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   Lightlike submanifolds of a semi-Riemannian manifold of quasi-constant curvature  
   
نویسنده jin d.h. ,lee j.w.
منبع journal of applied mathematics - 2012 - دوره : 2012 - شماره : 0
چکیده    We study the geometry of lightlike submanifolds (m,g,s(tm),s(tm ⊥)) of a semi-riemannian manifold (m̃,g̃) of quasiconstant curvature subject to the following conditions: (1) the curvature vector field ζ of m̃ is tangent to m,(2) the screen distribution s (t m) of m is totally geodesic in m,and (3) the coscreen distribution s (t m ) of m is a conformal killing distribution. © 2012 d. h. jin and j. w. lee.
آدرس department of mathematics,dongguk university, South Korea, department of mathematics,sogang university,sinsu-dong,mapo-gu, South Korea
 
     
   
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