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Combinatorics
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Demonstrations 1  20 of 244
Seven Touching Cylinders Puzzle
Updated this month
Infinite Magic Elliptic Curves
Tiles with Finite Convex Spectra
Jarvis March to Find the Convex Hull of a Set of Points in 2D
Visible Points in a Polygon
Social Golfer Problem
Nearest in a Crowd
Constructing a Steiner Tree for Five Points
Generating the Surreal Numbers
0/1Polytopes in 3D
Rubik's Cube
Tiling with Pentominos
Rolling a Cube on a Chessboard
Coverage Probability with the Occupancy Problem
Van der Waerden's Theorem
NowhereNeat Squaring the Square
Congruent Numbers
NoThreeinLine Problem
ErdösSzekeres Tableaux
Ways to Lace Your Shoes
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