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  All Sites - 5548 items found, showing 4351 to 4400

  1. Random (Blog) - Neil Bickford
    Bickford writes "about mathematics, cellular automata, programming, Rube Goldberg Machines, and overall randomness." Posts of the self-described "mathematician/programmer/scientist," dating back to May, 2009 -- when Bickford was 11 years old -- have included ...more>>

  2. Randomise Me - Better Data Limited
    This platform for running trials randomizes participants and asks them the questions you choose at pre-specified dates or times. As study subjects report their outcomes, Randomise Me measures the difference between the two groups, and calculates the statistical ...more>>

  3. Randomness and Geometric Probability (The Geometry Junkyard) - David Eppstein, Theory Group, ICS, UC Irvine
    An extensive annotated list of links to material on randomness and geometric probability: Buffon's needle; random domino tilings; random polygons, etc. ...more>>

  4. random.org - Mads Haahr
    Generate random numbers on the Internet by using a web form (comparable to throwing dice), randomized sequences (lottery tickets), raw random bytes, virtual coin flips, or bitmaps. All numbers are tested statistically and the results available in real-time. ...more>>

  5. Random Structures and Algorithms - John Wiley & Sons, Inc.
    A journal that publishes results concerning random graphs, hypergraphs, matroids, trees, mappings, permutations, matrices, sets and orders, as well as stochastic graph processes and networks, with particular emphasis on the use of probabilistic methods ...more>>

  6. Random Walk Along a Line: A Simulation - David Sumner; University of South Carolina
    A Javascript simulation of a particle moving along a straight line with absorbing states at either end. Modifiable variables: length of the line, starting position of the particle, number of trials. The theoretical expected length of a walk with these ...more>>

  7. Random Walk on the Speiser Graph of a Riemann Surface [PDF] - Peter G. Doyle
    A paper that appeared in the Bulletin of the American Mathematical society, which considers the problem of determining the conformal type of a covering surface of the Riemann sphere with punctures. To such a surface there corresponds a Speiser graph of ...more>>

  8. RapidCalculator - ProAlgorithms.com
    This mobile computing platform for web and handheld devices performs matrix operations like multiplication/inverses; plots graphs of functions and operations on polynomials; manipulates complex numbers; and evaluates other math, science, and engineering ...more>>

  9. RapidTables.com
    Rapidtables.com is an online resource for scientific and engineering formulas and tables. Includes tables and lists from Web design, programming, mathematics, electricity & electronics. ...more>>

  10. RA Rings and Algebras (Front for the Mathematics ArXiv) - Univ. of California, Davis
    Rings and Algebras preprints, from the U.C. Davis front end for the xxx.lanl.gov e-Print archive, a major site for mathematics preprints that has incorporated many formerly independent specialist archives. Search by keyword or browse by topic. ...more>>

  11. The Rational Mean - Domingo Gomez Morin
    Blog by a Venezuelan engineer. See, in particular, Morin's arithmonic mean and other original methods for approximating the roots of algebraic equations. ...more>>

  12. Rational Number Tutorial - Joseph L. Zachary
    A tutorial that explores the nature of rational numbers, the significance of the minimum and maximum integers in a rational number system, and the meaning of overflow. Includes a Java applet that opens in a separate window, for use alongside the tutorial. ...more>>

  13. Raw - DensityDesign Lab
    The "missing link between spreadsheets and vector graphics," this open web app's interface lets you create custom vector-based visualizations on top of the Data-Driven Documents JavaScript (D3.js) library. Starting with delimiter-separated values in plain-text ...more>>

  14. The R. Buckminster Fuller FAQ - Christopher J. Fearnley
    The Frequently Asked Questions and Answers (FAQ) Resource on R. Buckminster Fuller, based primarily on the history of the discussions, interests, and needs of the readers of the BITNET mailing list Geodesic and its USENET gateway bit.listserv.geodesic. ...more>>

  15. R. Buckminster Fuller on PBS - Thirteen / WNET
    A biography of R. Buckminster Fuller, with explanations and illustrations of inventions such as the Dymaxion house, Dymaxion car, Dymaxion bathroom, and geodesic dome. Explore Fuller's Dymaxion map, John Kuhtik's Fly's Eye Dome, the World Game, and the ...more>>

  16. R. Buckminster Fuller's Octet Truss - Hop David
    A discussion of Buckminster Fuller's invention based on the octahedron/tetrahedron tessellation. ...more>>

  17. Readings and Poetry Selections for Mathematics in Poetry - JoAnne Growney, Bloomsburg Univ., Bloomsburg, PA; The Math Forum
    Annotated bibliography for the contributed paper session, "The Scholarship of Humanistic Mathematics," AMS-MAA Joint Meetings, Orlando, Florida, 1996. ...more>>

