All sites of Mathematics

Pentominoes Pentominoes
Pentominoes- Expository paper by R. Bhat and A. Fletcher. Covers pre-Golomb discoveries. the triplication problem and other aspects. ...
Rectifiable Polyomino Rectifiable Polyomino
Rectifiable Polyomino- Karl Dahlke explains and demonstrates tiling. Includes C-program source. ...
Packing Shapes Packing Shapes
Packing Shapes- Erich Friedman's Introduction to a variety of packing and tiling problems. ...
Harold McIntosh's Flexagon Papers Harold McIntosh's Flexagon Papers
Harold McIntosh's Flexagon Papers- Including copies of the original 1962 Conrad-Hartline papers. Abstract, html-pages, or .pdf documents. ...
Flexagons Flexagons
Flexagons- Conrad and Hartline's 1962 article on Flexagons. ...
Gerard's Pentomino Page Gerard's Pentomino Page
Gerard's Pentomino Page- Illustrates the 12 shapes. symmetrical combinations. ...
Golygons by Mathworld Golygons by Mathworld
Golygons by Mathworld- What they are, and how to find them. ...
Polyform and Dissection Puzzle Links Polyform and Dissection Puzzle Links
Polyform and Dissection Puzzle Links- Christian Eggermont's link page. ...
Polyforms Polyforms
Polyforms- Ed Pegg Jr.'s site has pages on tiling, packing, and related problems involving polyominos, polyiamonds, polyspheres, and related shapes. ...
Polyiamond Exclusion Polyiamond Exclusion
Polyiamond Exclusion- Colonel Sicherman asks what fraction of the triangles need to be removed from a regular triangular tiling of the plane, in order to make sure that the remaining triangles contain no copy of a given ...
Unbeatable Tetris Unbeatable Tetris
Unbeatable Tetris- Java applet demonstres that this tetromino-packing game is a forced win for the side dealing the tetrominoes. Complete with mathematical proof. [Java] ...
Unbalanced Anisohedral Tiling Unbalanced Anisohedral Tiling
Unbalanced Anisohedral Tiling- Joseph Myers and John Berglund found a polyhex that must be placed in two different ways in a tiling of a plane, such that one placement occurs twice as often as the other. ...
Anna's Pentomino Page Anna's Pentomino Page
Anna's Pentomino Page- Anna Gardberg makes pentominoes out of sculpey and agate. ...
Hop's Escher Tessellation Tiles Hop's Escher Tessellation Tiles
Hop's Escher Tessellation Tiles- Escher-like tessellations. ...
Lego Pentominos Lego Pentominos
Lego Pentominos- Eric Harshbarger. This puzzle maker says that the hard part was finding legos in enough different colors. ...
Maximum Convex Hulls of Connected Systems of Segments and of Polyominoes Maximum Convex Hulls of Connected Systems of Segments and of Polyominoes
Maximum Convex Hulls of Connected Systems of Segments and of Polyominoes- Bezdek, Brass, and Harborth. Abstract to an article which places bounds on the convex area needed to contain a polyomino. (Contributions to Algebr ...
Mathforum : Minimal Domino Tiling Mathforum : Minimal Domino Tiling
Mathforum : Minimal Domino Tiling- Tiling a square without cutting it into two.(Problem of the week 826, Spring 1997) ...
Animal Enumerations Animal Enumerations
Animal Enumerations- Enumeration on regular tilings of the Euclidean and Hyperbolic planes. ...
The Three Dimensional Polyominoes of Minimal Area The Three Dimensional Polyominoes of Minimal Area
The Three Dimensional Polyominoes of Minimal Area- L. Alonso and R. Cert's abstract of a paper published in vol. 3 of the Elect. J. Combinatorics. Full paper available in different formats (.pdf, postscript, tex etc). ...
Mathforum : Tiling Rectangles from Ell Mathforum : Tiling Rectangles from Ell
Mathforum : Tiling Rectangles from Ell- Stan Wagon asks which rectangles can be tiled with an ell-tromino. ...
Pentomino Applet Pentomino Applet
Pentomino Applet- Rujith de Silva's applet puzzle offers games of four different sized rectangles. Source code available. [Java] ...
Dancing Links Dancing Links
Dancing Links- Don Knuth discusses implementation details of polyomino search algorithms (compressed PostScript format). ...
Polyomino Enumeration Polyomino Enumeration
Polyomino Enumeration- K. S. Brown examines the number of polyominoes up to order 12 for various cases involving rotation or reflections. Equations linking the cases are proposed. ...
Mathforum : a Pentomino Problem Mathforum : a Pentomino Problem
Mathforum : a Pentomino Problem- Geometry Forum: Lists the pentominoes; fold them to form a cube; play a pentomino game. (project of the month, 1995) ...
