Alp, MuratDavvaz, Bijan2019-08-012019-08-0120150253-41420973-7685https://dx.doi.org/10.1007/s12044-015-0212-0https://hdl.handle.net/11480/3977In this paper, we introduce the concept of pullback and pushout crossed polymodules and we describe the construction of pullback and pushout crossed polymodules. In particular, by using the notion of fundamental relation, we obtain a crossed module from a pullback crossed polymodule.eninfo:eu-repo/semantics/closedAccessCrossed modulepolygroupcrossed polymoduleactionpullbackpushoutfundamental relationArticle1251112010.1007/s12044-015-0212-02-s2.0-84930409568Q3WOS:000352370900002Q4