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Öğe CAT(1)-POLYGROUPS AND PULLBACK CAT(1)-POLYGROUPS(SPRINGER SINGAPORE PTE LTD, 2014) Davvaz, B.; Alp, M.In 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.