Polypolygon Tilings Polypolygon Tilings
Polypolygon Tilings- S. Dutch discusses polyominoes, poliamonds, and polypolygons with special attention to tiling characteristics. ...
The Poly Pages The Poly Pages
The Poly Pages- About various polyforms - polyominoes, polyiamonds, polycubes, and polyhexes. ...
Pentomino HungarIQa Pentomino HungarIQa
Pentomino HungarIQa- Kati presents a pentomino puzzle using poly-rhombs instead of poly-squares. [English/French/German/Hungarian] ...
Stewy's Site Stewy's Site
Stewy's Site- The infinitesimal is the opposite of infinity, and mathematicians still argue over its existence. This page probes into one of the weirdest numbers in mathematics. ...
Pairwise Touching Hypercubes Pairwise Touching Hypercubes
Pairwise Touching Hypercubes- Erich Friedman's problem of the month asks how to partition the unit cubes of an a*b*c-unit rectangular box into as many connected polycubes as possible with a shared face between every pair ...
Miroslav Vicher's Puzzles Pages Miroslav Vicher's Puzzles Pages
Miroslav Vicher's Puzzles Pages- Polyforms (polyominoes, and polyiamonds) graphics, tables and resources (English/Czech). ...
The Pentomino Dictionary by Gilles Esposito-Farèse The Pentomino Dictionary by Gilles Esposito-Farèse
The Pentomino Dictionary by Gilles Esposito-Farèse- English words that can be written using the pentomino name letters FILNPTUVWXYZ and other related curiosities, including a homage to Georges Perec. (English/French). ...
Polyform Curiosities Polyform Curiosities
Polyform Curiosities- Topics include exclusion, compatibility, and wallpaper. Includes examples and charts. ...
Hyperbolic Planar Tessellations Hyperbolic Planar Tessellations
Hyperbolic Planar Tessellations- Don Hatch's page on hyperbolic tesselations with numerous illustrations. ...
Pentomino Relationships Pentomino Relationships
Pentomino Relationships- Symmetries in the families of rectangular solutions. ...
Henri Picciotto's Geometric Puzzles in the Classroom Henri Picciotto's Geometric Puzzles in the Classroom
Henri Picciotto's Geometric Puzzles in the Classroom- Polyform puzzle lessons for math educators to use with their students, including polyominoes, supertangrams, and polyarcs. ...
Polyomino and Polyhex Tiling Polyomino and Polyhex Tiling
Polyomino and Polyhex Tiling- Joseph Myer's tables of polyominoes and of polyomino tilings, in Postscript format. ...
Polygon Puzzle Polygon Puzzle
Polygon Puzzle- Open source polyomino and polyform placement solitaire game. ...
Mathematical Constants and Computation Mathematical Constants and Computation
Mathematical Constants and Computation- Essays, references, links, software. ...
Arabic numerals Arabic numerals
Arabic numerals- Describes the history of the Arabic numeral system that is in use nearly all over the world today. ...
Indian numerals Indian numerals
Indian numerals- Describes the history of the Indian numeral system. ...
FAQ on Special Numbers FAQ on Special Numbers
FAQ on Special Numbers- Answers to Frequently asked questions about special numbers. ...
Catalan Number -- MathWorld Catalan Number -- MathWorld
Catalan Number -- MathWorld- Illustration of the Catalan numbers related to Euler's polygon division problem. ...
Absolutely Abnormal Numbers Absolutely Abnormal Numbers
Absolutely Abnormal Numbers- Published as math.NT/0006089, this note investigates numbers that are normal to no base whatsoever, and writes down explicitly such a number. ...
Grotesque Geometry Grotesque Geometry
Grotesque Geometry- Andrew Crompton's tiling and tessellation images. ...
Triangular Numbers Triangular Numbers
Triangular Numbers- Properties of triangular numbers including reversible, happy, harshad, highly composite, deficient, abundant ones. ...
Jewish Encyclopedia: Numbers and Numerals Jewish Encyclopedia: Numbers and Numerals
Jewish Encyclopedia: Numbers and Numerals- Discusses the uses and symbolism of various numbers in Hebrew literature. ...
Ask Dr. Math: History of the Terms Google and Googleplex Ask Dr. Math: History of the Terms Google and Googleplex
Ask Dr. Math: History of the Terms Google and Googleplex- Explains how these very large numbers (1 followed by a hundred zeroes, and 1 followed by a google of zeroes, respectively) were named. With links to references. F ...
World of Numbers World of Numbers
World of Numbers- Includes a collection of randomly gathered numbers, curios, puzzles, palindromes and primes. ...
Wikipedia - Mathematical constant Wikipedia - Mathematical constant
Wikipedia - Mathematical constant- A list of constants with links to more detailed information. ...
37 Heaven 37 Heaven
37 Heaven- Collects information around the number thirty-seven. ...

Latest sites from Mathematics