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Bound-Founded Semantics for Answer Set Programming with Difference Constraints: Preliminary Report

Primary research

#711

T1new
Topic
unassigned (set during synthesis)
First seen
2026-07-24 07:15:55
Last seen
2026-07-24 07:15:55

Source raw items (1)

  • arXiv2026-07-24 07:15:13
    Bound-Founded Semantics for Answer Set Programming with Difference Constraints: Preliminary Report

    While the integration of linear constraints has significantly expanded the reach of Answer Set Programming (ASP), existing hybrid solvers often rely on disparate semantic underpinnings that lack a unified logical foundation. We address this gap by introducing a many-sorted variant of the Bound-founded Logic of Here-and-There (HTb), providing a versatile framework capable of characterizing equilibrium models across a wide spectrum of alternative semantics for extensions of ASP with linear constraints. We apply this framework to the setting of difference constraints, focusing on the semantic characterization of clingo[DL]. Central to our approach is the formalization of foundedness for numeric variables. By investigating how different hybrid systems - such as clingo[DL], clingcon, and flingo - justify constraint atoms, we uncover the semantic roots of their varying behaviors. This investigation results in a single, consistent framework that not only formalizes the foundations of current systems like clingo[DL] but also facilitates the rigorous study of program simplifications and the future integration of diverse semantic principles.