Science Journal Of Mathematics and Statistics, Volume 2016, September 2016

Author(s) 2016. This work is distributed under the Creative Commons Attribution 3.0 License.

Research Article


Some Properties of the Function Corresponding to Analysis of Time Series

Author: Eman A. Farag1, and Ghazal3, M.A2

1Statistical Department, Faculty of Science - AL Faisaliah, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Kingdom of Saudi Arabia

2Mathematics Department, Faculty of Science, Helwan University, Egypt E-mail: &

3Mathematics Department, Faculty of Science, Damietta University, Egypt

Accepted 16 September, 2015; Available Online 25 September 2016

doi: 10.7237/sjms/112


We consider the problem of studying the properties of the function Φ(T)(x, y) which corresponding to analysis of time series by using data window in two different cases; the first in discrete time series and the other in continuous time series. Some examples for the function Φ(T)(x, y) and data window are discussed.

Keyword:Gaussian curvatures, mean curvatures, parallel hypersurfaces, higher order Gaussian curvatures.