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Ed Pegg Jr.
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Demonstrations 1  20 of 382
Melvyn Knight's Problem
New this week
Polyform Explorer
Updated this month
Color Blindness
Updated this month
Sylvester's FourPoint Problem
Biggest Little Polyhedron
Billiard Ball Fredkin Gate
Midsphere Tetrahedra and the Canonical Tetrahedron
Catalan Unrank
Centroid of an Arbitrary Hexagon
Spirals to the Unit Circle from Trigonometric Series
A Diagonal Inequality
Rational Rectangles
Word Squares
Representing an Integer by a Sum of Like Powers
Factorizing Mersenne Numbers
Regular Polygons of Edge Length Two
SchrandtUlam Cellular Automata
Small Hadamard Matrices
Right Tetrahedron: de Gua Theorem
The Tetartoid
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