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Manifesto: what CTK is about Search CTK Buying a book is a commitment to learning Table of content Things you can find on CTK Chronology of updates Email to Cut The Knot Recommend this page

Chronology of Updates

Note

I have placed chronology of updates for 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 and 2007 into separate files. Starting with 1997, the most recent entries appear topmost. Besides providing an insight into this site's evolution, chronology of updates may be used for word searches.

May 13 Infinity As a Limit
May 12 Projective Generalization of Maxwell's Theorem
May 11 Projective Proof of Maxwell's Theorem
May 10 What Is Infinity?
May 8 3-4-5 Triangle by a Kid
May 7 Bayes' Theorem
May 6 Trigonometric Functions
May 6 What Is Trigonometry?
May 5 The Lepidoptera of the Quadrilateral II
May 5 3D Quadrilateral - a Coffin Problem
May 5 Maxwell Theorem via the Center of Gravity
May 2 Japanese Art and Mathematics
May 1 A Sangaku by a Teen
May 1 Review of Sacred Mathematics: Japanese Temple Geometry
May 1 Peacock's Tail Sangaku
April 30 Circles and Semicircles in Rectangle
April 30 Four Hinged Squares
April 28 Neuberg Sangaku
April 25 What Is Analytic Geometry?
April 25 Guessing Two Consecutive Integers
April 24 A Certain Ambiguity
April 22 Sangaku with Three Mixtilinear Circles
April 16 Continuous Sample Spaces
April 15 Conditional Probability and Independent Events
April 10 Square in Chair
April 9 E. W. Dijkstra's Proof of the Pythagorean Theorem
April 6 Paper Folding & Cutting Sangaku
April 3 Gion Shrine Problem
April 3 A 49th Degree Challenge
April 2 Another simple integral
March 31 Vecten's Mesh
March 29 Touching Circles and Concurrency
March 28 Pappus' Generalization of Euclid I.47
March 23 Isoperimetric Theorem for Rectangles
March 17 Sangaku: Critique of My View and a Response
March 17 Construction of a Triangle from Two Vertices and the Centroid
March 2 Another proof of irrationality of √N
March 2 Boys and Girls Solving Problems
February 25 Huygens' proof of the Pythagorean Theorem
February 21 Three Congruent Circles by Reflection III
February 20 Fermat's Point, Solution #7
February 19 Fermat's Point, Solution #6
February 18 Gergonne in Ellipse
February 17 Seven Circles Theorem
February 13 Expectation
February 10 A Hard but Important Sangaku
February 6 Fundamental Theorem of Algebra - Yet Another Proof
February 2 Concyclic Points in a Triangle
January 29 Two Congruent Circles by Reflection
January 27 Independent Events and Independent Experiments
January 26 Fuss' Theorem
January 26 Intouch Triangle in Poncelet Porism
January 26 Extouch Triangle in Poncelet Porism
January 25 Euler's Formula and Poncelet Porism
January 22 Three Congruent Circles by Reflection II
January 21 Three Congruent Circles by Reflection
January 12 Zeros and Nines
January 8 Random Variables
January 7 Chevalier de Méré's Problem
January 6 Dependent and Independent Events
January 5 Conditional Probability
January 4 Geometric view of the Sieve of Eratosthenes
January 1 Pythagorean Theorem: J. Adams' Proof by Dissection

Copyright © 1996-2008 Alexander Bogomolny

28778549Page copy protected against web site content infringement by Copyscape


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