given a pair (semispray $s$, metric $g$) on a tangent bundle, the family of nonlinear connections $n$ such that $g$ is recurrent with respect to $(s, n)$ with a fixed recurrent factor is determined by using the obata tensors. in particular, we obtain a characterization for a pair $(n, g)$ to be recurrent as well as for the triple $(s, stackrel{c}{n}, g)$ where $stackrel{c}{n}$ is the canonical ...

In this article, our main purpose is to define the p , q -variant of Szász-Durrmeyer type operators with help Dunkl generalization generated by an exponential function. We estimate moments and establish some direct results aforementioned operators. ...