A graph signal processing approach to Fourier-like number-theoretic transforms

JB Lima, JR de Oliveira Neto - Digital Signal Processing, 2022 - Elsevier
In this paper, we employ a graph signal processing approach to redefine Fourier-like
number-theoretic transforms, which includes the Fourier number transform itself, the Hartley …

Tangent function and Chebyshev-like rational maps over finite fields

JB Lima, RMC de Souza - … on Circuits and Systems II: Express …, 2019 - ieeexplore.ieee.org
The main contribution of this brief is the introduction and the characterization of a novel
Chebyshev-like rational map over finite fields. The referred map is identified as t-Chebyshev …

A Construction of Permutation Polynomials Using R\'{e} dei Function in Even Characteristic

D Panario, N Uyar, Q Wang - arxiv preprint arxiv:2305.03521, 2023 - arxiv.org
The R\'{e} dei function defined over a field of even characteristic has been introduced by
N\"{o} bauer in 1986\cite {even}. In this paper, inspired by the work of Fu et al.\cite {wang} in …

[HTML][HTML] Cosine transforms over fields of characteristic 2

JB Lima, M Barone, RMC de Souza - Finite Fields and Their Applications, 2016 - Elsevier
In this paper, we introduce cosine transforms over fields of characteristic 2. Our approach
complements previous definitions of finite field trigonometric transforms, which only hold for …

Tangent-Chebyshev maps over finite fields: New properties and functional graphs

RBD Figueiredo, JB Lima - Cryptography and Communications, 2022 - Springer
In a recent work, a family of rational maps identified as tangent-Chebyshev maps over finite
fields was introduced. Such maps have potential applicability in cryptography and channel …

A trigonometric approach for Dickson polynomials over fields of characteristic two

JB Lima, D Panario - Applicable Algebra in Engineering, Communication …, 2020 - Springer
In this paper, we first introduce a trigonometric approach for Dickson polynomials of the first
and the second kinds over fields of characteristic two. Employing the proposed concepts, we …

[HTML][HTML] Conical Kakeya and Nikodym sets in finite fields

A Warren, A Winterhof - Finite Fields and Their Applications, 2019 - Elsevier
A Kakeya set contains a line in each direction. Dvir proved a lower bound on the size of any
Kakeya set in a finite field using the polynomial method. We prove analogues of Dvir's result …

A novel approach for defining a Hilbert number transform

JB Lima, MAA Gondim… - Circuits, Systems, and …, 2022 - Springer
In this brief, we introduce a new definition for the Hilbert number transform (HNT). Our
approach employs concepts related to trigonometry over finite fields and uses as a starting …

Generalized trigonometry and Chebyshev functions in finite fields

M Saaltink - Finite Fields and Their Applications, 2023 - Elsevier
Trigonometry in finite fields was introduced by de Souza et al. and further developed by
Lima and Panario and others, giving functions with many properties similar to trigonometric …

Mapas tangente-Chebyshev sobre corpos finitos: contribuições teóricas e cenários de aplicação

RBD FIGUEIREDO - 2023 - bdtd.ibict.br
O estudo de mapas definidos sobre corpos finitos tem despertado grande interesse da
comunidade científica interessada tanto em aspectos teóricos, quanto em cenários de …