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  All Sites - 1959 items found, showing 201 to 250

  1. Catalog of Isohedral Tilings by Symmetric Polygonal Tiles - Doris Schattschneider
    A collection of Sketchpad and JavaSketchpad files supplementing the article "One Corona is Enough for the Euclidean Plane" by mathematicians Doris Schattschneider and Nikolai Dolbilin. Tilings of the Euclidean plane by a single polygon are considered, ...more>>

  2. A Catalog of Random Bits - Ivars Peterson (MathLand)
    Researchers use random numbers for tackling a wide range of problems, from modeling molecular behavior and sampling opinion to solving certain equations and testing the efficiency of algorithms. Such numbers also play crucial roles in a wide variety of ...more>>

  3. Categorical Geometry - Zhaohua Luo
    See a brief tour of categorical geometry, which studies the geometric properties of unitary categories. The categorical approach to algebraic geometry was initiated by Yves Diers in his pioneer book Categories of Commutative Algebras (Oxford University ...more>>

  4. Category Theory - Jean-Pierre Marquis
    An entry in the Stanford Encyclopedia of Philosophy covers category theory's definitions, history, and philosophical significance. Also includes a bibliography. ...more>>

  5. Cattle of the Sun - Ivars Peterson (MathTrek)
    The story goes that Archimedes of Syracuse (287-212 B.C.) was annoyed with Apollonius of Perga (262-190 B.C.), who had criticized Archimedes' work on the multiplication of large numbers. For revenge, Archimedes devised a fiendish computational problem ...more>>

  6. Cavities of chaos - Ivars Peterson - Science News Online
    Sorting out quantum chaos in the microwave lab: The rectangle and the (rounded) stadium have long served as geometric playing fields for theorists studying differences between regular and chaotic motion. They can readily calculate sample trajectories ...more>>

  7. CC (Concord Consortium) Library: Papers - Robert F. Tinker
    From Robert F. Tinker, Director of the Educational Technology Lab of the Concord Consortium, a nonprofit, research and development organization dedicated to furthering the technology revolution worldwide through innovations in hardware, software, learning ...more>>

  8. Cédric Villani
    For mathematicians, the 2010 Fields Medalist offers his publications, lecture notes for students, errata sheets, and his research into collisional kinetic theory (Boltzmann type), collisionless kinetic theory (Vlasov type), and optimal transport. "For ...more>>

  9. Cellular Automata Miscellanea - José Manuel Gómez Soto
    Cellular automata theses, reports of summer research, working papers, lectures, and articles, some in Spanish, many by Harold V. McIntosh. Also, download the CAM/PC exerciser CAMEX and a program collection of NXLCAU, the Linear Cellular Automata for NeXTSTEP. ...more>>

  10. Census and Statistics Department, Hong Kong Special Administrative Region - Hong Kong SAR Government Information Centre
    The statistics collection department of the Hong Kong Government. Key geographic, climate, population, and socioeconomic data, press releases, other publications, and an overview of the department. Frequently requested timeseries are available online ...more>>

  11. Census Challenges (Math Chat) - Frank Morgan; Christian Science Monitor
    Gordon Squire notes that planners for the 2000 U.S. Census wonder what to do about missing certain groups of people such as many homeless in New York. Suggestions include statistical random sampling. What approach would you suggest? ...more>>

  12. Census Sampling Confusion - Ivars Peterson - Science News Online
    To obtain a more accurate enumeration in the year 2000, the Census Bureau has proposed integrating the results of conventional counting techniques with the results of a large sample survey of the population, but others want to use the straight count (direct ...more>>

  13. Center for Cognitive Technology - Richard E. Clark, Director
    Conducting and analyzing interdisciplinary research on the role of new technology in the development of advanced expertise and performance motivation. See, in particular, the publications "Teaching general problem-solving skills is not a substitute for, ...more>>

  14. The Center for Game Science
    Makers of free online fraction games such as Treefrog Treasure, Refraction, and Creature Capture. The Center for Game Science also offers its research publications on science, technology, engineering, and math (STEM) games for scientific discovery; for ...more>>

  15. Center for Improving Learning of Fractions - University of Delaware School of Education
    A research and development center aimed at understanding difficulties students have with fractions. Center publications include "Improving At-Risk Learners' Understanding of Fractions," published in the Journal of Educational Psychology; "Developmental ...more>>

  16. Center for Nonlinear Dynamics (CNLD) - University of Texas at Austin
    Research in the Center for Nonlinear Dynamics concerns complex dynamics, chaos, and pattern formation in systems driven far from thermodynamic equilibrium. Experimental, numerical, and theoretical studies have revealed chaotic behavior and complex spatial ...more>>

