 Graphs: Theory  Algorithms  Complexity  Thomas EmdenWeinert
Links to information about graphs and graph theory. Contents include: Related Link Collections; Online Forums; Open Problems; Topics; Search & Find (look for people, bibliographic data, journals, conferences); Software; Books & Lecture Notes;
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 Graph Theory Glossary  Chris Caldwell; Dept. of Mathematics & Computer Science, Univ. of Tennessee at Martin
A glossary that supplements Caldwell's Interactive Tutorials in Graph Theory written using the Web Tutor. Terms introduced in the tutorials are introduced; you may need to consult a library to find the definitions of more advanced terms.
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 Graph Theory Tutorials  Chris K. Caldwell
A series of short interactive tutorials introducing the basic concepts of graph theory, designed with the needs of future high school teachers in mind and currently being used in math courses at the University of Tennessee at Martin. An Introduction to
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 Greek Astronomy  MacTutor Math History Archives
Linked essay tracing the history of Greek astronomy from its beginnings with
Thales, in philosophy and timekeeping, through Pythagoras, Eratosthenes,
Hipparchus, Ptolemy, Plato, Aristotle, Aristarchus, and many others; with
references to relevant
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 Greek number systems  MacTutor Math History Archives
Linked essay on the history of the Greek number systems, notably the acrophonic system used in the first millennium BC, and the alphabetical numerals. With references and other related web sites.
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 Grothendieck Circle  Leila Schneps et al.
Alexandre Grothendieck's published articles, unpublished research, letters, and translations: The Cohomology Theory of Abstract Algebraic Varieties, Standard Conjectures on Algebraic Cycles, Hodge's General Conjecture Is False for Trivial Reasons, Groupes
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 Groupoid Home Page  Ramsay, Chiaramonte, Woo, Renault, Ramazan; Institute of Mathematics of the Romanian Academy
Papers on groupoids; other sources on groupoids; bibliography; an address book of mathematicians interested in groupoids; and future conferences.
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 Handson Math: Activities for the Elementary Classroom  Janine Parker
Lesson plans for children in grades one through six about topology, number patterns, and geometry. Handouts for each lesson may be downloaded in PostScript form or as GIF files, and a zipped DOS program to display Platonic solids, Archimedean solids,
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 Harmonic Maps Bibliography  Burstall, Lemaire, Rawnsley
An ongoing project to provide a searchable, comprehensive, and uptodate bibliography in the area of harmonic maps. The bibliography is in TiB format (a bibliographical preprocessor for TeX, LaTeX etc.) from which BiBTeX, TeX and PostScript versions
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 Harmonic Maps Bibliography  Department of Mathematics, University of Florida
The Tib formatted bibliography on harmonic mappings between Riemannian manifolds maintained and offered for anonymous ftp at ftp.maths.bath.ac.uk and at ftp.maths.warwick.ac.uk in England. Formats other than Tib are also available.
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 Harmonious Colourings and Achromatic Number  Keith Edwards; Department of Applied Computing, University of Dundee
A vertex colouring of a graph is an assignment of a colours to the vertices, with the requirement that adjacent vertices receive distinct colours. A harmonious colouring is a vertex colouring with the added requirement that each pair of colours appears
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 Harry Bohan's Web Site
Site contains personal info (education, jobs, list of publications), hyperstudio stacks of K8 math programs (some available for download here, all available by sending the required number of HD disks to Harry Bohan), an extensive page on teaching multiplication,
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 Hilbert's Tenth Problem  Russian Academy of Sciences
A page to promote research connected with the negative solution of Hilbert's Tenth Problem and developed techniques, which have applications in the theory of algorithms, algebra, number theory, model theory, proof theory and in theoretical computer science.
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 HipEstat: Hipertexto de Estadística  Juan y Ignacio Lejarza; Universidad de Valencia, España
A Spanish language tutorial in statistics. Contents include descriptive analysis, probability, inference, and an introduction to multivariate analysis, with text, software, bibliography, and related links.
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 Histoire des maths et des mathématiciens  Franck Duffaud
Duffaud, enseignant dans le 93, a dédié son site à l'histoire des maths.
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 Historical Mathematics Monographs  Cornell University Library
More than 550 books in English, French, German, and Italian, scanned from originals held by the Cornell University Library. The Collection is indexed, can be browsed by author and title, and is freely available online to the public.
