1. The Geometry Center Welcome Page Web site for the (now closed) Center for the Computation and Visualization of Geometric Structures Category Science Math geometry......Note The geometry Center is now closed. Read about the details here. WebEQ Donot miss it! About the geometry Center geometry Center Web Resources http://www.geom.umn.edu/

Note: The Geometry Center is now closed. Read about the details here WebEQ is a suite of Java programs for putting math on the web using MathML. Includes an equation editor, tex translator, and Java APIs. Science comes alive at ScienceU ! Create beautiful symmetries, manipulate 3D solids, explore a virtual Solar System, and much, much more in this brand new site.. Do not miss it! About the Geometry Center Geometry Center Web Resources: Looking for math teaching resources? Check out COMAP! Current Projects what's hot at the Center Interactive Web and Java Applications math you can manipulate Multimedia Documents hypertext papers, preprints, forum Geometry Reference Archive graphic images, formulas Downloadable Software source, binaries, documentation Video Productions descriptions, clips, ordering info Course Materials lab materials, student work MnSCU/UM Distance Learning Initiative resources for new teachers. Search the Geometry Center Web Pages What's New at the Geometry Center (as of 26 March 1998) Overview of the Geometry Center Web Visit our Awards Gallery Geometry Center Events: Workshops Seminars , and Courses Access to Other Web Sites Comments to: webmaster@geom.umn.edu

2. The Geometry Junkyard s of realworld applications for discrete and computational geometry and the questions arising from them. which ideas from discrete and computational geometry (meaning mainly low-dimensional Euclidean geometry) meet some real...... http://www.ics.uci.edu/~eppstein/junkyard

These pages contain usenet clippings, web pointers, lecture notes, research excerpts, papers, abstracts, programs, problems, and other stuff related to discrete and computational geometry. Some of it is quite serious, but I hope much of it is also entertaining. The main criteria for adding something here are that it be geometrical (obviously) and that it not fit into my other geometry page, Geometry in Action , which is more devoted to applications and less to pure math. I also have another page on non-geometrical recreational math Junk sorted into piles All the junk in one big pile New junk ... UC Irvine Semi-automatically filtered from a common source file. Last update: 10 Mar 2003, 18:08:48 PST.

3. A Gallery Of Interactive On-Line Geometry At the geometry Center.Category Science Math geometry......Register Tell Us What You Think Up The geometry Center Home Page Galleryof Interactive geometry HOME The geometry Center Home Page. http://www.geom.umn.edu/apps/gallery.html

Register: Tell Us What You Think Up: The Geometry Center Home Page Gallery of Interactive Geometry: In order to enjoy this exhibit, you will need a Web browser that understands graphical Fill-Out Forms. See our list of browsers for more information. Looking for math teahing resources? Check out COMAP! WebPisces This web-based interface to the Pisces program allows you to compute implicitly defined curves in the plane. You can choose from several pre-defined functions, and can modify their parameters and domains. Build a Rainbow How are rainbows formed? Why do they only occur when the sun is behind the observer? If the sun is low on the horizon, at what angle in the sky should we expect to see a rainbow? This laboratory, developed as part of the University of Minnesota Calculus Initiative , helps to answer these and other questions by examining a mathematical model of light passing through a water droplet. QuasiTiler Generate the famous Penrose tilings, or design your own nonperiodic tilings of the plane. In the process, you can select and visualize plane cross-sections of a lattice in anywhere from 3 up to 13 dimensions! Kali Kali-Jot (with free-hand drawing, for X Mosaic only)

4. Sacred Geometry Home Page Sacred geometry is an ancient art and science which reveals the nature of our relationship to the cosmos. Its study unfolds the principle of oneness underlying all creation in its myriad expression, and leads us inevitably to the perspective of interconnectedness, inseparability and union. http://www.intent.com/sg/

