Markov number

Named after Andrey Markov (Russian: Андре́й Ма́рков; 1856–1922), Russian mathematician.

Markov number (plural Markov numbers)

1. A positive integer x, y or z that is part of a solution to the Markov Diophantine equation ${\displaystyle x^{2}+y^{2}+z^{2}=3xyz}$ .