Title of article :
Shortening null geodesics in Lorentzian manifolds. Applications to closed light rays
Author/Authors :
Antonio Masiello and Paolo Piccione، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1998
Keywords :
Lorentzian manifolds , light rays , Convex sets , Schwarzschild space-time
Journal title :
DIFFERENTIAL GEOMETRY & APPLICATIONS
Journal title :
DIFFERENTIAL GEOMETRY & APPLICATIONS