mohamam
Hello im mohamad i thankyou for your web sit my quastion is
if G is a group then we can make a category with one
objec G ie ob C(G)={G} and Hom(G,G)=G under multiplication of group why this is not concret category can som one prove that?
if G is a group then we can make a category with one
objec G ie ob C(G)={G} and Hom(G,G)=G under multiplication of group why this is not concret category can som one prove that?