Sacred Geometry Home Page by Bruce Rawles In nature, we find patterns, designs and structures from the most minuscule particles, to expressions of life discernible by human eyes, to the greater cosmos. These inevitably follow geometrical archetypes, which reveal to us the nature of each form and its vibrational resonances. They are also symbolic of the underlying metaphysical principle of the inseparable relationship of the part to the whole. It is this principle of oneness underlying all geometry that permeates the architecture of all form in its myriad diversity. This principle of interconnectedness, inseparability and union provides us with a continuous reminder of our relationship to the whole, a blueprint for the mind to the sacred foundation of all things created. The Sphere (charcoal sketch of a sphere by Nancy Rawles) Starting with what may be the simplest and most perfect of forms, the sphere is an ultimate expression of unity, completeness, and integrity. There is no point of view given greater or lesser importance, and all points on the surface are equally accessible and regarded by the center from which all originate. Atoms, cells, seeds, planets, and globular star systems all echo the spherical paradigm of total inclusion, acceptance, simultaneous potential and fruition, the macrocosm and microcosm. The Circle The circle is a two-dimensional shadow of the sphere which is regarded throughout cultural history as an icon of the ineffable oneness; the indivisible fulfillment of the Universe. All other symbols and geometries reflect various aspects of the profound and consummate perfection of the circle, sphere and other higher dimensional forms of these we might imagine.

5. Geometry In Action This page collects various areas in which ideas from discrete and computational geometry meet some Category Science Math geometry......This page collects various areas in which ideas from discrete and computationalgeometry (meaning mainly lowdimensional Euclidean geometry) meet some real http://www.ics.uci.edu/~eppstein/geom.html

This page collects various areas in which ideas from discrete and computational geometry (meaning mainly low-dimensional Euclidean geometry) meet some real world applications. It contains brief descriptions of those applications and the geometric questions arising from them, as well as pointers to web pages on the applications themselves and on their geometric connections. This is largely organized by application but some major general techniques are also listed as topics. Suggestions for other applications and pointers are welcome. Geometric references and techniques General geometric references Related applications pages Patents in geometric applications Constraint solving ... Delaunay triangulations , and medial axes Design and manufacturing Architecture Assembly planning Computer aided design Computer aided manufacturing ... VLSI design Graphics and visualization Computer graphics Graph drawing Virtual reality Video game programming Information systems Cartography and geographic information systems Data mining and multidimensional analysis Medicine and biology Biochemical modeling Biology Medical imaging Sequence alignment Physical sciences Astronomy Molecular modeling Scientific computation Robotics Computer vision Grasp planning Robot motion planning Other applications Character recognition Compiler design Control theory Signal processing ... UC Irvine Last update: 14 Jan 2001, 09:34:01 PST

6. Computational Geometry Pages Have fun learning geometry by searching for hidden polygons or measuring the Golden Ratio. Includes a glossary. On these pages you will find activities for middle or high school geometry. Bookmark this page and check back often. http://compgeom.cs.uiuc.edu/~jeffe/compgeom

Computational Geometry Pages Welcome to the Computational Geometry Pages, a (hopefully) comprehensive directory of computational geometry resources both on and off the Internet. If there is something you'd like to see here, please send me email. Contributions and suggestions from the community are always welcome! Other essential computational geometry sites include Nina Amenta 's Directory of Computational Geometry Software 's CG Tribune (a newsletter with events and announcements), David Eppstein 's Geometry in Action (describing applications of computational geometry in the Real World), and the 's collection of computational geometry papers new recent current search ] moderated by Joe O'Rourke There are also several excellent Web pages devoted to theoretical computer science in general. See especially Suresh Venkatasubramanian 's Theoretical Computer Science on the Web and the ACM SIGACT home page What's new? (07 Jan 1999) General Resources The Computational Geometry Impact Task Force Report Discussion Related resources Web Directories ... Computer science in general Research and Teaching Research Groups Course Materials Job Announcements Events Past Events Computational geometry Algorithms Geometric application areas ... Other Calendars Literature Bibliographies The Geometry Literature Database Other bibliographies Comprehensive ... Publishers For conference proceedings, see

