We extend Duration Calculus to a logic which alows description of Discrete Processes where several steps of computation can occur at the same time point. The resulting logic is called Duration Calculus of Weakly Monotonic Time (WDC). It allows effects such as true synchrony and digitisation to be modelled. As an example of this, we formulate a novel semantics of Timed CSP assuming that the communication and computation take no time.
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