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  All Sites - 2029 items found, showing 1351 to 1400

  1. On Four 4s and Speed Limits (Math Chat) - Frank Morgan; Christian Science Monitor
    Can you get past 30 in forming numbers 0, 1, 2, 3, ... from four 4s and the standard mathematical operations +, - , x, /, decimal point, square root, powers, and factorial(!)? ...more>>

  2. Online Innovation Institute (OII) - Ferdi Serim
    The OII provides educators with a learning environment to support integrating the Internet into their individual teaching styles, offering a combination of online and onsite collaborations in which participants develop projects to use in their classrooms. ...more>>

  3. Online journal publication: two views from the electronic trenches - Jonathan Borwein (CECM), Richard Smith (CPROST)
    A report on the experiences of two sets of scholarly publications, the Canadian Mathematical Society and the Canadian Journal of Communication, during their adoption and deployment of new electronic media, drawing on the authors' first-hand experience ...more>>

  4. On Motivation and Understanding - Cut the Knot!, Alexander Bogomolny
    Fourth in a series of columns that draw on Frank Morley's fundamental paper On the Metric Geometry of the Plane n-Line - dealing with what amounts to his proof of the Trisector Theorem. Bogomolny outlines Morley's reasoning first and then supplies necessary ...more>>

  5. On the Bass Note of a Schottky Group [PDF] - Peter G. Doyle
    Using a classical method from physics called Rayleigh's cutting method, Doyle proves the conjecture of Phillips and Sarnak that there is a universal lower bound L2 > 0 for the lowest eigenvalue of the quotient manifold of a classical Schottky group, ...more>>

  6. On the Evolution of Islands - Doyle, Mallows, Orlitsky, Shepp
    On islands and seas: an island is a maximal set of adjacent marked cells in a ring or row; a sea is a maximal set of adjacent unmarked cells. An inductive proof and a counting-argument proof. A paper that appeared in the Israel Journal of Mathematics. ...more>>

  7. On the Horizon (OTH) - School of Education, University of North Carolina (UNC)
    OTH Online: the electronic version of the print publication, with the full text of prior volume years. Also the HORIZON mailing list, seminars and workshops, conferences, and presentations to explore and extend the educational community's thinking about ...more>>

  8. On the Minimax Sphere Eversion - Rob Kusner, Mathematics and GANG, Univ. of Massachussetts at Amherst
    A brief paper describing the evolution of the animation of the minimax sphere eversion. Does not include the animation itself. ...more>>

  9. On the Puzzles with polyhedra and numbers - Jorge Rezende
    Several articles in PDF format, with related links: one on a set of didactic puzzles published by the Portuguese Mathematical Society (SPM); "Jogos com poliedros e permutações", an article in Portuguese describing puzzles with polyhedra ...more>>

  10. On the Teeth of Wheels (Computing Science) - Brian Hayes, American Scientist
    A little history on the importance of gears in the history of computing and the importance of computing in the history of gears. "Designers of gear trains have not merely borrowed ideas from mathematics but have also developed some of those ideas on their ...more>>

  11. Operations Research, Mathematical Programming - Dave Rusin; The Mathematical Atlas
    A short article designed to provide an introduction to operations research, which may be figuratively described as the study of optimal resource allocation. Depending on the options and constraints in the setting, this may involve linear programming, ...more>>

  12. Operator Algebra Resources - N. Christopher Phillips
    Lists of some resources useful to mathematicians working in the subject of operator algebras. General operator algebra sites and publications, information on regular series of conferences, and some important general mathematical resources. ...more>>

  13. Operator Theory - Dave Rusin; The Mathematical Atlas
    A short article designed to provide an introduction to operator theory, which studies transformations between the vector spaces studied in Functional Analysis, such as differential operators or self-adjoint operators. The analysis might study the spectrum ...more>>

  14. Optics2001
    On-line optical library with links to papers, theses, and articles on optics for beginner level to researchers. Contents include: General Optics; Optical Detectors; Optical Fibers; Image Processing; Design Techniques; Optical Elements; Optical Instruments; ...more>>

  15. Optics, Electromagnetic Theory - Dave Rusin; The Mathematical Atlas
    A short article designed to provide an introduction to optics, electromagnetic theory: the study of the propagation and evolution of electromagnetic waves, including topics of interference and diffraction. Besides the usual branches of analysis, this ...more>>

  16. Orbits and Gravitation - MacTutor Math History Archives
    A hypertext essay covering Copernicus through Poincaré, Levi-Civita, and Birkhoff, with References. ...more>>

  17. Order, Lattices, Ordered Algebraic Structures - Dave Rusin; The Mathematical Atlas
    A short article designed to provide an introduction to ordered sets. Ordered sets, or lattices, give a uniform structure to, for example, the set of subfields of a field. Various special types of lattices have particularly nice structure and have applications ...more>>

