عنوان	Characterization of the Killing and homothetic vector fields on Lorentzian pp-wave four-manifolds
نوع پژوهش	مقاله ارائه شده
کلیدواژه‌ها	PP-wave manifold, Killing vector field, Homothetic vector field, Lorentzian.
چکیده	We consider the Lorentzian pp-wave four-manifolds. We obtain a full classification of the Killing and homothetic vector fields of these spaces. We also provide an example of killing vector fields on these manifolds.
پژوهشگران	علی حاجی بدلی (نفر دوم)، پروانه آتش پیکر (نفر اول)