Column
- Math
Ancient Islamic Penrose Tiles
Medieval Islamic artisans developed a process for creating elaborate, nonrepeating patterns now associated with Penrose tiles.
- Math
Ancient Islamic Penrose Tiles
Medieval Islamic artisans developed a process for creating elaborate, nonrepeating patterns now associated with Penrose tiles.
- Math
The Complexity of TipOver and Other Puzzles
Solving puzzles such as TipOver and River Crossing can be surprisingly difficult.
- Math
Divide-and-Conquer Multiplication
The most efficient way to multiply two large numbers is often far from obvious.
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