Now showing items 1-3 of 3

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      Determinants of (–1,1)-matrices of the skew-symmetric type: a cocyclic approach 

      Álvarez Solano, Víctor; Armario Sampalo, José Andrés; Frau García, María Dolores; Gudiel Rodríguez, Félix (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 = ...
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      On Skew E–W Matrices 

      Armario Sampalo, José Andrés; Frau García, María Dolores (Wiley, 2016)
      An E–W matrix M is a ( − 1, 1)-matrix of order urn:x-wiley:10638539:media:jcd21519:jcd21519-math-0001, where t is a positive ...
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      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 ...