  17. Center for the Development of Teaching (CDT) - Education Development Center, Inc. (EDC)
    A research and development center whose goal is to learn how teachers' practice can be transformed to support students' construction of knowledge. Currently focusing on mathematics and science teaching, the Center carries out research and action projects ...more>>

  18. Central Office of Statistics, Malta
    The COS collects statistics for the Maltese government. List of publications, tables of key data, and press releases. ...more>>

  19. Central Service for Statistics and Economic Studies (STATEC) - Luxembourg
    The agency for official statistics for the country of Luxembourg. Description of the agency and tables, graphs, and brief articles about key social and economic data available in English and German. More information may be found in the French version ...more>>

  20. Central Statistical Bureau of Latvia - Republic of Latvia
    The statistics collection department of the government of Latvia. Key socioeconomic figures, press releases, list of publications, legal basis and history of the bureau. A version of the site is also available in Latvian. ...more>>

  21. Centre for Innovation in Mathematics Teaching - University of Plymouth
    A focus for research and curriculum development in mathematics teaching and learning with the unifying aim of enhancing mathematical progress in schools and colleges. The site includes: The Mathematics Enhancement Programme; Resources: worksheets in HTML ...more>>

  22. The Challenge of Detracking: Finding the Balance between Excellence and Equity - Lockwood, Cleveland; UEWeb
    Download this PDF for an introduction to and background of tracking; terminology, issues, and data showing prevalence and impact; and bibliography. ...more>>

  23. Chance Encounters at ICME-9 - Cut the Knot!, Alexander Bogomolny
    From the International International Congress on Mathematics Education held in Tokyo in August, 2000, impressions that came from personal, often unplanned, meetings with such mathematicians as N. P. Dolbilin (who outlined the history and the current state ...more>>

  24. CHANCE - J. Laurie Snell, Mathematics Dept., Dartmouth College
    Materials designed to help teach a "Chance" course or a more standard introductory probability or statistics course. A Chance course is a case study quantitative literacy course designed to make students more informed and critical readers of current news ...more>>

  25. Chance of Bank Balance $0.00 (Math Chat) - Frank Morgan, MAA Online
    Answer to the Challenge: My colleague Dick De Veaux reports that upon returning from a three-week trip, he found his checking account balance at exactly $0.00. Without further information, how would you estimate the probability of such an event? ...more>>

  26. Changes of Mathematical State - Ivars Peterson - Science News Online
    A discussion of constraint-satisfaction problems, more specifically the logic puzzle in theoretical computer science known as the satisfiability (SAT) problem (e.g. working out a seating plan), the current state of research on computational "phase transitions," ...more>>

  27. Channeling quantum information efficiently - Ivars Peterson - Science News Online
    By carefully choosing how a message is encoded and decoded, it's possible to approach the theoretical maximum for transmitting information via photons or other quantum particles. ...more>>

  28. Chaos and the Solar System - Paul Trow
    An essay on the historical development of chaos theory, especially as it relates to the solar system. ...more>>

  29. Chaos at Maryland - The Chaos Group, the University of Maryland at College Park
    Research in chaotic dynamics: the theory of dimensions, fractal basin boundaries, chaotic scattering, controlling chaos, and more. Read research papers, link to Daniel P. Lathrop's Nonlinear Dynamics Lab and the Pattern Formation Laboratory, learn about ...more>>

  30. Chaos, Fractals, and Arcadia - Robert L. Devaney; Dept. of Mathematics, Boston University
    An animated description of some of the mathematical ideas lurking in the background of Tom Stoppard's play Arcadia. Introduction; Thomasina's Geometry of Irregular Forms; The Chaos Game; The Sierpinski Hexagon; Thomasina's Fern; Valentine's Grouse; Summary ...more>>

  31. The Chaos Hypertextbook: Mathematics in the Age of the Computer - Glenn Elert
    Formerly titled "Chaos, Fractals, Dimension": an illustrated paper submitted for the author's M.S. in secondary science education from Columbia. Contains chapters on: Mathematical Experiments (Iteration and Orbits, Orbit and Bifurcation Diagrams, Universality); ...more>>

  32. Chaos in the Classroom - Robert L. Devaney; Dept. of Mathematics, Boston University
    One of the most interesting applications of technology in the mathematics classroom is the fact that it allows teachers to bring many new and exciting topics into the curriculum. In particular, technology lets teachers bring some topics of contemporary ...more>>

  33. Chaos vs. Determinism - Harold Brochmann
    Recursive vs. Newtonian Functions - two ways of calculating the value of an investment; The Real World - how do things work in reality? (planetary orbits); The Logistic Function - a study of population growth and extinction. ...more>>

