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Ed Pegg Jr
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Demonstrations 1  20 of 386
Fundamental Unit
New this month
Wheel Graphs with Integer Edges
Updated this month
Choe's Hexagon and Cairo Tiling
New this month
Packing Equal Spheres in a Sphere
The Real and Imaginary Zero Sets of a Complex Polynomial
Melvyn Knight's Problem
Polyform Explorer
Color Blindness
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
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