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arXiv · 2001.02931

Reflections and powers of multisorted minions

Erkko Lehtonen·Reinhard Pöschel
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Abstract

Classes of multisorted minions closed under extensions, reflections, and direct powers are considered from a relational point of view. As a generalization of a result of Barto, Opr\v{s}al, and Pinsker, the closure of a multisorted minion is characterized in terms of constructions on multisorted relation pairs which are invariant for minions.

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Erkko Lehtonen, Reinhard Pöschel. 2020-01-09. Reflections and powers of multisorted minions. https://doi.org/10.1007/s00012-020-00707-0

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