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20 results for “permutation invariance”

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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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math.COcs.DMTheoreticalRecentJul 5, 2026

When arrow patterns meet classical patterns

Shishuo Fu, Zhenghe Yang

The paper resolves three conjectures related to arrow pattern avoidance in permutations using two different proof methods.

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cs.DScs.DMTheoreticalRecentJun 11, 2026

(Un)ranking Permutation Classes

Nathanaël Hassler, Vincent Vajnovszki

This paper presents methods for ranking and unranking permutations avoiding a pattern of length three in lexicographic or colexicographic order.

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cs.DScs.CCmath.COTheoreticalRecentJul 17, 2026

Contextual Fraction on Permutation Gain Graphs: Exact Algorithms, Query Lower Bounds, and Dynamic Maintenance

Ronald Katende

This paper identifies a tractability island inside the contextual-fraction problem by collapsing it to a fixed-point calculation for a specific class of permutation-transport models.

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cs.CRcs.ITRecentMar 24, 2026

The Power of Power Codes: New Classes of Easy Instances for the Linear Equivalence Problem

Michele Battagliola, Anna-Lena Horlemann, Abhinaba Mazumder, Rocco Mora +3 more

This paper identifies new, algebraically weak classes of instances for the Linear Equivalence Problem (LEP) by generalizing techniques from the Permutation Equivalence Problem (PEP) using power codes…

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cs.DScs.CCmath.CORecentMay 29, 2026

High-Dimensional Expanders, the Sparsest Cut Problem, and Steurer's Conjecture

Farzam Ebrahimnejad, Shayan Oveis Gharan

The paper refutes Steurer's conjecture regarding the existence of large constant-separated sets within families of unit-norm vectors with low average correlation, using high-dimensional expanders to s…

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cs.CCcs.DSmath.COTheoreticalRecentJul 17, 2026

On the CGGRT Criterion for Detecting Bipartite Perfect Matchings in NC

Swastik Kopparty, Shubhangi Saraf

This paper presents a simpler variation of the NC detection criterion for perfect matchings in bipartite graphs with improved parameters.

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cs.ITcs.AImath.CTTheoreticalRecentJul 15, 2026

CAS I: A Geometric Coding Theorem

Romie Banerjee

This paper establishes a Coding Theorem in the context of symmetry groups and develops a connection between subgroups of a group and subsets of binary strings.

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cs.CRcs.DSRecentApr 30, 2026

Variational and Majorization Principles in Lattice Reduction

Javier Blanco-Romero, Florina Almenares Mendoza

The paper uses majorization theory to analyze lattice reduction, showing that local swaps smooth the Gram-Schmidt profile and deriving variational and telescoping identities for the worst-case profile…

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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.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.CRstat.METheoreticalRecentJul 24, 2026

A Maximum Entropy Implementation of Differential Privacy Under Linear Invariants

Ryan Lafferty, Anindya Roy

This paper proposes a high entropy differential privacy implementation that maintains aggregation invariants with probability one or exponentially close to one.

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math.COcs.CGcs.DMTheoreticalRecentJul 6, 2026

One construction for the Miura-ori flip-graph degree sequence

Chakshu Gupta

This paper provides a uniform construction for counting the number of flat-foldable assignments in an origami Miura-ori crease pattern with a specific number of single face flips.

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cs.DScs.CRmath.NTRecentMay 17, 2026

Module Lattice Security (Part III): Structured CVP Distance on the Log-Unit Lattice

Ming-Xing Luo

The paper analyzes the structured CVP distance on the log-unit lattice of cyclotomic fields, significantly reducing the conjectured CDPR factor for the ML-KEM cryptosystem from exponential to sub-poly…

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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.CRRecentMay 20, 2026

Graph Structure of Chebyshev Permutation Polynomials over Binary and Ternary Adic Rings

Xiaoxiong Lu, Yuling Dai, Chengqing Li

This paper characterizes the graph structure, including cycle and path lengths, of Chebyshev permutation polynomials over the ring $\mathbb{Z}_{2^{k_1}3^{k_2}}$, demonstrating strong regularities desp…

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