2013 | OriginalPaper | Buchkapitel
Preorders on Monads and Coalgebraic Simulations
verfasst von : Shin-ya Katsumata, Tetsuya Sato
Erschienen in: Foundations of Software Science and Computation Structures
Verlag: Springer Berlin Heidelberg
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We study the construction of preorders on
Set
-monads by the semantic ⊤ ⊤-lifting. We show the universal property of this construction, and characterise the class of preorders on a monad as a limit of a
Card
op
-chain. We apply these theoretical results to identifying preorders on some concrete monads, including the powerset monad, maybe monad, and their composite monad. We also relate the construction of preorders and coalgebraic formulation of simulations.