Minimality Notions via Factorization Systems and Examples

Autor: Thorsten Wißmann
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Logical Methods in Computer Science, Vol Volume 18, Issue 3 (2022)
Druh dokumentu: article
ISSN: 1860-5974
DOI: 10.46298/lmcs-18(3:31)2022
Popis: For the minimization of state-based systems (i.e. the reduction of the number of states while retaining the system's semantics), there are two obvious aspects: removing unnecessary states of the system and merging redundant states in the system. In the present article, we relate the two minimization aspects on coalgebras by defining an abstract notion of minimality. The abstract notions minimality and minimization live in a general category with a factorization system. We will find criteria on the category that ensure uniqueness, existence, and functoriality of the minimization aspects. The proofs of these results instantiate to those for reachability and observability minimization in the standard coalgebra literature. Finally, we will see how the two aspects of minimization interact and under which criteria they can be sequenced in any order, like in automata minimization.
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