101. Mathsforkids | A Scientific Web Site For Kids This site has been created to have fun and to practice maths. Includes addition, substraction, multiplication, geometry. http://www.mathsforkids.com/

Welcome in our web site. This site has been create to have fun and to practice maths. Our mission This site is free. Our mission is strictly educationnal and we always appreciate to receive your comments and suggestions by contacting us via our web site. How it works? The subjects appear in the left column. Select your choice and click on the corresponding blue button.

102. Differential Geometry - Dynamical Systems Differential geometry Dynamical Systems. ISSN 1454-511X. Differential geometry is a fully refereed research domain included in all http://vectron.mathem.pub.ro/dgds/

Differential Geometry - Dynamical Systems ISSN 1454-511X Differential Geometry is a fully refereed research domain included in all aspects of mathematics and its applications. The Electronic Journal "Differential Geometry - Dynamical Systems" is published in free electronic format by Balkan Society of Geometers, Geometry Balkan Press. Main Journal Papers Volume 1 (1999) Volume 2 (2000) Volume 3, no. 1 (2001) Volume 3, no. 2 (2001) ... Editors Mathematics Journals Applied Sciences (APPS) The Electronic Library of Mathematics (EMIS) Paper and Electronic Journals Comments welcome Last update: January 2003.

103. AC Commutative Algebra Articles cover commutative rings, modules, ideals, homological algebra, computational aspects, invariant theory, connections to algebraic geometry and combinatorics. http://front.math.ucdavis.edu/math.AC

Wed 26 May 2004 Search Submit Retrieve Subscribe ... iFAQ AC Commutative Algebra Calendar Search Authors: AB CDE FGH IJK ... U-Z New articles (last 12) 25 May math.AC/0405463 A linear bound for Frobenius powers and an inclusion bound for tight closure. Holger Brenner AC AG 20 May math.AC/0405373 The Regularity of Tor and Graded Betti Numbers. David Eisenbud , Craig Huneke , Bernd Ulrich AC AG 19 May math.AC/0405344 Bigraded structures and the depth of blow-up algebras. Juan Elias , Gemma AC 18 May math.AC/0405315 Integral closures of ideals in completions of regular local domains. William Heinzer , Christel Rotthaus , Sylvia Wiegand . 9 pages. AC 18 May math.AC/0405313 Mireille Boutin , Gregor Kemper AC AG 14 May math.AC/0405247 Multigraded regularity: syzygies and fat points. Jessica Sidman , Adam Van Tuyl . 18 pages. AC AG 13 May math.AC/0405214 Asymptotic behaviour of arithmetically Cohen-Macaulay blow-ups. Huy Tai Ha , Ngo Viet Trung . 21 pages. AC AG 13 May math.AC/0405213 On the core of ideals. Craig Huneke , Ngo Viet Trung . 20 pages. AC 13 May math.AC/0405202 The Hilbert-Kunz function in graded dimension two. Holger Brenner AC AG Cross-listings 25 May math.AG/0405464

104. Features Of Cabri Geometry II Software, Cabri geometry™, Cabri geometry™ Product Center Cabri geometry II Plus for Windows® Coming Soon! Learn More . Bring http://education.ti.com/us/product/software/cabri/features/features.html

Advanced Software Learn More > Bring geometry to life with this comprehensive program that’s easy to learn and easy to use. Intuitive features let you build figures using the same principles as manual construction. It’s as simple as drawing with a pencil, protractor and compass, only faster - and more fun. Work in Euclidian, transformational and analytic geometry - it’s all there. Cutting-edge technology lets students alter figures on the screen, allowing them to see patterns, make conjectures and draw their own conclusions. Check out these other great features: Includes Cartesian and polar coordinates Constructs conics, including ellipses and hyperbolas Explores advanced concepts in projective and hyperbolic geometry Customizes menus so that only relevant tools appear Get TI benefits and extras you can count on: Teacher instructions with reproducible activity sheets Professional Development opportunities Single-user, 10-user, student version and network configurations Explore the Cabri Geometry family of products, created and published by the French company Cabrilog: Cabri Geometry App for , TI-92 Plus and TI-89 Take a look at the resources that will help you max out your experience with Cabri Geometry.