7. Geometry Center (Science U) The Science U geometry Center contains fun interactive exhibits, informative articles, and helpful lists of facts and formulas in geometry and related areas of mathematics. http://www.scienceu.com/geometry

Welcome to the Geometry Center! Shapes, Patterns, Symmetry! You will find these themes everywhere in the Geometry Center. Browse through an exhibit, or jump right in and start experimenting! Triangle Tilings and Polyhedra Triangle Tiling is the process of taking many copies of a single triangle and laying them next to each other to fill an area. Experiment with the different patterns you can create with flat tiles, or see how you can make polyhedra out of bent triangles with the Symmetry and Tiling Symmetry is everywhere in art, nature and geometry! Learn about periodic and nonperiodic tilings. Watch animations explaining the 17 different kinds of wallpaper symmetry, or use to make your own patterns. Tetrahedral Puzzles Did you know that all convex polyhedra can be decomposed (cut up) into tetrahedra? Tetrahedra are 3-dimensional pyramids with only four faces, the fewest faces possible for any polyhedron. Learn about tetrahedral decompositions by making your own tetrahedra puzzle pieces out of construction paper and put them together to make more complicated polyhedra. Info Center Geometry Center Library Observatory ... Science Me Page last updated Sat Mar 22 21:31:02 CST 2003 Comments to webmaster@ScienceU.com

8. Geometry And Topology A fully refereed international journal dealing with all aspects of geometry and topology and their Category Science Math Topology Journals...... http://www.maths.warwick.ac.uk/gt/

9. Coolmath4kids - Geometry Games, illustrations, and definitions. http://www.coolmath4kids.com/geometrystuff.html

This site is FREE thanks to our generous sponsors: One of my favorites things about geometry is that it's like doing art with math. - These are my two favorite things! Polyhedra Gallery Lessons: Tessellations What Does Congruent Mean? Interior Angles of Regular Polygons home ... safe surfing Thanks for visiting Coolmath4kids! © 1997-2003 Coolmath.com, Inc.

10. E-zgeometry.com For high school teachers and students. Products include an interactive textbook, class video clips, projects, glossary, and resource links. http://www.e-zgeometry.com/

Geometry Projects, Geometry Links, Glencoe Geometry Textbook Notes, Geometry Glossary, High School Geometry Project Ideas, Interactive Geometry Experiences, Geometer's Sketchpad Applets, Geometry Video Footage and much more

11. The Math Forum Home Page Get details about the Center for geometry Analysis Numerics and Graphics, a differential geometry research team at the Univ. of Massachusetts. http://forum.swarthmore.edu/

What's New Math Tools Book List - Brandenburg Growth Creature Lab - Riedy Forum Features Search for Math or browse our Internet Mathematics Library Ask Dr. Math ... in Math Innovations and Concerns About the Forum Join the Forum Awards Text-Only Home Page http://mathforum.org/ webmaster@mathforum.org

12. Math Forum - Geometry Problem Of The Week A weekly interactive project for geometry on the Internet. Challengingproblems are posted and solutions appear on the Web. http://mathforum.org/geopow/

Last Week's Solution Past Problems and Solutions 2002-03 Calendar Become a Mentor ... Print This Problem Regional Ratios - posted March 10, 2003 A regular hexagon and an equilateral triangle have the same perimeter. What's the ratio of their areas? NOTE: Your submission to this problem should include the answer AND a complete explanation of how you found that answer. If you would like to receive a response from us, please use the "Check Answer" feature which will appear after you have submitted your solution. You can read more about how we will "score" your submission on our scoring information page Submit your answer to "Regional Ratios" OR Get help with "Regional Ratios" If you are under 13, you must have permission from your parent or teacher to participate in this web project. You will be asked to provide the email address of your parent or teacher when you register. At any time, parents or teachers may request that we remove personal information by writing to removal@mathforum.org or by contacting us via postal mail or telephone (800-756-7823 x80950). A preview of the following problem is available now: Fix This Picture - to be posted March 24, 2003

