TY - JOUR AU - Escuela de Ingenierias Industrial, Informática y Aeroespacial AU - Arias Mosquera, Daniel AU - Ladra, Manuel AU - Matematica Aplicada DA - 2004 SN - 0927-2852 UR - https://hdl.handle.net/10612/21029 AB - [EN] We classify the precrossed module central extensions using the second cohomology group of precrossed modules. We relate these central extensions to the relative central group extensions of Loday, and to other notions of centrality defined in... LA - eng PB - Springer KW - Matemáticas KW - Central extension KW - Precrossed module KW - Cohomology KW - Galois theory TI - Central Extensions of Precrossed Modules DO - 10.1023/B:APCS.0000040555.48968.64 T2 - Applied Categorical Structures VL - 12 M2 - 339 ER -