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 The history of cartography
 MacTutor Math History Archives
Linked essay on how map making has played an important role in the development of mathematics.
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 History of Mathematics  David Joyce; Dept. of Mathematics & Computer Science, Clark University
History sources, books and articles online. Sources by region (Babylonia, Egypt, China, Greece, India, Arab sphere, Japan, and Europe); Books and other nonweb resources (organizations, bibliography of source books, journals, bibliographies and catalogues,
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 History of Mathematics  David R. Wilkins, Trinity College, Dublin
A directory of Web sites and pages around the world relating to the history of mathematics. Also biographies of some seventeenth and eighteenth century mathematicians, taken from A short account of the history of mathematics (4th edition, 1908) by W.
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 A history of the Burnside problem  MacTutor Math History Archives
Linked essay on the development of the questions: Is a finitely generated periodic group necessarily finite? Is a finitely generated periodic group of bounded exponent necessarily finite?
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 A history of time: 20th century time
 MacTutor Math History Archives
Linked essay on the dramatic changes in ideas about time in the 20th century.
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 A history of time: Classical time
 MacTutor Math History Archives
Linked essay on the central role time has played in mathematics from its very beginnings.
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 The history of voting
 MacTutor Math History Archives
Linked essay on the history of electoral systems.
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 A history of Zero  MacTutor Math History Archives
Linked essay on the development of the concept of zero. There are two important but different uses of zero: one as a empty place indicator in our placevalue number system, and one as a number itself in the form we use it as 0. There are also different
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 Homepage of Torsten Sillke  Torsten Sillke
A collection of puzzles statements, with references, on a variety of topics: operations research, such as crossing the bridge; logic, including liars and truth tellers, mastermind, and age problems; lateral thinking, also known as "situation puzzles";
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 Honest Open Logical Debate (HOLD)
Debate on math reform  an organization of people in the Palo Alto (California) community who feel that some of the changes being made in the name of educational reform are being implemented too rapidly, and without community input. With an extensive
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 Horology: The Index  Fortunat MuellerMaerki
Internet resources on clocks and time: directories, dictionaries, glossaries, etc.; organizations, information sources (horological homepages; email addresses for cyber horologists; other electronic media: newsgroups, directories, ezines, mail lists,
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 How do we know about Greek mathematicians?  MacTutor Math History Archives
Linked essay examining how the dates of Diocles given in the MacTutor archive have been determined, and other ways to gain information about the ancient Greek mathematicians, with references and other related web sites.
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 How do we know about Greek mathematics?  MacTutor Math History Archives
Linked essay illustrating the way that Greek mathematical texts have come down to us by looking first at perhaps the most famous example, Euclid's Elements, and Archimedes' palimpsest, with references and other related web sites.
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 Hypatia  Taylor, Dawson; Dept, of Computer Science, Queen Mary & Westfield College, East End, London, UK
Hypatia is a searchable directory of research workers in Computer Science and Pure Mathematics, and a library of their papers. Contents: New papers, people, places and papers, bibliographies, useful links, Hypatia of Alexandria. Authors can be found by
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 Hyperspace Structures: Exploring the Fourth Dimension  Burbanks, Beardmore
Mpeg Movies and pictures illustrate: 1. The Hypercube: a 4 dimensional analogue of the cube. Details of its construction, along with movies of a spinning hypercube. 2. An "Inflated Hypercube": approximating the hypersphere. 3. Hypertorus: Adding together
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 Incorporating Word Problems into Basic Skills Development  Gerald A. Baldino; YaleNew Haven Teachers Institute
Teaching word problems and methods of solution: a unit concerned with practical approaches to problem solving at the elementary mathematical level. It presents concepts and ideas calculated to encourage educators to concentrate on and deal with everyday
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 Indian numerals  MacTutor Math History Archives
Linked essay on the method of expressing every possible number using a set of ten symbols (each symbol having a place value and an absolute value), which emerged in India. With references and other related web sites.
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 The Indian Sulbasutras  MacTutor Math History Archives
Linked essay on the Sulbasutras, appendices to the Vedas that contain all that is known of Vedic mathematics, and give rules for constructing altars. (The Vedic people entered India about 1500 BC from the region that today is Iran. The word Vedic describes
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 Infinity  MacTutor Math History Archives
Linked essay on the mathematical, philosophical, and religious aspects of infinity. With references and other related web sites.
