In probability theory and statistics, subjects named for Andrey Markov:A Markov chain or Markov process, a stochastic model describing a sequence of possible eventsThe Markov property, the memoryless property of a stochastic processThe Markovians, an extinct god-like species in Jack L. Chalker's Well World series of novels
Markovian Parallax Denigrate, references a mysterious series of Usenet messages