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Reflections and powers of multisorted minions
2021
Algebra Universalis
AbstractClasses 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, Opršal, and Pinsker, the closure of a multisorted minion is characterized in terms of constructions on multisorted relation pairs which are invariant for minions.
doi:10.1007/s00012-020-00707-0
fatcat:eoe5uzusdbdptaevrkugo2awwa