  18. Real Analysis Exchange - Michigan State University Press
    The Real Analysis Exchange journal has four sections: conventional research articles; topical surveys, which give an overview of one area of current research activity; "Inroads," intended for a less traditional presentation of information of interest ...more>>

  19. A Really Friendly Guide to Wavelets - C. Valens
    A tutorial in wavelet transforms and their applications to signal theory and image compression, aimed at engineers. The tutorial may be read online, or downloaded as a PDF or zipped PostScript file. ...more>>

  20. Realtime Fourier synthesis - Sound generation - Erich Neuwirth
    An Excel application that will allow you to synthesize sounds. Mathematically speaking the sliders control the amplitudes of the overtones of the base frequency. Excel workbooks for different versions of Excel to download for Microsoft Windows. Realtime ...more>>

  21. The Real Y2K Problem (Math Chat) - Frank Morgan, MAA Online
    Solution to the challenge: Every year in the millennium from 2000 to 2999 can be represented as the sum of consecutive integers, except one year. Which year cannot be represented as the sum of consecutive integers? New challenge: Where do you think you ...more>>

  22. Recherche dans MATHS France - Académie de Toulouse
    Un moteur de recherche qui scanne tous les sites académiques en mathématiques. ...more>>

  23. Reciprocity Laws - Franz Lemmermeyer
    Reciprocity Laws. From Euler to Eisenstein has just appeared in Springer-Verlag Heidelberg. It is an updated version of Chapters 1 - 11 as they used to be available at this site; the table of contents with ps and pdf files of Chapter 11 (corrected version) ...more>>

  24. Recognizing Numerical Constants (Organic Mathematics Proceedings) - David H. Bailey, Simon Plouffe
    Article and presentation. Abstract: The advent of inexpensive, high-performance computers and new efficient algorithms have made possible the automatic recognition of numerically computed constants. In other words, techniques now exist for determining, ...more>>

  25. Recommended Mathematics Literature - International Mathematics Olympiad (IMO)
    A page of readings recommended by the International Mathematics Olympiad in association with Amazon.com Books. Major sections include: Problem Solving; Collections of Mathematical (Competition) Problems; Anthologies and Surveys; Number Theory; Analysis; ...more>>

  26. The rec.puzzles Archive
    The index of the rec.puzzles archive. Puzzles are categorized by subject area and include solutions compiled from various sources and supposed to be definitive. Subjects include: analysis, arithmetic, combinatorics, competition, decision, geometry, group, ...more>>

  27. The rec.puzzles Archive - Massachusetts Institute of Technology (M.I.T.)
    A list of puzzles, categorized by subject area, from the newsgroup rec.puzzles. Puzzles include solutions compiled from various sources, supposed to be definitive. Subjects include analysis, arithmetic, combinatorics, competition, decision, geometry, ...more>>

  28. rec.puzzles FAQs by Newsgroup - Dept. of Computer Science, Universiteit Utrecht
    Information on the following topics: crosswords, analysis, arithmetic, combinatorics, competition, cryptology, decision, geometry, group, induction, Instructions, language, logic, physics, Pickover (Cliff), probability, real-life, references, series, ...more>>

  29. Recreational Mathematics - David Eppstein, Theory Group, ICS, UC Irvine
    Some Web resources for recreational math, including links to Eppstein's pages own (Number Theory, Combinatorial Game Theory, and The Geometry Junkyard) and to pages by others. ...more>>

  30. Recreational Mathematics - MAA Online
    From the Mathematical Association of America's Basic Library List - a bibliography of articles (in print, not on the Web) on Recreational Mathematics: Games and Puzzles; Puzzle Collections; Contests and Problems; Martin Gardner; Miscellany. ...more>>

  31. Recreational Mathematics Topics - Steven Dutch; University of Wisconsin - Green Bay
    Contents: Symmetry, Crystals, Polyhedra and Tilings: an extensive, illustrated collection including reflectional and rotational symmetry; repeating patterns in two and three dimensions; building crystal forms with unit cells; regular, Archimedean, radial, ...more>>

  32. Rectilinear Geometry (The Geometry Junkyard) - David Eppstein, Theory Group, ICS, UC Irvine
    An extensive annotated list of links to material on geometric problems defined on squares and rectangles, higher dimensional boxes, cubes, and hypercubes, right triangles and other right-angled figures, and "taxicab geometry" in which distances are measured ...more>>

  33. Recursion in Space - 21 Isometric Models - Ernest V. Miliauskas
    Mathematical constructions, sub-assemblies or subsets of an infinite set, presented in a slide show that demonstrates the author's interest in symmetric three-dimensional forms. From chalk talks in advanced spacial studies given at Ryerson University ...more>>

