2015-12-092015-12-092001http://hdl.handle.net/11441/31601An algorithm for calculating a set ofgenerators ofrepresentative 2-cocycles on semidirect product offinite abelian groups is constructed, in light ofthe theory over cocyclic matrices developed by Horadam and de Launey in [7],[8]. The method involves some homological perturbation techniques [3],[1], in the homological correspondent to the work which Grabmeier and Lambe described in [12] from the viewpoint ofcohomology . Examples ofexplicit computations over all dihedral groups D 4t are given, with aid of Mathematica.application/pdfengAtribución-NoComercial-CompartirIgual 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-sa/4.0/Coding and Information TheorySymbolic and Algebraic ManipulationData EncryptionAlgorithm Analysis and Problem ComplexityComputational Mathematics and Numerical Analysisinfo:eu-repo/semantics/bookPartinfo:eu-repo/semantics/openAccesshttp://dx.doi.org/10.1007/3-540-45624-4_30https://idus.us.es/xmlui/handle/11441/31601