RANDOM GRAMMARS AND GRAPH GRAMMARS V.A. Malyshev, INRIA, Frankrike A new class of concrete stochastic processes is defined embracing all known classes of processes such as branching processes, queuing systems, fractals and processes with a local interaction. This class of processes is based on central notions of computer science: grammar and graph grammar. It also has strong connections with modern mathematical physics. Main results concern thermodynamic limit for such processes. Only basic knowledge of stochastic processes is assumed.