عنوان	Ricci collineation on three-dimensional Lie group E(2)
نوع پژوهش	مقاله ارائه شده
کلیدواژه‌ها	Flat Euclidean plane, Flat Lorentzian plane, Ane vector elds, Ricci collineation, Matter collineation.
چکیده	In this paper, we obtain a full classi cation of Ricci collineations and matter collineations over the group E(2) (rigid motions of Euclidean 2-space). Also Ricci, curvature and matter collineations of the group E(1; 1) (rigid motions of Minkowski 2-space) are obtained.
پژوهشگران	علی حاجی بدلی (نفر دوم)، پروانه آتش پیکر (نفر اول)