105. GrafiCalc - Next Generation Engineering Solver GrafiCalc allows users to simulate and solve a wide range of geometry based computational challenges. http://www.graficalc.com/

Engineering decision-support software Welcome. Here you will find information about GrafiCalc software that helps users to significantly shorten design cycles, reduce costs, while finding the highest quality engineering solutions up-front with unprecedented ease, speed, and accuracy. GrafiCalc allows you to bi-directionally associate geometry, dimensions, and calculations within a single flexible intent-model. Then you can vary design parameters to ask and receive instantaneous engineering decision-support information and answers As much as ninety percent of a product’s final performance and cost is nailed down in the first ten percent of the design cycle. However, it is in the early stages of design when users have to make the most critical design decisions with maximum questions and minimum information, while conflicts are easier to detect and less expensive to fix. GrafiCalc is groundbreaking pre-modeling calculation and analysis software that helps users to conceptualize, analyze, optimize, and solve a wide range of geometry-dependent engineering challenges in less time than any other known method. Already, GrafiCalc has been adopted by thousands of users to engineer better products in less time. We invite your consideration.

106. Algebraic Geometry, Commutative Algebra And Combinatorics -- Erice 2001, NATO Ad Exterior Algebra Methods and Other New Directions. Erice, Sicily, Italy; 9 15 September 2001. http://www.math.sunysb.edu/~sorin/Erice-2001/

Event photos The workshop in Erice will address a wide range of new developments in classical Algebraic Geometry such as curves and their moduli, surfaces, higher dimensional varieties, vector bundles, and toric varieties. A special focus will be on exterior algebra methods which have recently grown in importance in Algebraic Geometry, Commutative Algebra, and Combinatorics, and their computational aspects (Bernstein-Gel'fand-Gel'fand correspondence, Beilinson monad, theory of Chow forms and resultants, algebraic shifting, free resolutions over the exterior algebra, linear syzygies, hyperplane arrangements, ...) Organizing Committee: David Eisenbud Lucian Badescu Sorin Popescu and Alfio Ragusa Speakers (tentative): The following people have responded positively to our invitation: Sponsors: NATO Scientific Affairs Division EAGER: European Algebraic Geometry Research Training Network and the University of Catania , Sicily. Registration: The cost of staying at the Ettore Majorana Centre will be approximately $80 per night (lodging/meals/transfer from/to the airport/1/2 day trip included), and there will be a fee of $100 for the social events. We will be able to offer financial assistance to some of the participants, particularly to younger mathematicians and speakers.

107. Computational Geometry On The WWW Computational geometry on the World Wide Web Starting Point Application Challenges to Computational geometry CG Impact Task Force Report http://www.dcc.unicamp.br/~guialbu/geompages.html

108. Universal Connections - Connecting People To Purpose GeoTran uses sacred geometry and numeric language to correct and heal misinformation in the energy field. http://universalconnections.org/

FREE EVENT Click to Go Here Edmonton, Alberta, Canada Updated: May 6, 2004 Web Site by: Danie Hardie Creative Communications Ltd.

109. The Interactive Geometry Software Cinderella - Redirection Translate this page Please select your language / Bitte wählen Sie Ihre Sprache http://www.cinderella.de/

Please select your language / Bitte wählen Sie Ihre Sprache English Deutsch Bitte wählen Sie Ihre Sprache: Deutsch English

110. ESF - HTTP Error: 404 - Not Found European Science Foundation research network. http://www.esf.org/physical/pn/GeoDis/Geodisa.htm

Search by topics... Programmes Networks EURESCO Conferences Exploratory Workshops EUROCORES Forward Looks Research Infrastructures Programmes Networks EURESCO Conferences Exploratory Workshops ... Research Infrastructures ESF Mailing Lists ESF Discussion Forum 404 Not Found The page you were looking for could not be found. It may have been moved, may no longer exist on our server or may be that you entered the url in capitals letters. Please note that only small letters should be used. If you were presented with this page as a result of following a link on one of our pages, please drop a note to the webmaster Thank you.

111. Straight Objects Lines, Rays And Segments Sine and tangent of an angle, basic trigonometric formulas. Glossary. Test in elementary plane geometry. Brief history of this homepage. http://www.math.psu.edu/geom/koltsova/

