Abstract

We consider the realization of Boolean functions by combinatorial circuits with unreliable gates computing the functions from a complete final basis B. We assume that all gates of the basis can have inverse faults on the outputs independently with probability e (e ∈ (0, 1/2)). We describe a set Mk (k ≥ 3) of Boolean functions, presence even by one of which in basis B guarantees the computing of almost all Boolean functions by asymptotically optimal circuits with unreliability e at e → 0. We prove that, for almost all functions, the complexity of asymptotically circuits with unreliable gates exceeds the complexity of the minimal circuits constructed from absolutely reliable gates by a multiplicative factor of 3(1 + b) for any b > 0.

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