Abstract
Psi-calculi is a parametric framework for process calculi similar to popular pi-calculus extensions such as the explicit fusion calculus, the applied pi-calculus and the spi calculus. Remarkably, machine-checked proofs of standard algebraic and congruence properties of bisimilarity apply to all calculi within the framework. Bisimulation up-to techniques are methods for reducing the size of relations needed in bisimulation proofs. In this paper, we show how these bisimulation proof methods can be adapted to psi-calculi. We formalise all our definitions and theorems in Nominal Isabelle, and show examples where the use of up to-techniques yields drastically simplified proofs of known results. We also prove new structural laws about the replication operator.
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