عنوان	The Killing and homothetic vector fields on Walker space-times
نوع پژوهش	مقاله ارائه شده
کلیدواژه‌ها	Lorentzian metric, Walker manifold, Killing and homothetic vector field
چکیده	Our aim in this work is to study the existence of Killing and homothetic vector fields on special classes of Walker space-times, which are very important in general relativity and cosmology.
پژوهشگران	علی حاجی بدلی (نفر دوم)، پروانه آتش پیکر (نفر اول)