Spacelike ruled surfaces with stationary Disteli-axis

Author:

Mofarreh Fatemah1,Abdel-Baky Rashad A.2

Affiliation:

1. Mathematical Science Department, Faculty of Science, Princess Nourah bint Abdulrahman University, Riyadh 11546 Saudi Arabia

2. Department of Mathematics, Faculty of Science, University of Assiut, 71516 Assiut, Egypt

Abstract

<abstract><p>This paper derives the expressions for spacelike ruled surfaces with stationary Disteli-axis by means of the E. Study map. This provides the ability to compute a set of Lorentzian curvature functions which define the local shape of spacelike ruled surfaces. Consequently, some well-known formulae of surface theory at Lorentzian line space and their geometrical explanations are obtained and examined. Lastly, a characterization for a spacelike line trajectory to be a constant Disteli-axis is derived and investigated in detail.</p></abstract>

Publisher

American Institute of Mathematical Sciences (AIMS)

Subject

General Mathematics

Reference20 articles.

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2. A. Karger, J. Novak, Space kinematics and Lie groups, New York: Gordon and Breach Science Publishers, 1985.

3. H. Pottman, J. Wallner, Computational line geometry, Berlin: Springer-Verlag, 2001. http://dx.doi.org/10.1007/978-3-642-04018-4

4. R. Abdel-Baky, F. Al-Solamy, A new geometrical approach to one-parameter spatial motion, J. Eng. Math., 60 (2008), 149–172. http://dx.doi.org/10.1007/s10665-007-9139-5

5. R. Abdel-Baky, R. Al-Ghefari, On the one-parameter dual spherical motions, Comput. Aided Geom. D., 28 (2011), 23–37. http://dx.doi.org/10.1016/j.cagd.2010.09.007

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