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Combinatorics
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Demonstrations 61  80 of 259
Ant Colony Optimization (ACO)
The Number of Fixed Points in a Random Permutation
Map Maker
Euler Zigzag Numbers
The Satisfiability Threshold
Among Six People, Either Three Know Each Other or Three Are Strangers to Each Other
Some Numbers behind Rubik's Cube
What Triangles Are in the Triangle?
The Traveling Salesman Problem 4: Spanning Tree Heuristic
Matrix Representation of the Permutation Group
The Traveling Salesman Problem 2: 2opt Removal of Intersections
The Traveling Salesman Problem 1: Optimal Paths
The Traveling Salesman Problem 5: Traveling Salesman Path Problem
The Traveling Salesman Problem 3: Nearest Neighbor Heuristic
Permutation Grid Classes
Birds on a Wire Revisited
Seven Cylinders
Maximum Sum Descent
Noncrossing Partitions
Cutting Space into Regions with Four Planes
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