112. BIOMETRICS: HAND GEOMETRY Michigan State University http://biometrics.cse.msu.edu/hand_geometry.html

HAND GEOMETRY Home What's New Overview People ... Useful Links By Arun Ross and Anil Jain Hand Geometry: This approach uses the geometric shape of the hand for authenticating a user's identity. Authentication of identity using hand geometry is an interesting problem. Individual hand features are not descriptive enough for identification. However, it is possible to devise a method by combining various individual features to attain robust verification. Hand Geometry vs Fingerprints: Unlike fingerprints, the human hand isn't unique. One can use finger length, thickness, and curvature for the purposes of verification but not for identification. For some kinds of access control like immigration and border control, invasive biometrics (eg., fingerprints) may not be desirable as they infringe on privacy. In such situations it is desirable to have a biometric system that is sufficient for verification. As hand geometry is not distinctive, it is the ideal choice. Furthermore, hand geometry data is easier to collect. With fingerprint collection good frictional skin is required by imaging systems, and with retina-based recognition systems, special lighting is necessary. Additionally, hand geometry can be easily combined with other biometrics, namely fingerprint. One can envision a system where fingerprints are used for (infrequent) identification and hand geometry is used for (frequent) verification. Past Projects: A Hand Geometry-Based Verification System: This project explores the use of hand geometry as a measure of a person's identity. The system consists of an acquisition device that captures the top view and side view of a user's right hand as he places it on the flat surface of the device. A snapshot of the user's hand is taken for processing. A set of features have been identified that could be used to represent a person's hand. These features include the lengths and widths of the fingers at various locations.

113. Geojava Middle School ( geometry). Contents. Angles and Pararell Lines 7 applets. Congruent Figures and Triangles 13 applets. Quadrilaterals http://www.ies.co.jp/math/java/geo/

Middle School ( Geometry) Contents Angles and Pararell Lines 7 applets. Congruent Figures and Triangles 13 applets. Quadrilaterals and Conservation of Area 10 applets. Similar Figures 9 applets. Circles 23 applets. Pythagorean Theorem 19 applets. Miscellaneous 10 applets. Information of Products

114. Katia Consani's Home Page University of Toronto. Arithmetic geometry, number theory, noncommutative geometry. http://www.math.toronto.edu/kc/

Katia Consani Associate Professor Mailing Address Department of Mathematics University of Toronto (SS 4046) 100 St. George Street Toronto, ON M5S-3G3, CANADA How to reach me Office : Sidney Smith Hall 4046 Phone Fax E-mail kc@math.toronto.edu Links UofT Math Department home page Research Research area Arithmetic geometry, Number Theory My curriculum vitae Papers My publications and preprints 2nd Workshop on Non-Commutative Geometry and Number-Theory at MPIM-Bonn: June 14-18, 2004. Organizers: A. Connes, Y. Manin, M. Marcolli, K. Consani. Announcement on the web-page at MPIM-Bonn 1st Workshop on Non-Commutative Geometry and Number-Theory at MPIM-Bonn: August 18-22, 2003. Organizers: Y. Manin, M. Marcolli, K. Consani. Schedule (updated 08/15/03); Photos of the speakers (please don't blame the photographer!) Teaching Winter/Spring terms 2003-04 Calculus! Spring term 2004 Introduction to sheaves and schemes Number Theory/Representation Theory Seminar Spring term 2004 List of speakers and titles Colloquium schedule Schedule for the academic year 2003-04 List of speakers and titles Statements A philosophical scene-assertion from the movie `Young Frankenstein' by Mel Brooks Grothendieck's related web-sites The Grothendieck-circle Grothendieck Biography Project The Bourbakistas

115. Geometry Games geometry Games. Standards and Curriculum. Clicking on a game link will open a new window. Close that window to return to this page. http://www.gamequarium.com/geometry.html

Geometry Games Standards and Curriculum Clicking on a game link will open a new window. Close that window to return to this page. Co-ordinate Game MathsNet Geometry Quiz Pattern Blocks Acute, Obtuse, and Right Angles ... THE GAMEQUARIUM STORY

116. Home Page For Jeff Thunder Northern Illinois University. geometry of numbers. http://www.math.niu.edu/~jthunder/

Jeff Thunder Hi. I'm new at this WWW stuff, so please be gentle! I can be contacted by email, phone or usual mail. jthunder@math.niu.edu Dept. of Math., NIU, DeKalb, IL 60115 Click here to access mathematical papers. I don't have a picture here, but if you are sufficiently perverted, you can find all sorts of them on the naughtier newsgroups. None are of me, I might add. This homepage first erected March 23, 1995 (Revised Oct. 11, 1995) jthunder@math.niu.edu FYEO

117. SpringerLink - Publication Differential Gometry and General RelativityOnline introduction to differential geometry and general relativity. Introduction to Differential geometry and General Relativity. http://link.springer-ny.com/link/service/journals/00454/

