Abstract
We present some global results on Lorentzian geometry obtained by using global variational methods. In particular some results on the geodesic connectedness of Lorentzian manifolds and on the multiplicity of lightlike geodesies joining a point with a timelike curve are presented. Such results allow to give a mathematical description of the gravitational lens effect.
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Masiello, A. (2000). Applications of Calculus of Variations to General Relativity. In: Casciaro, B., Fortunato, D., Francaviglia, M., Masiello, A. (eds) Recent Developments in General Relativity. Springer, Milano. https://doi.org/10.1007/978-88-470-2113-6_14
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DOI: https://doi.org/10.1007/978-88-470-2113-6_14
Publisher Name: Springer, Milano
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