2 papers
math.LO2026
A Modal Expansion of Kleene Algebras via Twist Structures
Sergio Celani, Paula Menchón, Valeria Miguelez
Kleene triples, introduced by Jalali, provide a representation of arbitrary Kleene algebras in terms of twist-products. We introduce modal Kleene algebras and modal Kleene triples,…
math.LO2026
A bitopological duality for some subordination Boolean algebras
Sergio A. Celani
S4-subordination algebras are a generalization of the closure algebras. In this paper, we give a topological representation for S4-subordination algebras by means of bitopological…