@article{Amougou Mbarga_2022, title={Subgroups Inclusions in 3-Factors Direct Product}, volume={10}, url={https://earthlinepublishers.com/index.php/ejms/article/view/541}, DOI={10.34198/ejms.10122.195209}, abstractNote={<p>The aim of this paper is to use a correspondent theorem&nbsp;&nbsp; to characterize&nbsp; containment of a degenerate $2$-factor injective subdirect products. Namely, let $\Omega,\Lambda$ be degenerate 2-factor injective subdirect products of $ M_{1}\times M_{2}\times M_{3}$, we provide necessary and sufficient conditions for $\Omega\leq \Lambda.$ Based on a decomposition of the inclusion order on the subgroup lattice of a subdirect product as a relation product of three smaller partial orders, we induce a matrix product of three incidence matrices.</p&gt;}, number={1}, journal={Earthline Journal of Mathematical Sciences}, author={Amougou Mbarga, Brice Réné}, year={2022}, month={Jun.}, pages={195-209} }