TY - JOUR TI - Categories internal to crossed modules AB - In this study, internal categories in the category of crossed modules are characterized and it has been shown that thereis a natural equivalence between the category of crossed modules over crossed modules, i.e. crossed squares and thecategory of internal categories within the category of crossed modules. Finally, we obtain examples of crossedsquares using this equivalence. AU - MOHAMMED, Jihad Jamil AU - Şahan, Tunçar DO - 10.16984/saufenbilder.472805 PY - 2019 JO - Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi VL - 23 IS - 4 SN - 1301-4048 SP - 519 EP - 531 DB - TRDizin UR - http://search/yayin/detay/313310 ER -