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20 results for “Permutation theory”

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cs.DMcs.DSEmpiricalRecentJun 11, 2026

Exhaustive Generation of Genus-One Knot and Link Diagrams via Maps on the Torus

Alexander Omelchenko

This paper presents an algorithmic framework for exhaustively generating and tabulating knot and link diagrams on the thickened torus.

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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.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.DMcs.CGTheoreticalRecentJun 11, 2026

On the Counting Sequence of Z-convex Polyominoes

Luca Castelli, Paolo Massazza

This paper presents a set of formulas and equations to compute the longest counting sequence of convex polyominoes of degree of convexity at most 2.

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cs.DMmath.COmath.DSTheoreticalRecentJun 11, 2026

The Curious Case of Reversible Elementary Second Order Cellular Automaton 115

Enrico Formenti, Supreeti Kamylia

The paper proves that the reversible elementary second order cellular automaton rule 115 is periodic when started on finite initial configurations.

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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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cs.DMTheoreticalRecentJun 11, 2026

Fibonacci and Catalan Numbers Meet in Staircase Polyominoes

Jean-Luc Baril, José Luis Ramírez, Samuel Ramírez, Diego Villamizar

This paper derives multivariate generating functions to refine the enumeration of Fibonacci polyominoes.

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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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math.COcs.CRRecentApr 21, 2026

Cyclic Equalizability Characterized by Parikh Vectors

Sarunyu Thongjarast, Sarit Pasiphol, Suthee Ruangwises

This paper completely characterizes cyclic equalizability for two words over any finite alphabet by proving that the words must share the same Parikh vector.

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cs.DMcs.ITTheoreticalRecentJun 11, 2026

Entropic Generation of Binary Words

Olivier Bodini, Francis Durand

This paper introduces a novel algorithm for generating k Hamming weight binary words in linear time while minimizing random bit consumption.

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cs.CRRecentMar 20, 2026

Constraint Migration: A Formal Theory of Throughput in AI Cybersecurity Pipelines

Surasak Phetmanee

The paper develops a formal theory to analyze how throughput changes in AI-enhanced cybersecurity pipelines when stage capacities are perturbed by multipliers.

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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.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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cs.CCRecentMay 31, 2026

Recursive Jump Operators and Optimal Proof Systems

Fabian Egidy

The paper investigates the relationship between optimal proof systems and recursive jump operators, showing that while the existence of a jump operator rules out optimality, the converse is provably h…

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cs.DScs.CCTheoreticalRecentJun 11, 2026

Sketching Intersection Profiles: A Simple Proof and Three Applications

Flavio Chierichetti, Mirko Giacchini, Ravi Kumar, Alessandro Panconesi +2 more

This paper settles the complexity of three sketching problems in graphs and distributions.

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cs.CGRecentMay 31, 2026

On Fréchet Traveling Salesmen Problems

Omrit Filtser, Tzalik Maimon, Michal Moiseev

This paper introduces a new variant of the Traveling Salesman Problem where the goal is to find two paths connecting a set of sites while minimizing the Fréchet distance between the two paths.

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cs.DMTheoreticalRecentJun 11, 2026

Snake Polyominoes of Maximal Area in a Rectangle

Alexandre Blondin Massé, Alain Goupil

This paper presents an algorithm to generate snake-like polyominoes within a given rectangle and provides exact formulas for the maximal area of such polyominoes for certain dimensions.

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quant-phcs.CRmath.CORecentMay 17, 2026

Module Lattice Security (Part IV): Probabilistic Polynomial Quantum Attack on Module-LWE over 2-Power Cyclotomics

Ming-Xing Luo

This paper presents a quantum attack on Module-LWE based lattice schemes like ML-KEM, demonstrating a polynomial-time quantum algorithm with a high success probability.

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quant-phcs.CRcs.ITRecentApr 30, 2026

Quantum Anonymous Secret Sharing with Permutation Invariant Codes

Varin Sikand, Andrew Nemec

The paper proposes a quantum anonymous secret sharing scheme that achieves sender-anonymity by integrating permutation-invariant Quantum Error Correction (QEC) codes and anonymous quantum transmission…

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