ON DIFFERENTIAL GEOMETRY OF THE LORENTZ SURFACES
Abstract
In this paper we have defined the sign functions £1' £2' t3' £4' t5 and the vector fields Xu' Xv' nu and n , which have taken derivatives with (u,v) parameters of the tangent vector field X of any surface in Lorentz space and we get fundamental forms, Weingarten equations, Olin-Rodrigues and Gauss formulae. Beside these we calculate Gauss and mean curvatures.
Keywords
References
- [1] B. O'Neill, Semi Riemannian Geometry With Applications To Relativity, Academic Press. Newyork, 1983.
- [2] R.S. Millman, G.D. Parker, Elements of Differential Geometry, Prentice Hall, Englewood Cliffs, New Jersey, 1987.
- [3] R.W. Sharpe, Differential Geometry, Graduate Text in Mathematics 166,Canada,1997.
- [4] John M. Lee, Riemannian Manifolds, An 'Introduction To Curvature, Graduate Text in Mathematics 176, USA,1997.
- [5] K. Nornizu and Kentaro Yano, On Circles and Spheres in Riemannian Geometry, Math.Ann. ,210, 1974.
Details
Primary Language
English
Subjects
Engineering
Journal Section
Research Article
Publication Date
June 15, 2007
Submission Date
March 16, 2007
Acceptance Date
May 15, 2007
Published in Issue
Year 2007 Number: 013