13. Books By Jean-Pierre Demailly Book by JeanPierre Demailly in PostScript. http://www-fourier.ujf-grenoble.fr/~demailly/books.html

Books by Jean-Pierre Demailly (last update: November 10, 2000) Complex analytic and algebraic geometry I just got cancelled a stupid agreement I signed long ago with a publisher. This means that my book will soon be available as an "OpenContent Book", i.e. that you can get the source file for free and do whatever you like with it on the web (print it, spread it, modify it, etc...) except claiming that you are the author! At the moment, it is still not completely achieved and the TeX file is not polished enough. Instead, here is a (compressed) PostScript file of the current version: agbook.ps.gz

14. Course Information Lecture notes by Alain Connes. http://www.math.ohio-state.edu/connes/Connes_course.html

Noncommutative Geometry, Trace Formulas and the Zeros of the Riemann Zeta Function Abstract In this course we first give a general introduction to noncommutative geometry. We then discuss a fundamental example of noncommutative space related to the Riemann zeta function. This gives a spectral interpretation of the critical zeros of the Riemann zeta function as an absorption spectrum, while the noncritical zeros appear as resonances, and a geometric interpretation of the explicit formulas of number theory as a trace formula on a noncommutative space. This reduces the Riemann hypothesis to the validity of the trace formula, which remains unproved, and eliminates the parameter of our previous approach. Topics Introduction to noncommutative geometry Quantum chaos and the hypothetical Riemann flow. Algebraic geometry and global fields of nonzero characteristic. Spectral interpretation of critical zeros. The distribution trace formula for flows on manifolds. The action of K on K for a local field. The global case, and the formal trace computation. The trace formula and S -units.

15. Math Forum - Geometry Problem Of The Week A weekly interactive project for geometry on the Internet. Challenging problems are posted and solutions appear on the Web. http://forum.swarthmore.edu/geopow

Last Week's Solution Past Problems and Solutions 2002-03 Calendar Become a Mentor ... Print This Problem Regional Ratios - posted March 10, 2003 A regular hexagon and an equilateral triangle have the same perimeter. What's the ratio of their areas? NOTE: Your submission to this problem should include the answer AND a complete explanation of how you found that answer. If you would like to receive a response from us, please use the "Check Answer" feature which will appear after you have submitted your solution. You can read more about how we will "score" your submission on our scoring information page Submit your answer to "Regional Ratios" OR Get help with "Regional Ratios" If you are under 13, you must have permission from your parent or teacher to participate in this web project. You will be asked to provide the email address of your parent or teacher when you register. At any time, parents or teachers may request that we remove personal information by writing to removal@mathforum.org or by contacting us via postal mail or telephone (800-756-7823 x80950). A preview of the following problem is available now: Fix This Picture - to be posted March 24, 2003

16. Conformal Geometry And Dynamics. An Electronic Journal Of The American Mathemati Contents, abstracts. Full text to subscribersCategory Science Math Publications Journals......ISSN 10884173. Journals Home; Search Journals; For Authors; Subscribe;Tech Support; Help. Most recent volume Previous volume All volumes. http://www.ams.org/ecgd/

ISSN 1088-4173 Journals Home Search Journals For Authors Subscribe ... All volumes About this journal Journal overview Editorial board Copying and reprinting Publishing cycle Subscription information Subscribe from the AMS bookstore Electronic Journals Online Subscription Agreement For authors Initial submission Author packages Permissions Where to send files for accepted papers ... Information for authors on submitting citations Comments: webmaster@ams.org Privacy Statement

