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20 results for “polynomial-time hardness”

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cs.CCTheoreticalRecentJul 21, 2026

On the Complexity of Graph Edit Distance in Restricted Graph Classes

Maximilian Limmer, Nils M. Kriege

The paper investigates the relationship between graph classes, edit cost functions, and computational complexity of the graph edit distance, providing polynomial-time reductions and correspondences.

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cs.CCTheoreticalRecentJul 9, 2026

Minimum Edge-Outerplanar Embeddings are Polynomial-Time Computable

Hantao Yu

This paper proves that the minimum edge-outerplanarity of a planar graph can be computed in polynomial time.

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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.LOcs.CCTheoreticalRecentJun 12, 2026

Algebraic Circuits Over Sum and Shift and Existential Presburger Arithmetic with Divisibility

Ignacio Barros, Michaël Cadilhac, Guillermo A. Pérez

This paper proves that the satisfiability problem of existential Presburger arithmetic extended with divisibility predicates (EPAD) is PP-hard.

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cs.CCTheoreticalRecentJul 7, 2026

A Lower Bound for Read-Once Parity Branching Programs

Ben Lee Volk

This paper proves a new lower bound of $ ildeΩ(n^2)$ for read-once parity branching programs on boolean functions, improving upon the previous bound of $ ildeΩ(n^{1.5})$.

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math.COcs.CCTheoreticalRecentJul 9, 2026

Polynomial Binary Optimization

Endre Boros

The paper develops an explicit multi-linear polynomial form for binary polynomial optimization problems after eliminating a subset of variables, allowing for characterization of new special classes wi…

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cs.DScs.DMmath.COTheoreticalRecentJul 10, 2026

A Polynomial-Time Algorithm for Coloring Perfect Graphs Based on Walk Counting

Amir Ali Ahmadi, Pravesh K. Kothari, Yukai Tang

A new polynomial-time algorithm is presented for optimally coloring perfect graphs using graph-theoretic operations and iterative walk counting.

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cs.CCcs.DSTheoreticalRecentJul 22, 2026

The Polynomial-Time Low-Degree Conjecture is False

Songtao Mao

The polynomial-time low-degree conjecture, which predicts that low-degree indistinguishability, a uniform null distribution, permutation invariance, and independent resampling imply polynomial-time ha…

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cs.DSTheoreticalRecentJul 3, 2026

Optimality-Preserving Data Reduction for Maximum k-Cut (Full Version)

Michael Kaibel, Petra Mutzel

This paper introduces structured cut sets, a novel preprocessing technique for Maximum k-Cut, and extends existing techniques from Maximum Cut. The rules are optimality-preserving and yield significan…

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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.CRRecentApr 12, 2026

Public Key Encryption from High-Corruption Constraint Satisfaction Problems

Isaac M Hair, Amit Sahai

The paper introduces a novel public key encryption scheme with high security by leveraging the conjectured intractability of two types of highly corrupted constraint satisfaction problems (CSPs).

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cs.CCcs.DSRecentMay 30, 2026

Search-space Reduction for Boolean MinCSPs via Essential Constraints

Bart M. P. Jansen, Ruben F. A. Verhaegh

The paper introduces a method to efficiently detect 'essential' constraints in Boolean MinCSPs, significantly reducing the search space for solving these problems and providing a dichotomy theorem for…

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cs.CCcs.DMTheoreticalRecentJul 21, 2026

The Complexity of Domatic Criticality

Holger Spakowski

This paper investigates the complexity of recognizing domatically critical graphs, which are graphs with maximum dominating sets that cannot be increased by deleting any edge.

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cs.CCcs.DMTheoreticalRecentJul 10, 2026

Closing the Complexity Gap for Exact Domatic Number at Three and Four

Holger Spakowski

This paper proves DP-completeness of Exact-3-DNP and Exact-4-DNP by reducing 3SAT to these problems.

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