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20 results for “complexity theory”

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math.COcs.CCTheoreticalRecentJul 10, 2026

Cut-homotopies and the complexity of edge-coloring problems

Alexey Barsukov, Roman Feller, Maximilian Hadek, Davide Perinti

The paper shows that every problem asking if a given graph has an edge-coloring without an edge-colored clique from a fixed family is poly-time equivalent to a Constraint Satisfaction Problem, resulti…

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cs.DMmath.COTheoreticalRecentJul 18, 2026

Neighbourhood complexity and identification problems for graphs of bounded treewidth and pathwidth

Gaétan Berthe, Florent Foucaud, Tuomo Lehtilä, Aline Parreau

This paper provides bounds on the neighborhood complexity of graphs with bounded treewidth and pathwidth, and constructs reaching these bounds.

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cs.CCcs.DMcs.LGTheoreticalRecentAug 3, 2026

Optimal Unambiguous DNFs and Alon-Saks-Seymour

Chirag Pabbaraju

This paper constructs unambiguous DNFs with width O(n) and Ω(n^2) 0-certificate complexity, and proves a lifting theorem to communicate the separation in certificate complexity to communication comple…

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cs.ITcs.CCTheoreticalRecentJun 22, 2026

Tighter Bounds for Algorithmic Complexity Estimation Using a Reusable Code-Based Block Decomposition Method

Eduardo Yuji Sakabe, Felipe S. Abrahão, Santiago Hernández-Orozco, Ricardo Gudwin +1 more

The authors extend the Block Decomposition Method (BDM) to utilize dependencies between blocks to reduce description length.

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cs.CCcs.DSTheoreticalRecentJul 2, 2026

Partition Rank and Algebraic Circuit Lower Bounds

Cornelius Brand, Petteri Kaski, Jiaheng Wang

This paper connects a generalized notion of tensor rank with multiplicative complexity, enabling control of arithmetic complexity in any constant degree of multilinearity and applications to fine-grai…

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cs.CCTheoreticalRecentJul 4, 2026

Additional properties of parity based bit-counting complexity classes and hierarchies

Tayfun Pay

The paper studies properties of parity based bit-counting complexity classes B|0|⊕P and B|1|⊕P, proves inclusions and closures, and shows they contain PH and are contained in CH.

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cs.DCcs.CCcs.FLTheoreticalRecentJun 9, 2026

Generalizing LCL Complexity Gaps to Unbounded Degree via Monadic Second-Order Properties

Chiara Piombi

The authors extend the LOCAL model to unbounded degree graphs using Presburger monadic second-order (PMSO) formulas.

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cs.DScs.CCcs.ITTheoreticalRecentJun 9, 2026

A Unified Lower Bound on the Noisy Query Complexity of Boolean Functions

Yuzhou Gu, Xin Li, Yinzhan Xu

The paper provides a general lower bound on the noisy query complexity of Boolean functions in the noisy query model.

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math.OCcs.DMmath.ACTheoreticalRecentJun 15, 2026

Testing the max-flow min-cut property and the replication conjecture

Ahmad Abdi, Tamás Schwarcz

The authors verify the replication conjecture for cuboids of degree at most 9 and clutters over at most 10 elements.

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cs.CCcs.DMTheoreticalRecentJul 9, 2026

The Parameterised Complexity of Temporal Motif Counting, and a Lovász-Style Isomorphism Theorem

Jayakrishnan Madathil, Kitty Meeks, Marc Roth

This paper studies the structural expressivity and parameterized complexity of counting homomorphisms from small temporal patterns to large temporal graphs, proving a temporal Lovász-style theorem, in…

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cs.FLcs.CCTheoreticalRecentJun 30, 2026

Complexity of Universality and Related Decision Problems for Unary Two-Dimensional Automata

Taylor J. Smith

This paper studies the decidability and complexity properties of unary three-way and two-way deterministic and nondeterministic two-dimensional automata.

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cs.CCmath.COTheoreticalRecentJun 28, 2026

On the Complexity of Counting Orderings in Graphs

Marcelo Arenas, María Alejandra Schild, Bernardo Subercaseaux

This paper shows #P-completeness for several graph counting problems using a new technique.

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cs.CCcs.DMcs.DSRecentJun 1, 2026

$O(n +f(k))$: Truly Linear FPT

Benjamin Merlin Bumpus, Rod Downey, Tala Eagling-Vose, Jessica Enright +6 more

The paper introduces and explores Truly Linear FPT (TLFPT), a complexity class defined by $O(n) + f(k)$, demonstrating that it is a strict subset of standard Linear FPT and providing new algorithms fo…

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cs.FLcs.DMTheoreticalRecentJun 9, 2026

On the Complexity of the Bi-infinite Post Correspondence Problem

Olivier Finkel, Vesa Halava

This paper studies the complexity of the bi-infinite Post Correspondence Problem with respect to the arithmetical hierarchy.

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cs.CCRecentMay 31, 2026

On the Complexity of Recurrence Evaluation

Artem Parfenov, Michael Vyalyi

This paper analyzes the computational complexity of evaluating recurrent functions, showing that the complexity depends heavily on how the input offsets are encoded and the structure of the recurrence…

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