The Lonely Runner Conjecture

An unsolved mystery in combinatorial number theory

Kasper Müller
Cantor’s Paradise
6 min readMay 30, 2023

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6 runners on a circular track — GIF from author

Imagine 8 runners on a circular track of 1 unit length all running at different constant speeds and all starting from the same place. Will each runner be at least 1/8 units of the track away from every other runner at some point in time?

Will each runner eventually become lonely?

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Mathematician, programmer and writer interested in the mysteries of the Universe, fascinated by the human mind, music and things that I don’t understand.