Parallel fault-tolerant computation structure

A parallel fault-tolerant computation structure (p.f.t.n.) is introduced, consisting of a control structure and a device structure. The control structure (c.f.n.) models parallel-system synchronisation and graceful degradation by reconfiguration after fault occurrence. The device structure models the parallel data flow. Liveness conditions of a c.f.n. are discussed, and a relationship between liveness and net configuration is developed and proved.