Author profile: Gudiel Rodríguez, Félix
Institutional data
| Name | Gudiel Rodríguez, Félix |
| Department | Matemática Aplicada I |
| Knowledge area | Matemática Aplicada |
| Professional category | Profesor Titular de Universidad |
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Statistics
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No. publications
27
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No. visits
2722
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No. downloads
2511
| Publications |
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Presentation
 Un nuevo esquema de autenticación gráfica basado en cuadrados latinos
(Universidad de Sevilla. Escuela Técnica Superior de Ingeniería Informática, 2024)
En contraposición a las contraseñas alfanuméricas, los esquemas de autenticación gráfica presentan un entorno amigable más ... |
Article
A computational approach to analyze the Hadamard quasigroup product
(American Institute of Mathematical Sciences (AIMS), 2023)
Based on the binary product described by any Latin square, the Hadamard quasigroup product is introduced in this paper as ... |
Article
Pseudococyclic Partial Hadamard Matrices over Latin Rectangles
(MDPI [Commercial Publisher], 2021)
The classical design of cocyclic Hadamard matrices has recently been generalized by means of both the notions of the cocycle ... |
Article
Hadamard Matrices with Cocyclic Core
(MDPI, 2021)
Since Horadam and de Launey introduced the cocyclic framework on combinatorial designs in the 1990s, it has revealed itself ... |
Article
On Cocyclic Hadamard Matrices over Goethals-Seidel Loops
(MDPI, 2020)
About twenty-five years ago, Horadam and de Launey introduced the cocyclic development of designs, from which the notion ... |
Article
A computational algebraic geometry approach to analyze pseudo-random sequences based on Latin squares
(Springer, 2019)
Latin squares are used as scramblers on symmetric-key algorithms that generate pseudo-random sequences of the same length. ... |
Article
Generating binary partial Hadamard matrices
(Elsevier, 2019)
This paper deals with partial binary Hadamard matrices. Although there is a fast simple way to generate about a half (which ... |
Article
Cocyclic Hadamard matrices over Latin rectangles
(Elsevier, 2019)
In the literature, the theory of cocyclic Hadamard matrices has always been developed over finite groups. This paper ... |
Article
 A Mixed Heuristic for Generating Cocyclic Hadamard Matrices
(Springer, 2018)
A way of generating cocyclic Hadamard matrices is described, which combines a new heuristic, coming from a novel notion ... |
Article
GA Based Robust Blind Digital Watermarking
(Elsevier, 2018)
A genetic algorithm based robust blind digital watermarking scheme is presented. The experimental results show that our ... |
Article
Gröbner bases and cocyclic Hadamard matrices
(Elsevier, 2018)
Hadamard ideals were introduced in 2006 as a set of nonlin-ear polynomial equations whose zeros are uniquely related ... |
| Presentation |
Presentation
Generating partial Hadamard matrices as solutions to a Constraint Satisfaction Problem characterizing cliques
(2017)
A procedure is described looking for partial Hadamard matrices, as cliques of a particular subgraph Gt of Ito’s Hadamard ... |
Presentation
(Pseudo)-cocyclic (structured) Hadamard matrices over (quasi)groups
(2017)
Progressing on a survey of the state of the art of cocyclic constructions for Hadamard matrices, we will prove that the ... |
| Presentation |
Article
On D4t-Cocyclic Hadamard Matrices
(Wiley, 2016)
In this paper, we describe some necessary and sufficient conditions for a set of coboundaries to yield a cocyclic Hadamard ... |
Article
On ZZt × ZZ2 2-cocyclic Hadamard matrices
(Wiley, 2015)
A characterization of ZZt × ZZ22 -cocyclic Hadamard matrices is described, de- pending on the notions of distributions, ... |
Article
Determinants of (–1,1)-matrices of the skew-symmetric type: a cocyclic approach
(Walter de Gruyter GmbH, 2015)
An n by n skew-symmetric type (−1, 1)-matrix K = [ki,j ] has 1’s on the main diagonal and ±1’s elsewhere with ki,j = −kj,i. ... |
Article
Equivalences of Zt×Z22-cocyclic Hadamard matrices
(Cornell University, 2015)
One of the most promising structural approaches to resolving the Hadamard Conjecture uses the family of cocyclic matrices ... |
Article
Embedding cocylic D-optimal designs in cocylic Hadamard matrices
(International Linear Algebra Society, 2012)
A method for embedding cocyclic submatrices with “large” determinants of orders 2t in certain cocyclic Hadamard matrices ... |
Article
The maximal determinant of cocyclic (−1, 1)-matrices over D2t
(Elsevier, 2012)
Cocyclic construction has been successfully used for Hadamard matrices of order n. These -matrices satisfy that and give ... |
| PhD Thesis |
Presentation
Searching for partial Hadamard matrices
(Universidade de Santiago de Compostela, Servicio de Publicaciones, 2010)
Three algorithms looking for pretty large partial Hadamard ma- trices are described. Here “large” means that hopefully ... |
Presentation
ACS Searching for D4t-Hadamard Matrices
(Springer, 2010)
An Ant Colony System (ACS) looking for cocyclic Hadamard matrices over dihedral groups D4t is described. The underlying ... |
Presentation
Rooted Trees Searching for Cocyclic Hadamard Matrices over D4t
(Springer, 2009)
A new reduction on the size of the search space for cocyclic Hadamard matrices over dihedral groups D4t is described, in ... |
Article
Explicit models for perverse sheaves
(European Mathematical Society, 2003)
We consider categories of generalized perverse sheaves, with relaxed constructibility conditions, by means of the process ... |
PhD Thesis
Descripción explícita de t-estructuras sobre espacios estratificados
(2000)
"En el presenta trabajo abordamos la cuestión anterior de la descripción de las categorías de haces perversos desde un ... |