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Successor-Invariant First-Order Logic on Classes of Bounded Degree (Extended Abstract)

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Proceedings of the Thirtieth International Joint Conference on Artificial Intelligence. Sister Conferences Best Papers. Pages 4775-4779.

https://doi.org/10.24963/ijcai.2021/649

Abstract

We study the expressive power of successor-invariant first-order logic, which is an extension of first-order logic where the usage of a successor relation on the vertices of the graph is allowed, as long as the validity of formulas is independent on the choice of a particular successor.

We show that when the degree is bounded, successor-invariant first-order logic is no more expressive than first-order logic.

Julien Grange. 2021. Successor-Invariant First-Order Logic on Classes of Bounded Degree (Extended Abstract). In Proceedings of the Thirtieth International Joint Conference on Artificial Intelligence, IJCAI-21. IJCAI, 4775–4779. https://doi.org/10.24963/ijcai.2021/649
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