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A Rank-Preserving Gaifman Normal Form for First-Order Logic on Weighted Structures

van Bergerem, Steffen et al.
arXiv (All) · Papers
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logiclogic-in-computer-science
We prove a rank-preserving version of Gaifman's Theorem. Compared to earlier rank-preserving locality theorems (in particular, [Grohe, Kreutzer, Siebertz, JACM 2017]), our theorem is much simpler and yields formulas in exactly the same normal form as Gaifman's original theorem. Furthermore, it holds
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