A continuous-time stochastic process is called a semi-Markov process or 'Markov renewal process' if the embedded jump chain (the discrete process registering what values the process takes) is a Markov chain, and where the holding times (time between jumps) are random variables with any distribution, whose distribution function may depend on the two states between which the move is made. A semi-Markov process where all the holding times are exponentially distributed is called a continuous time Markov chain/process

Georgi Markov was born on March 1, 1929.

Georgi Markov was born on March 1, 1929.

H. Hirschmann has written:

'The semi-Markov process, generalizations and calculation rules for application in the analysis of systems' -- subject(s): Markov processes