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We investigate, within the UTP framework of Hoare He Designs, the effect of seeing computation as an essentially reversible process. We describe the theoretical link between reversibility and the minimum power requirements of a computation, and we review Zuliani’s work on Reversible Probabilistic Guarded Command Language. We propose an alternative formalisation of reversible computing which accommodates...
We present a prospective-value (pv) semantics for the Generalised Substitution Language. Whereas wp semantics captures the meaning of a computation in terms of the weakest precondition that must be fulfilled for a generalised substitution S to establish any given postcondition Q, pv semantics expresses the meaning of a computation in terms of the value any expression E would take were the computation...
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