  18. Ordinary Differential Equations - Dave Rusin; The Mathematical Atlas
    A short article designed to provide an introduction to ordinary differential equations, equations to be solved in which the unknown element is a function rather than a number, and in which the known information relates that function to its derivatives. ...more>>

  19. Ordinary Differential Equations Project - Blanchard, Devaney, Hall; Boston University
    This project included the development of a textbook (publisher Brooks/Cole Publishing Co.) as well as various workshops on teaching differential equations. Instructors manuals and selected articles are available from this site: "Teaching Differential ...more>>

  20. The Organic Mathematics Project - Centre for Experimental and Constructive Mathematics (CECM)
    A collaborative research project involving a number of researchers at the Centre for Experimental and Constructive Mathematics (CECM). Involves in part the development of WWW-based and Maple-assisted tools for document annotation and math activation. ...more>>

  21. Organic Mathematics Workshop: The Proceedings - Borwein, Borwein, Corless, Jörgenson, Sinclair, eds.
    Proceedings of a 1996 workshop held at Simon Fraser University, Vancouver, Canada. Speakers (top experimental and computational mathematicians); their articles, with equations, code, photos, videos, and annotations; and related resources and links. Invited ...more>>

  22. Orthogonal Polynomials, Integral Transforms and Solutions for Dynamics of Multilevel Systems - Vadim Zelenkov; International Sakharov Environmental University
    Papers and preprints by a small group (Savva, Mazurenko, Zelenkov) that studies multiphoton excitation of molecules by infrared laser radiation in an attempt to find analytic solutions of the dynamic equations using miscellaneous orthogonal polynomials ...more>>

  23. Ostrich Llama Count - Examining Solution Methods - Suzanne Alejandre
    Activity, alignments, directions, extensions, and activity sheets that detail five ways to solve the Problem of the Week (PoW) "Ostrich Llama Count." Originally published in the March, 2013, issue of the CMC ComMuniCator, journal of the California Mathematics ...more>>

  24. The Other Crisis in American Education - Singal (Atlantic Monthly)
    A look at potentially high achievers whose SAT scores have fallen, and who "read less, understand less of what they read, and know less han the top students of a generation ago." Includes statements like "schools that had 'severely declining test scores' ...more>>

  25. Overcoming Greatness: The Decline and Recovery of British Mathematics in the Post-Newton Era - Robert Bruen; Harvard University
    An historical essay on Newton and Leibniz, British Progress, European Progress, and the story of the overthrow of Newton's notation at Cambridge. Includes a bibliography. ...more>>

  26. An overview of Babylonian mathematics - MacTutor Math History Archives
    Linked essay exploring the arithmetic and geometry of the Babylonians, who lived in Mesopotamia, a fertile plain between the Tigris and Euphrates rivers. The Babylonian civilization replaced the Sumerian civilisation and the Akkadian civilisation; this ...more>>

  27. An overview of Egyptian mathematics - MacTutor Math History Archives
    Linked essay on the development of the Egyptian number systems, and the arithmetical methods they devised to work with their numerals. With references and other related web sites. ...more>>

  28. An Overview of IMP Years 1 and 2 - Kim Mackey
    An in-depth review of the Interactive Mathematics Program (IMP) by a teacher. Contents include: Introduction: Why be concerned about IMP? Brief Synopsis of Year 1 and Year 2 of the IMP curriculum; A more in-depth look at Year 2 IMP unit "Solve it!"; A ...more>>

  29. An overview of Indian mathematics - MacTutor Math History Archives
    Linked essay on the contributions of Indian mathematics, in particular the number system invented by the Indians, on which much of mathematical development has rested. With references and other related web sites. ...more>>

  30. Overview of the History of Mathematics - MacTutor Math History Archives
    Linked overview from the Babylonians through topics from the twentieth century, with additional sections on notation and communication, brilliant discoveries, how we view history, and a challenge, as well as a 700-item general bibliography. ...more>>

  31. Pacific Institute for the Mathematical Sciences (PIMS)
    A networked institute based in Alberta and British Columbia, Canada. Primarily dedicated to the support and advancement of mathematical science in Western Canada and the Pacific Rim, it maintains physical offices at the Universities of Alberta, British ...more>>

  32. Pairing Like Students for Perseverance in Problem Solving - Marie Hogan
    Article about how one particular duo of eighth grade Pre-Algebra students, paired by ability level, overcame a contentious start to work together and "reach new heights of problem-solving proficiency." Originally published in the March, 2013, issue of ...more>>

  33. Palestinian Central Bureau of Statistics (PCBS) - The Palestinian National Authority
    The agency that collects official statistics for Palestine. Tables of key social, economic and demographic statistics are online; some are available for download, or are linked to methodological information. Site also includes census information, list ...more>>