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 Institute for the Study of Adult Literacy (ISAL)  Penn State University, College of Education
ISAL stresses the importance of connecting research to improving practice. Resources include software, publications, consulting services, and Web links.
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 Interactive Course on Projective Geometry  Juan Carlos Alvarez Paiva; Polytechnic University, Brooklyn, NY
An interactive, discoverybased course on projective geometry. Lecture notes, sample exams, applets, and a list of recommended reading are provided.
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 Interior Point Methods Online  Argonne National Laboratory
Join, contribute to, and search the archive of the interiorpointmethods@mcs.anl.gov mailing list; visit the archive of papers announced through the mailing list or the bibliography of interior point methods for mathematical programming; browse through
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 Interval Computations
What is Interval Arithmetic?; Languages for Interval Analysis; Numerical Toolbox for Verified Computing (information on the book and software; in German and English): Pascal and C++ versions; Interval Software; Roundings Necessary for Interval Computations;
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 Introduction to Lacunarity  Erik Rauch
Lacunarity is a counterpart to the fractal dimension, and describes the degree of gappiness of a fractal. It is strongly related to the size distribution
of the holes on the fractal and to its deviation from translational invariance; roughly speaking,
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 An Introduction to Wavelets  Amara Graps; Institute of Electrical and Electronics Engineers, Inc.
A paper giving an overview of wavelets: mathematical functions that cut up data into different frequency components, and then study each component with a resolution matched to its scale. Wavelets have advantages over traditional Fourier methods in analyzing
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 Iterated Prisoners' Dilemma  Delayaye, Mathieu, Beaufils
A comprehensive source of information on the Iterated Prisoner's Dilemma, and on the representation, study of, and knowledge about cooperation (and evolution of cooperation) between agents. Strategies, references (papers in English and French, bibliography),
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 Jaina mathematics  MacTutor Math History Archives
Linked essay on the period after the founding of Jainism up to around the time of Aryabhata in around 500 A.D., until recently thought to be a time of little mathematical activity in India. (Jainism is a religion and philosophy which was founded in India
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 Jeffrey C. Lagarias
A member of the University of Michigan Department of Mathematics. List of publications, with many available for download in PostScript format; Lagarias' research interests include Number Theory, also Computational Complexity Theory, Cryptography, Discrete
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 Joseph Malkevitch's Home Page  Joseph Malkevitch, York College (CUNYThe City University of New York)
Malkevitch's interests include geometry (polytopes, graph theory, tilings, etc.), discrete mathematics, and mathematical modeling (especially models dealing with fairness and equity issues and codes of all kinds). Most of his research concerns using combinatorial
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 JSTOR: Journal Storage
An effort to ease the increasing problems faced by libraries seeking to provide adequate stack space for the long runs of backfiles of scholarly journals, helping the scholarly community take advantage of advances in information technologies. The database
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 Ka's Geometriepage & MatheGalerie: Grundschulmathematik  Monika Schwarze
Eine Seite zur Grundschulmathematik mit SoftwareTipps. Links zu Mathematikunterrichtseinheiten für Grundschulkinder der Klassen 1 bis Klasse 4; Freiarbeitsmaterialien und kleinen Unterrichtsprojekten. A German Web site for teachers and lovers of geometry,
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 Ken Shirriff
A researcher at Sun Microsystems. Annotated bibliographies on fractals and cryptography, and related papers, which may be downloaded in PostScript format. Graphics of Voronoi fractals (dividing the plane into regions closest to a given point) and fractals
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 Kinds of Constructivism: An Annotated Bibliography  Annie & John Selden; The Math Forum
A bibliography prepared by Annie and John Selden as a supplement to "Constructivism in Mathematics Education  What Does It Mean?"  a talk they gave at the 1996 Joint Mathematics Meetings in Orlando, Florida.
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 The King of Infinite Space: Donald Coxeter, The Man Who Saved Geometry  Siobhan Roberts
As a companion to The King of Infinite Space, a biography of Donald Coxeter, this website provides photographs, archives, papers, video footage, links and other resources, allowing readers to further explore Donald Coxeter’s infinite passion for geometry.
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