  34. Characteristics of Gifted Children: Articles and Research - Carolyn K., Hoagies' Gifted Education Page
    Articles and reports on characteristics of gifted children: perfectionism, sensitivity, social skills and emotional skills, underachievement, and visual-spatial learning. ...more>>

  35. Charles Babbage Institute of Computer History (CBI) - University of Minnesota
    CBI is a research center at the University of Minnesota dedicated to promoting the study and preservation of the history of information processing. As part of its mission, CBI maintains an archival collection available for use by the public that includes ...more>>

  36. Chasing Arrows (MatheMUSEments!) - Ivars Peterson (Math Muse for Kids)
    The reycling symbol looks like three bent arrows chasing each other around a triangular loop. You often find it printed on cardboard cartons, envelopes, greeting cards, packages, and trash containers. It's also an intriguing mathematical object. Imagine ...more>>

  37. Chinese Mathematics - MacTutor Math History Archives
    Articles on mathematics in Chinese culture: An Overview of Chinese Mathematics; Nine Chapters on the Mathematical Art; The Ten Mathematical Classics; Chinese Numerals; and Chinese Problems. Also an alphabetical list of Chinese mathematicians, linked to ...more>>

  38. Chinese Remainder Theorem - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    An explanation and proof, using modular arithmetic, of the Chinese Remainder Theorem, which concerns problems of the following type: There are certain things whose number is unknown. Repeatedly divided by 3, the remainder is 2; by 5 the remainder is 3; ...more>>

  39. Chinks in Digital Armor - Ivars Peterson - Science News Online
    Tampering with a smart card can force it into making errors in the calculations used for encrypting data, potentially allowing the code to be broken. ...more>>

  40. Chris Fenwick's mathematics education (self-organised reading-to-learn) research and teaching page - Chris Fenwick
    Research material on mathematics education, from the perspective of a teacher of A-level mathematics students. ...more>>

  41. Christianity and the Mathematical Sciences - the Heliocentric Hypothesis - MacTutor Math History Archives
    Linked essay on Christianity's influence on the mathematical sciences. With references and other related web sites. ...more>>

  42. A Chronology of Mathematicians - MacTutor Math History Archives
    A chronology of mathematicians between the dates stated, showing how the lives of the mathematicians overlap: 700 BC-700 AD; 700-1650; 1625-1775; 1750-1850; 1825-1900; 1875-1957. Where either the birth or death of a mathematician is unknown (mostly for ...more>>

  43. A chronology of pi - MacTutor Math History Archives
    Pre-computer calculations of pi, from the Rhind papyrus through Ferguson (1946); computer calculations from Ferguson (1947) through Kanada, Takahashi (Sept 1999). With references and other related web sites. ...more>>

  44. Circles in the Sky - Ivars Peterson; Science News Online
    Detecting the shape of the universe: evidence of a finite, multiply connected universe may show up in microwave data from future spacecraft. ...more>>

  45. Circles of Dissonance - Ivars Peterson (MathTrek)
    Much of today's music rests upon ancient tradition going back thousands of years to the time of the Greek mathematician and mystic Pythagoras. The Pythagoreans observed that tones an octave apart are pleasing to the ear. In modern terms, one can say ...more>>

  46. The Civilization of the Mayans - ThinkQuest 1997
    Essentially a school paper in web format, covering, briefly, Mayan art, astronomy, ball-game, books and hieroglyphics, class system, and number system, with rated related Mayan links and references, and an about-the-authors section. ...more>>

  47. Clash of the Chess Titans - Keith Devlin (Devlin's Angle)
    Thoughts on the Kasparov-Deep Blue match of 3 May 1997. Throughout history, people have been building machines that can perform tasks better than humans. When Kasparov, referring to his upcoming match, talks about "an area that defines human beings," ...more>>

  48. Classical Dynamics: Spinning Eggs A Paradox Resolved - H. K. Moffatt and Y. Shimomura, Nature
    "If a hard-boiled egg is spun sufficiently rapidly on a table with its axis of symmetry horizontal, this axis will rise from the horizontal to the vertical. Conversely, if an oblate spheroid is spun sufficiently rapidly with its axis of symmetry vertical, ...more>>

  49. The Classical & Keynesian AD-AS Model of the Canadian Economy - Elmer G. Wiens; Egwald Web Services Ltd.
    Macroeconomics model of the Canadian economy considering both the aggregate supply and aggregate demand for products. Illustrated article with interactive supplemental page. ...more>>

  50. Climate Dynamics, Chaos and Quantum Mechanics - Dr. A. Mary Selvam
    A theory of everything for chaos, quantum mechanics, and gravity, applicable to macroscale weather patterns and subatomic dynamics as well as turbulent fluid flows. Contents focus on nonlinear dynamics and chaos (fractal geometry), iteration, a cell ...more>>


 
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