On Generalized Spherical Surfaces in Euclidean Spaces
  In the present study we consider the generalized rotational surfaces in Euclidean spaces. Firstly, we consider generalized spherical curves in Euclidean $(n+1)-$space $\mathbb{E}^{n+1}$. Further, we introduce some kind of generalized spherical surfaces in Euclidean spaces $\mathbb{E}^{3}$ and $% \mathbb{E}^{4}$ respectively. We have shown that the generalized spherical surfaces of first kind in $\mathbb{E}^{4}$ are known as rotational surfaces, and the second kind generalized spherical surfaces are known as meridian surfaces in $\mathbb{E}^{4}$. We have also calculated the Gaussian, normal and mean curvatures of these kind of surfaces. Finally, we give some examples. 
Bengu Bayram, Kadri Arslan and Betul Bulca
math.DG