Author/Authors :
NAJAFI، B نويسنده Department of Science, Shahed University, Tehran, I. R. of Iran , , BIDABAD، B نويسنده Department of Mathematics and Computer Science, Amir Kabir University, Tehran, I. R. of Iran , , TAYEBI، A نويسنده Department of Mathematics, Faculty of Science, The University of Qom, Qom, I. R. of Iran ,
Abstract :
We prove that every R-quadratic metric of scalar flag curvature with a dimension greater than two
is of constant flag curvature. Then we show that generalized Douglas-Weyl metrics contain R-quadratic
metrics as a special case, but the class of R-quadratic metric is not closed under projective transformations.