  34. Palindromic Primes - Ivars Peterson (MathTrek)
    Palindromic primes are whole numbers, evenly divisible only by themselves and 1, that also have the same sequence of digits read forward or backward... The current record for the largest known palindromic prime is held by Harvey Dubner, a retired electrical ...more>>

  35. Panitz cooperative learning and WAC web page and much more - Ted Panitz, Cape Cod Community College
    Workshops, articles, and other resources on cooperative learning and pedagogy. ...more>>

  36. Papers - A. R. D. Mathias
    Downloadable papers in DVI PostScript format: a piece on Bourbaki; a piece on Stalin; a long piece on Mac Lane set theory; a short piece on Zermelo set theory; a recent piece on Strong Statements of Analysis; and three other papers, appdyn97, delays97 ...more>>

  37. Papers by Dr. Bert K. Waits - Dr. Bert K. Waits
    In PDF format, essays include "The Role of Hand-Held Computer Symbolic Algebra in Mathematics Education in the Twenty-First Century: A Call for Action!"; "The Role of Graphing Calculators in Mathematics Reform"; "The Evolution of Instructional Use of ...more>>

  38. Papers - Chaim Goodman-Strauss, Dept. of Mathematics, Univ. of Arkansas
    On Composite Twisted Unknots; Matching Rules and Substitution Tilings; Aperiodic Hierarchical Tilings; Bounding the Results of Arithmetic Operations on Random Variables with Unknown Dependency; A Small Set of Planar Aperiodic Tiles; A Pair of Aperiodic ...more>>

  39. Papers On-line: Advanced Chaos - The Chaos Group, Univ. of Maryland at College Park
    An online collection of published articles and preprints on advanced chaos theory, covering the topics of: Control and Targeting, Dimensions, Fractal Basin Boundaries, General Chaos, Quantum Chaos, Riddled Basins, and Shadowing. ...more>>

  40. Papers on Riemannian Geometry - Alan Weinstein
    Papers written by graduate students in the course Math 240, Riemannian Geometry, in the Spring Semester of 1995 at the Univ. of California at Berkeley. Each paper is either a survey of an area or a tutorial essay in a topic related to riemannian geometry. ...more>>

  41. Paradox (Encarta Encyclopedia 2000) - Microsoft Encarta Online
    Paradox, in logic and mathematics, an apparently contradictory conclusion that is derived from what seem to be valid premises. ...more>>

  42. Parallel Coordinates - Alfred Inselberg
    Download articles, read a course syllabus, and see images about a method for visualizing multi-dimensional spaces with industry applications that have included visual and automatic (classification) data mining, optimization, GIS, process control, decision ...more>>

  43. Partial Differential Equations - Dave Rusin; The Mathematical Atlas
    A short article designed to provide an introduction to partial differential equations. Like ordinary differential equations, partial differential equations are equations to be solved in which the unknown element is a function, but in PDEs the function ...more>>

  44. Party Games - Ivars Peterson (MathTrek)
    You're one of six people at a dinner party. You would undoubtedly find that the dinner party includes either a group of at least three people who all know one another or a group of at least three people who don't know one another. The reason for this ...more>>

  45. Pascal's Fractals - Ivars Peterson (MathLand)
    It's possible to convert Pascal's triangle into eye-catching geometric forms. For example, one can replace the odd coefficients with 1 and even coefficients with 0. Continuing the pattern for many rows reveals an ever-enlarging host of triangles, of varying ...more>>

  46. A Passion for Pi - Ivars Peterson (MathLand)
    Some of you may be familiar with the sentence: How I want a drink, alcoholic of course, after the heavy lectures involving quantum mechanics! The number of letters in each word represents successive digits of pi: 3.14159265358979. How Simon Plouffe memorized ...more>>

  47. Pathways to School Improvement - North Central Regional Educational Laboratory (NCREL)
    A Web site that addresses school improvement issues about students, educators, content, methods, and the environment. Practical, action-oriented summaries of best practice and research, descriptions of schools that have successfully addressed issues, ...more>>

  48. PAT Online: Reports from the Practical Algebra Tutor Project - PACT Center, Carnegie Mellon University
    An intelligent tutoring system, a sort of modified spreadsheet system, based on a theory of cognition developed by John Anderson and the NCTM standards. Try it out online, or: read articles about education, technology, and computer science; explore background ...more>>

  49. Pattern Recognition Student Projects, 1997 - Godfried Toussaint, McGill University
    A variety of student projects: papers presented on the Web, many with Java applets. Topics include: Skeletonization Algorithm of Hilditch; Alpha Shapes; Didier K-Means Algorithm; The MIT Reading Machine for the Blind; Distance Transforms; Midpoint Smoothing; ...more>>

  50. Patterns of physical change - Phil Henshaw
    Focuses on the use of tools such as derivative reconstruction (DR) to measure growth and changes in a system. Includes: a short paper "Is the basis of change evolutionary?"; a description of the theory of derivative reconstruction as a method of analyzing ...more>>


 
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