Only 50,000,817 of its decimal digits have been computed so far  though there are unconfirmed reports that 1 billion
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 Icon Odds and Ends  Dept. of Computer Science, Univ. of Arizona
Icon is a highlevel, generalpurpose programming language with a large repertoire of features for processing data structures and character strings; an imperative, procedural language with a syntax reminiscent of C and Pascal, but with semantics at a
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 Imaginary Exponents and Euler's Equation  Math Forum, Ask Dr. Math FAQ
What does it mean to have an imaginary exponent? Two different proofs, a consequence, and an application of Euler's Equation.
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 Maps (Geometry and the Imagination)  Conway, Doyle, Gilman, Thurston; The Geometry Center
A map in the plane is a collection of vertices and edges (possibly curved) joining the vertices such that if you cut along the edges the plane falls apart into polygons. These polygons are called the faces. A map on the sphere or any other surface is
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 Mathematical constants and computation  Xavier Gourdon and Pascal Sebah
How famous mathematical constants were computed in the past, and current ways of obtaining them: pi, e, the logarithmic constant, square root of 2, Euler's constant, and Apery's constant. Also algorithms (arbitrary precision computation; FFT based multiplication
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 Mathematical Entertainment  Eric Hiob, British Columbia Institute of Technology
Instructions for building a pinball table that demonstrates Pascal's Triangle. Also, notes on the Travelling Salesman Problem; Finding Areas Using the Monte Carlo Method; Important Numbers (pi and e); the Inside or Outside Problem; and the Roller Coaster
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 Mathematical Tables and Formulas (S.O.S. Mathematics)  Dept. of Mathematical Sciences, Univ. of Texas at El Paso
A place for students and educators to access mathematical formulas. The tables are organized by topics: The First 1000 Prime Numbers; The Prime Factorization of the First 1000 Integers; Math for the Toolbox  SAE to Metric Conversion; Some Important Constants;
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 Mathematics  John Savard
A collection of essays and illustrations: pentagonal tilings, infinity (Cantor's theory of transfinite numbers), rotations of the dodecahedron, Archimedean solids, the fourth dimension (regular polytopes), Gödel's proof and the halting problem, and
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 MathNet  Philip Spencer, Dept. of Mathematics, University of Toronto
Resources for high school students: interactive activities (Classic Fallacies, Keep the Traffic Moving) and mathematically interesting games (Tower of Hanoi, Game of Nim, Monty Hall Problem), questions and discussion, answers and explanation, problems
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 The Maths Igloo  Ian Lynagh
Contents: Pi (generating Pi and where you can get it on the 'net); Four plus five (it's nine, isn't it. Or is it?  binary, hexadecimal); All about logarithms; About the Mathematical symbol "e".
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 Order of Operations  Math Forum, Ask Dr. Math FAQ
What is the correct order of operations? Why use it? What is PEMDAS?
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 Panagiotis Stefanides
Geometry presented at national conferences in Greece. Contents include: Quantization of Circle Duality; Logos Pyr Chronos; 'Buena Fortuna' (artwork); Geometric Mean Ratio (T) by Ruler and Compass; Quadrature Master Theorem; Corollary (Circle Circumference
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 Página Web de Fibonacci, Humor, Matemáticas  José Mari López Goitia
Página personal, con secciones para humor y matemática, información sobre HTML, manual de C, buscadores de todo el mundo, y más.
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 Pi Symphony  Lars Erickson
Lars Erickson composed the Pi Symphony in the early 1990's. The themes and melodies of this 14 minute orchestral piece are directly based on pi's first 32 digits, with countermelodies developed from the number e. Listen to samples of Erickson's musical
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 Plouffe's Inverter: Table of current records for the computation of constants
Classical constants: Pi, 1/Pi, E, Catalan, Zeta(3), Euler's gamma, log(2), Golden Ratio, Square root of 2, N'th binary digit computations, other interesting computations (Bernoulli numbers, Zeros of Riemann's Zeta Function, Madelung Constant, Khintchine
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 A Proof That e is Transcendental  Travis Kidd
A proof by contradiction, adapted from Klein, Famous Problems (New York: Chelsea Publishing Company, 1962).
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 Recognizing Numerical Constants (Organic Mathematics Proceedings)  David H. Bailey, Simon Plouffe
Article and presentation. Abstract: The advent of inexpensive, highperformance computers and new efficient algorithms have made possible the automatic recognition of numerically computed constants. In other words, techniques now exist for determining,
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 Resource Material  Spencer, Chan; Univ. of Toronto Mathematics Network
A collection of resource material for use in classes or extracurricular activities in high schools: answers, explanations, and expositions of some common but deep math questions. In the process of answering three basic questions, this area delves into
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 RJN's More Digits of Irrational Numbers Page  Nemiroff, Bonnell
All digits accessible here were computed by Robert Nemiroff and Jerry Bonnell. The Digit Warehouse: e, sqrts of 2, 3, 5, 6, 7, 8, 10 to millions of digits.
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 Tricks for Learning Math  Math Forum, Teacher2Teacher FAQ
Answers to a frequently asked question: What are some math tricks and mnemonic devices I can use with my students?
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