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cs.LO2025
Two-Variable Logic for Hierarchically Partitioned and Ordered Data
Oskar Fiuk, Emanuel Kieronski, Vincent Michielini
We study Two-Variable First-Order Logic, FO2, under semantic constraints that model hierarchically structured data. Our first logic extends FO2 with a linear order < and a chain of…
cs.LO2025
Revisiting Conjunctive Query Entailment for
Yazmín Ibáñez-García, Jean Christoph Jung, Vincent Michielini +1
We clarify the complexity of answering unions of conjunctive queries over knowledge bases formulated in the description logic , the extension of with tr…
cs.LO2024
On the complexity of Maslov's class
Oskar Fiuk, Emanuel Kieronski, Vincent Michielini
Maslov's class is an expressive fragment of First-Order Logic known to have decidable satisfiability problem, whose exact complexity, however, has not been es…