Articles Publications Publishers Home Publication Discrete and Computational Geometry Publisher: Springer-Verlag New York, LLC ISSN: 0179-5376 (Paper) 1432-0444 (Online) Subject: Computer Science Mathematics Issues in bold contain article full text that you are entitled to view. Online First Volume 32 Number 1 Volume 31 Number 4 Number 3 Number 2 Number 1 ... Request a sample Volume 30 Number 4 Number 3 Number 2 Number 1 Volume 29 Number 4 Number 3 Number 2 Number 1 Volume 28 Number 4 Number 3 Number 2 Number 1 Volume 27 Number 4 Number 3 Number 2 Number 1 Volume 26 Number 4 Number 3 Number 2 Number 1 Volume 25 Number 4 Number 3 Number 2 Number 1 Volume 24 Number 4 Numbers 2-3 Number 1 Volume 23 Number 4 Number 3 Number 2 Number 1 Volume 22 Number 4 Number 3 Number 2 Number 1 Volume 21 Number 4 Number 3 Number 2 Number 1 Volume 20 Number 4 Number 3 Number 2 Number 1 Volume 19 Number 4 Number 3 Number 2 Number 1 Volume 18 Number 4 Number 3 Number 2 Number 1 Volume 17 Number 4 Number 3 Number 2 Number 1 Volume 16 Number 4 Number 3 Number 2 Number 1 Volume 15 Number 4 Number 3 Number 2 Number 1 Publication 1 of 1 Previous Publication Next Publication Linking Options About This Journal Editorial Board Manuscript Submission ... Vol. 1 (1986) - 14 (1995)

118. Parasolid The geometry engine inside SolidWorks, SolidEdge, DesignWave, IronCAD, Unigraphics and many other products. http://www.ugsolutions.com/products/parasolid/

119. Schwarzschild Geometry More about the Schwarzschild geometry. Back Back to Dive into the Black Hole. Schwarzschild geometry Embedding diagram of the Schwarzschild geometry. http://casa.colorado.edu/~ajsh/schwp.html

More about the Schwarzschild Geometry Back to Dive into the Black Hole Forward to White Holes and Wormholes Andrew Hamilton's Homepage Other Relativity and Black Hole links index movies approach orbit singularity dive ... links Schwarzschild geometry A description of this embedding diagram appears below. Try John Walker's Orbit's in Strongly Curved Spacetime for a Java applet which allows you to play around with orbits in the Schwarzschild geometry. Schwarzschild radius One of the remarkable predictions of Schwarzschild's geometry was that if a mass M were compressed inside a critical radius r s , nowadays called the Schwarzschild radius, then its gravity would become so strong that not even light could escape. The Schwarzschild radius r s of a mass M is given by r s where G is Newton's gravitational constant , and c is the speed of light . For a 30 solar mass object, like the black hole in the fictional star system here, the Schwarzschild radius is about 100 kilometers. Curiously, the Schwarzschild radius had already been derived (with the correct result, but an incorrect theory) by John Michell in 1783 (this reference is from Erk's Relativity Pages ) in the context of Newtonian gravity and the corpuscular theory of light. Michel derived the critical radius by setting the gravitational escape velocity

120. Differential Gometry And General Relativity A course from the Department of Mathematics at Hofstra University on differential geometry and general relativity. http://www.hofstra.edu/~matscw/diff_geom/tc.html

Introduction to Differential Geometry and General Relativity Lecture Notes by Stefan Waner, Department of Mathematics, Hofstra University These notes are dedicated to the memory of Hanno Rund. TABLE OF CONTENTS 1. Preliminaries: Distance, Open Sets, Parametric Surfaces and Smooth Functions 2. Smooth Manifolds and Scalar Fields 3. Tangent Vectors and the Tangent Space 4. Contravariant and Covariant Vector Fields ... Download the latest version of the differential geometry/relativity notes in PDF format References and Suggested Further Reading (Listed in the rough order reflecting the degree to which they were used) Bernard F. Schutz, A First Course in General Relativity (Cambridge University Press, 1986) David Lovelock and Hanno Rund, Tensors, Differential Forms, and Variational Principles (Dover, 1989) Charles E. Weatherburn, An Introduction to Riemannian Geometry and the Tensor Calculus (Cambridge University Press, 1963) Charles W. Misner, Kip S. Thorne and John A. Wheeler, Gravitation (W.H. Freeman, 1973) Keith R. Symon

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