  34. Recursos de Matemáticas para 2º de Bachillerato y 1º de Carrera de Ciencias - Matemáticas de Bachiller
    In Spanish: Libros que puedes hojear; videos que puedes ver introducción al Álgebra de lo Lineal, introducción al Cálculo Diferencial, introducción al Cálculo Integral, ejercicios de examen de Selectividad, Know How; Detector de Pardillos Matemáticos; ...more>>

  35. Recycling Topology - Ivars Peterson (MathLand)
    It's hard to miss the triangle of three bent arrows that signifies recycling. It appears in newspapers and magazines and on bottles, envelopes, cardboard cartons, and other containers. But have you noticed that there are two versions of this ubiquitous ...more>>

  36. Redecorator Fractal Wallpaper Manager - Seraline P/L, Sydney, Australia.
    A wallpaper manager, or randomizer, and image creator for Windows 95/98/NT/2000. Redecorator can change your desktop wallpaper as often as you like, creating seamless tiles and fractals. ...more>>

  37. The REDUCE Computer Algebra System - Anthony C. Hearn
    An interactive program designed for general algebraic computations of interest to mathematicians, scientists and engineers. Capabilities include: expansion and ordering of polynomials and rational functions; substitutions and pattern matching; automatic ...more>>

  38. The REDUCE Computer Algebra System - Anthony C. Hearn; RAND
    An interactive program designed for general algebraic computations of interest to mathematicians, scientists and engineers. Its capabilities include: expansion and ordering of polynomials and rational functions; substitutions and pattern matching in ...more>>

  39. Reference Notes - Department of Mathematics, Cal. State U. San Bernardino (CSUSB)
    Notes on set theory, symbolic logic, methods of proof, basic proofs, functions, relations, binary operations, and groups. Also, Math Tools for practicing modular arithmetic and truth tables, or for solving Diophantine equations. Search the Notes, or scan ...more>>

  40. Reflections on Deep Blue - Keith Devlin (Devlin's Angle)
    We generally assume that the ability to play a good game of chess requires intelligence when it comes to people. Why not for chess-playing machines as well? Well, here is one argument that shows that things are not so simple. One aspect of human intelligence, ...more>>

  41. Reform Calculus Resources - Harel Barzilai
    Many printable activities and worksheets, some with solutions, long-term student projects, capsules and tutorials, and resources for instructors including a sample second-semester calculus course with in-class groupwork activities, projects, and student ...more>>

  42. Regression Applet - R. Webster West, Dept. of Statistics, Univ. of South Carolina
    An applet designed to teach students the effect of leverage points on a regression line. Students may add points to the plot by clicking the mouse button. By adding points far from the existing line, the regression line changes considerably. This is particularly ...more>>

  43. Regression Tools
    Online, Flash-based regression tools for linear, logarithmic, exponential, power, polynomial, multiple linear, multiple polynomial, and nonlinear regression. ...more>>

  44. RegressIt - Robert Nau
    This free Excel add-in macro (xlam) performs multivariate descriptive data analysis, multiple linear regression (with forecasting), and variable transformations. Fitting models with up to 50 variables at one time and up to 32,000 rows of data, RegressIt ...more>>

  45. Regular Graphs - Markus Meringer
    Tables of simple connected k-regular graphs on n vertices and girth at least g with given parameters n,k,g. ...more>>

  46. Rejecta Mathematica
    Open access online journal that publishes only papers that have been rejected from peer-reviewed journals in the mathematical sciences, alongside open letters from the authors. Also available from rejecta.github.io/mathematica/. ...more>>

  47. Relatively Prime - Samuel Hansen
    A series of audio shows "all about the stories behind mathematics," as gathered from interviews with Fields Medalists, composers, "stand-up mathematicians," and others. Listen to hour-long segments "from the mathematical domain" such as "Chinook," about ...more>>

  48. Reliable Expert: Math and Statistics Homework Help
    Homework help service: send your question, with a fee offer and deadline, and if Reliable Expert accepts your offer, you'll get your answer when you need it. ...more>>

  49. Religious schools inspire math reasoning - B. Bower - Science News Online
    Students at ultraorthodox Jewish schools, who study mainly holy texts, outperform most students at mainstream schools on tests of geometric reasoning, perhaps because of the emphasis on reflection and considering different perspectives. ...more>>

  50. The Remarkable Number 1/89 - Robert Miner
    An overview of the Fibonacci series, interesting facts about it, and a sketch of the proof of why the decimal expansion of the fraction 1/89 contains all the Fibonacci numbers expressed as a sequence of decimal fractions, a fact discovered by Cody Birsner. ...more>>

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