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20 results for “Understanding of polyominoes, generating functions”

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cs.DMEmpiricalRecentJun 11, 2026

k-Convex Polyominoes by Semi-perimeter

Andrew R. Conway, Anthony J. Guttmann

The paper provides the conjectured solution for the generating function of k-convex polyominoes, based on analysis of generated enumeration data.

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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.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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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.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.ITcs.CRRecentMay 22, 2026

On APN Exponents and the Differential and Boomerang Properties of Binomials in Characteristic 3

Namhun Koo, Soonhak Kwon, Minwoo Ko, Byunguk Kim

This paper systematically analyzes binomial functions over $\mathbb{F}_{p^n}$ in characteristic 3, providing a classification and rigorous proof of specific classes of exponents that yield extremely l…

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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.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.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.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.DMTheoreticalRecentJun 11, 2026

A Class of Multiparameter Signless Stirling Numbers of the First Kind and their $q$-Analogues

Violetta E. Piperigou, Malvina G. Vamvakari

This paper provides a probabilistic derivation of multiparameter signless Stirling numbers and their q-analogues.

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math.CTcs.CRRecentMar 17, 2026

From Torsors to Topoi: An Introduction with a View Toward $Σ$-Protocols in Cryptography

Takao Inoué

This paper provides a focused, preparatory introduction to sheaves and topoi, establishing the necessary structural background to understand the advanced sheaf-theoretic framework used in cryptographi…

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cs.CRRecentApr 30, 2026

SBN Explorer: An Empirical Study of Cryptographic Boolean Networks

Arnaud Valence

The paper systematically explores a vast design space of cryptographic Boolean networks by formalizing six structural constraints, finding that optimal designs result from sparse, mutually compatible…

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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.CRmath.NTRecentApr 6, 2026

Cryptanalysis of the Legendre Pseudorandom Function over Extension Fields

Daksh Pandey

This paper provides the first comprehensive cryptanalysis of the Legendre Pseudorandom Function over extension fields, demonstrating key recovery attacks under both passive and active threat models.

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cs.CRquant-phRecentApr 17, 2026

Module Lattice Security (Part I): Unconditional Verification of Weber's Conjecture for $k \le 12$

Ming-Xing Luo

This paper provides the first unconditional proof for Weber's Conjecture for the case $k ext{ up to } 12$, which is crucial for lattice-based cryptography.

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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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cs.CGmath.ATmath.CORecentMay 29, 2026

Towards fast computation of higher discrete homology

Jacob Ender, Chris Kapulkin

The paper presents a novel and significantly faster algorithm for computing the second discrete homology group of a graph by identifying five basic quotient shapes of the 3-cube.

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