 Thus one arrives at the [[Bianchi classification]] listing the possible types of homogeneous spaces classified by the values of "a", "n"1, "n"2, "n"3 which is graphically presented in Fig.3.In the class A case ("a" = 0), type IX ("n"(1)=1, "n"(2)=1, "n"(3)=1) is represented by octant 2, type VIII ("n"(1)=1, "n"(2)=1, "n"(3)=–1) is represented by octant 6, while type VII0 ("n"(1)=1, "n"(2)=1, "n"(3)=0) is represented by the first quadrant of the horizontal plane and type VI0 ("n"(1)=1, "n"(2)=–1, "n"(3)=0) is represented by the fourth quadrant of this plane; type II (("n"(1)=1, "n"(2)=0, "n"(3)=0) is represented by the interval [0,1] along "n"(1) and type I ("n"(1)=0, "n"(2)=0, "n"(3)=0) is at the origin.