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Related papers: Weighted First-Order Model Counting in the Two-Var…

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We show that the satisfiability and finite satisfiability problems for the two-variable fragment of first-order logic with counting quantifiers are both in NEXPTIME, even when counting quantifiers are coded succinctly.

Logic in Computer Science · Computer Science 2024-04-19 Ian Pratt-Hartmann

In Weighted Model Counting (WMC) we assign weights to Boolean literals and we want to compute the sum of the weights of the models of a Boolean function where the weight of a model is the product of the weights of its literals. WMC was…

Quantum Physics · Physics 2020-02-18 Fabrizio Riguzzi

We study the expressive power of the two-variable fragment of order-invariant first-order logic. This logic departs from first-order logic in two ways: first, formulas are only allowed to quantify over two variables. Second, formulas can…

Logic in Computer Science · Computer Science 2022-07-12 Julien Grange

First-order model counting (FOMC) is the problem of counting the number of models of a sentence in first-order logic. Since lifted inference techniques rely on reductions to variants of FOMC, the design of scalable methods for FOMC has…

Logic in Computer Science · Computer Science 2025-06-11 Ananth K. Kidambi , Guramrit Singh , Paulius Dilkas , Kuldeep S. Meel

Combinatorial counting problems pervade artificial intelligence, statistics, and discrete mathematics. Whether the task is enumerating subsets, multisets, permutations, partitions, or compositions under structural and arithmetic…

Artificial Intelligence · Computer Science 2026-05-26 Yuanhong Wang , Juhua Pu , Yuxu Zhou , Yuyi Wang , Ondřej Kuželka

The uniform one-dimensional fragment of first-order logic was introduced a few years ago as a generalization of the two-variable fragment of first-order logic to contexts involving relations of arity greater than two. Quantifiers in this…

Logic in Computer Science · Computer Science 2023-10-03 Emanuel Kieroński

We consider weighted structures, which extend ordinary relational structures by assigning weights, i.e. elements from a particular group or ring, to tuples present in the structure. We introduce an extension of first-order logic that allows…

Logic in Computer Science · Computer Science 2020-09-23 Steffen van Bergerem , Nicole Schweikardt

One-dimensional fragment of first-order logic is obtained by restricting quantification to blocks of existential (universal) quantifiers that leave at most one variable free. We investigate this fragment over words and trees, presenting a…

Logic in Computer Science · Computer Science 2024-04-08 Emanuel Kieronski , Antti Kuusisto

First-order model counting emerged recently as a novel reasoning task, at the core of efficient algorithms for probabilistic logics. We present a Skolemization algorithm for model counting problems that eliminates existential quantifiers…

Artificial Intelligence · Computer Science 2014-03-06 Guy Van den Broeck , Wannes Meert , Adnan Darwiche

We consider the problems of weighted constrained sampling and weighted model counting, where we are given a propositional formula and a weight for each world. The first problem consists of sampling worlds with a probability proportional to…

Quantum Physics · Physics 2024-07-19 Fabrizio Riguzzi

The satisfiability problem for First-order Modal Logic (\FOML) is undecidable even for simple fragments like having only unary predicates, two variables etc. Recently a new way to identify decidable fragments of \FOML has been introduced…

Logic in Computer Science · Computer Science 2025-06-03 Varad Joshi , Anantha Padmanabha

We consider a first-order logic for the integers with addition. This logic extends classical first-order logic by modulo-counting, threshold-counting and exact-counting quantifiers, all applied to tuples of variables (here, residues are…

Logic in Computer Science · Computer Science 2024-02-14 Peter Habermehl , Dietrich Kuske

We contribute to the refined understanding of the language-logic-algebra interplay in the context of first-order properties of countable words. We establish decidable algebraic characterizations of one variable fragment of FO as well as…

Logic in Computer Science · Computer Science 2021-07-06 Bharat Adsul , Saptarshi Sarkar , A. V. Sreejith

Weighted model counting (WMC) has proven effective at a range of tasks within computer science, physics, and beyond. However, existing approaches for using WMC in quantum physics only target specific problem instances, lacking a general…

Quantum Physics · Physics 2026-04-29 Dirck van den Ende , Joon Hyung Lee , Alfons Laarman , Henning Basold

We study the logic obtained by endowing the language of first-order arithmetic with second-order measure quantifiers. This new kind of quantification allows us to express that the argument formula is true in a certain portion of all…

Logic in Computer Science · Computer Science 2021-04-27 Melissa Antonelli , Ugo Dal Lago , Paolo Pistone

We show that the existence of a first-order formula separating two monadic second order formulas over countable ordinal words is decidable. This extends the work of Henckell and Almeida on finite words, and of Place and Zeitoun on…

Logic in Computer Science · Computer Science 2022-01-11 Thomas Colcombet , Sam van Gool , Rémi Morvan

During the last decades, a lot of effort was put into identifying decidable fragments of first-order logic. Such efforts gave birth, among the others, to the two-variable fragment and the guarded fragment, depending on the type of…

Logic in Computer Science · Computer Science 2021-10-05 Bartosz Bednarczyk , Maja Orłowska , Anna Pacanowska , Tony Tan

One of the most important queries in knowledge compilation is weighted model counting (WMC), which has been applied to probabilistic inference on various models, such as Bayesian networks. In practical situations on inference tasks, the…

Artificial Intelligence · Computer Science 2026-04-16 Kengo Nakamura , Masaaki Nishino , Norihito Yasuda

We present an algorithm which allows to solve analytically linear systems of differential equations which factorize to first order. The solution is given in terms of iterated integrals over an alphabet where its structure is implied by the…

High Energy Physics - Phenomenology · Physics 2018-12-19 J. Ablinger , J. Blümlein , P. Marquard , N. Rana , C. Schneider

While modal extensions of decidable fragments of first-order logic are usually undecidable, their monodic counterparts, in which formulas in the scope of modal operators have at most one free variable, are typically decidable. This only…

Logic in Computer Science · Computer Science 2025-09-11 Alessandro Artale , Christopher Hampson , Roman Kontchakov , Andrea Mazzullo , Frank Wolter