عنوان	LORENTZIAN 3-MANIFOLDS WITH COMMUTING CURVATURE OPERATORS
نوع پژوهش	مقاله چاپ شده
کلیدواژه‌ها	Curvature operators; Ricci and skew symmetric curvature operators; Walker metrics; symmetric and homogeneous Lorentz metrics.
چکیده	Three-dimensional Lorentzian manifolds with commuting curvature operators are studied. A complete description is given at the algebraic level. Consequences are obtained at the differentiable setting for manifolds which additionally are assumed to be locally symmetric or homogeneous.
پژوهشگران	علی حاجی بدلی (نفر دوم)، Eduardo Garcia-Rio (نفر اول)، Ramon Vazquez_Lorenzo (نفر چهارم)، María Elena Vázquez-Abal (نفر سوم)