Martins-Ferreira, NelsonSobral, Manuela2025-11-262025-11-262012-08Nelson Martins-Ferreira, Manuela Sobral, On categories with semidirect products, Journal of Pure and Applied Algebra, Volume 216, Issues 8–9, 2012, Pages 1968-1975, ISSN 0022-4049, https://doi.org/10.1016/j.jpaa.2012.02.035.0022-4049http://hdl.handle.net/10400.8/14750Necessary and sufficient conditions for a pointed category to admit semidirect products, in the sense of Bourn and Janelidze (1998) [3], are provided and interpreted in terms of protomodularity and exactness of appropriate split chains.engjournal article10.1016/j.jpaa.2012.02.035