Davvaz, B.Alp, M.2019-08-012019-08-0120141017-060X1735-8515https://hdl.handle.net/11480/4162In this paper, we give the notions of crossed polymodule and cat(1)-polygroup as a generalization of Loday's definition. Then, we define the pullback cat(1)-polygroup and we obtain some results in this respect. Specially, we prove that by a pullback cat(1)-polygroup we can obtain a cat(1)-group.eninfo:eu-repo/semantics/closedAccesspolygroupcrossed polymodulecat(1)-groupcat(1)-polygrouppullback cat(1)-polygroupArticle403721735WOS:000341703900013Q4