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Listar por autor "Gudiel Rodríguez, Félix"
Mostrando ítems 21-27 de 27
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Artículo
On D4t-Cocyclic Hadamard Matrices
Álvarez Solano, Víctor; Armario Sampalo, José Andrés; Frau García, María Dolores; Gudiel Rodríguez, Félix; Güemes Alzaga, María Belén; Osuna Lucena, Amparo (Wiley, 2016)In this paper, we describe some necessary and sufficient conditions for a set of coboundaries to yield a cocyclic Hadamard ...
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Artículo
On ZZt × ZZ2 2-cocyclic Hadamard matrices
Álvarez Solano, Víctor; Gudiel Rodríguez, Félix; Güemes Alzaga, María Belén (Wiley, 2015)A characterization of ZZt × ZZ22 -cocyclic Hadamard matrices is described, de- pending on the notions of distributions, ...
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Ponencia
(Pseudo)-cocyclic (structured) Hadamard matrices over (quasi)groups
Álvarez Solano, Víctor; Armario Sampalo, José Andrés; Falcón Ganfornina, Raúl Manuel; Frau García, María Dolores; Gudiel Rodríguez, Félix; Güemes Alzaga, María Belén; Kotsireas, Ilias (2017)Progressing on a survey of the state of the art of cocyclic constructions for Hadamard matrices, we will prove that the ...
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Artículo
Pseudococyclic Partial Hadamard Matrices over Latin Rectangles
Falcón Ganfornina, Raúl Manuel; Álvarez, Víctor; Frau García, María Dolores; Gudiel Rodríguez, Félix; Güemes Alzaga, María Belén (MDPI [Commercial Publisher], 2021-01-06)The classical design of cocyclic Hadamard matrices has recently been generalized by means of both the notions of the cocycle ...
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Ponencia
Rooted Trees Searching for Cocyclic Hadamard Matrices over D4t
Álvarez Solano, Víctor; Armario Sampalo, José Andrés; Frau García, María Dolores; Gudiel Rodríguez, Félix; Osuna Lucena, Amparo (Springer, 2009)A new reduction on the size of the search space for cocyclic Hadamard matrices over dihedral groups D4t is described, in ...
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Ponencia
Searching for partial Hadamard matrices
Álvarez Solano, Víctor; Armario Sampalo, José Andrés; Frau García, María Dolores; Gudiel Rodríguez, Félix; Güemes Alzaga, María Belén; Martín García, Elena; Osuna Lucena, Amparo (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 ...
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Artículo
The maximal determinant of cocyclic (−1, 1)-matrices over D2t
Álvarez Solano, Víctor; Armario Sampalo, José Andrés; Frau García, María Dolores; Gudiel Rodríguez, Félix (Elsevier, 2012)Cocyclic construction has been successfully used for Hadamard matrices of order n. These -matrices satisfy that and give ...