Kishon's Poker Game

09/23/2018

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by   Uri Abraham, et al.

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We present an approach for proving the correctness of distributed algorithms that obviate interleaving of processes' actions. The main part of the correctness proof is conducted at a higher abstract level and uses Tarskian system executions that combine two separate issues: the specification of the serial process that executes its protocol alone (no concurrency here), and the specification of the communication objects (no code here). In order to explain this approach a short algorithm for two concurrent processes that we call "Kishon's Poker" is introduced and is used as a platform where this approach is compared to the standard one which is based on the notions of global state, step, and history.