On Killing Vector Fields of a Homogeneous and Isotropic Universe in Closed Model


X iv :0 70 8. 25 08 v1 [ m at h. D G ] 1 9 A ug 2 00 7 ON KILLING VECTOR FIELDS OF A HOMOGENEOUS AND ISOTROPIC UNIVERSE IN CLOSED MODEL. R. A. Sharipov Abstract. Killing vector fields of a closed homogeneous and isotropic universe are studied. It is shown that in general case there is no time-like Killing vector fields in such a universe. Two exceptional… (More)