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For data consistency in distributed information systems, it is often necessary to compare remotely located copies of a file. We develop several protocols for the efficient detection of differing pages in a replicated file in different communication and failure models. The first set of protocols...
We set out a modal logic for reasoning about multilevel security of probabilistic systems. This logic contains expressions for time, probability, and knowledge. Making use of the Halpern-Tuttle framework for reasoning about knowledge and probability, we give a semantics for our logic and prove...
This paper formulates necessary and sufficient conditions on the information required for enforcing causal ordering in a distributed system with asynchronous communication. The paper then presents an algorithm for enforcing causal message ordering. The algorithm allows a process to multicast to...
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