17. Non Commutative Geometry Preprints of Alejandro Rivero about Connes's NCG and the Standard Model. Also some historical articles on related topics. http://dftuz.unizar.es/~rivero/research/index.html

Alejandro Rivero - Research Articles Current Work Contact via email if interested on details Brain on Vacation this quarter. Mostly filling research applications. Meanwhile, you could find useful a Collection of REFERENCES Articulos y Preprints The numbers refer to www.arxiv.org , from where you can get .dvi, .ps or .tex versions. If you want to do some comment, or request information, please do not hesitate mail me to rivero@dftuz.unizar.es and : old, unrelated, lattice calculations 9411081 Dirac Delta and Renormalization gzip Tunneling via instantons (last. mod 1994). (note added 27-9-2002: This is, up to this date, the only paper I sent individually to publish. The referee considered it "not urgent", which now I know it is true, see Phys. Rev. D 46, 4685–4690 (1992) . But instead giving this reference-surely unknown to him too-, he argued that the letter was "just calculations" and that he "did not understand formula number (1) in the paper", and so he asked for rewritting. Which I did not) 9605006 gzip (www) Backlinks 9710026 Introduction to the Tangent Groupoid gzip and an unfinished revisit in 2002.

18. The Geometry Junkyard: Origami Resource listing of links for information about the relationship between origami and geometry. http://www.ics.uci.edu/~eppstein/junkyard/origami.html

Origami Krystyna Burczyk's Origami Gallery - regular polyhedra The business card Menger sponge project . Jeannine Mosely wants to build a fractal cube out of 66048 business cards. The MIT Origami Club has already made a smaller version of the same shape. Cranes, planes, and cuckoo clocks . Announcement for a talk on mathematical origami by Robert Lang. Crumpling paper: states of an inextensible sheet Cut-the-knot logo . With a proof of the origami-folklore that this folded-flat overhand knot forms a regular pentagon. Folding geometry . Wheaton college course project on modular origami. Geometric paper folding . David Huffman. Rona Gurkewitz' Modular Origami Polyhedra Systems Page . With many nice images from two modular origami books by Gurkewitz, Simon, and Arnstein. Knotology . How to form regular polyhedra from folded strips of paper? The Margulis Napkin Problem . Jim Propp asked for a proof that the perimeter of a flat origami figure must be at most that of the original starting square. Gregory Sorkin provides a simple example showing that on the contrary, the perimeter can be arbitrarily large. Mathematical origami , Helena Verrill. Includes constructions of a shape with greater perimeter than the original square, tessellations, hyperbolic paraboloids, and more.

19. Journal Of Algebraic Geometry Online Journal of Algebraic geometry. http://www.ams.org/distribution/jag/

Online Recently Posted Articles Most Recent Issue All Issues Search Authors Author Packages Initial Submissions Where to send files for accepted papers Manuscript tracking About Editorial Board The Journal of Algebraic Geometry is devoted to research articles in algebraic geometry, singularity theory, and related subjects such as number theory, commutative algebra, projective geometry, complex geometry, and geometric topology. This journal, published quarterly with articles posted individually before appearing in an issue, is distributed by the American Mathematical Society (AMS). In order to take advantage of some features offered for this journal, users will occasionally be linked to pages on the AMS website. Subscriptions: Subscriptions to this journal can be obtained through the AMS Bookstore . Subscriptions and orders can also be addressed to the American Mathematical Society, P.O. Box 845904, Boston, MA 02284-5904. All orders must be accompanied by payment. A

20. History Of Mathematics - Table Of Contents Topics include background in Babylonian, Euclid, Al'Khwarizmi, pi, and trigonometry. Also has recreations and java chat. http://members.aol.com/bbyars1/contents.html

And Insights into the History of Mathematics Table of Contents Prologue The First Mathematicians The Most Famous Teacher Pi: It Will Blow Your Mind ... Comments and Notices

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

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