14 June

Andrey Andreyevich Markov

Andrey (Andrei) Andreyevich Markov (Russian: Андре́й Андре́евич Ма́рков, in older works also spelled Markoff) (14 June 1856 N.S. – 20 July 1922) was a Russian mathematician. He is best known for his work on stochastic processes. A primary subject of his research later became known as Markov chains and Markov processes.

Markov and his younger brother Vladimir Andreevich Markov (1871–1897) proved Markov brothers' inequality. His son, another Andrei Andreevich Markov (1903–1979), was also a notable mathematician, making contributions to constructive mathematics and recursive function theory.