A mathematical term referring to a set of non-negative integers such that no two distinct pairs of numbers from the set have the same difference. In real world terms, its a ruler with no pair of marks measuring the same distance. Useful in fields such as X-ray crystallography and radio astronomy.

The current best known Golomb ruler is:


Testing for new rulers becomes exponentially difficult, and has become the task of distributed.net's OGR competition.

Golomb rulers can play a significant role in combinatorics, coding theory and communications, and Dr. Solomon W. Golomb was one of the first to analyze them for use in these areas,
hence the name.

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