Singularity Theory and Gravitational Lensing
A. O. PettersDepartment of Mathematics, Duke University, Durham, USAHarold LevineDepartment of Mathematics, Brandeis University, Waltham, USAJ. WambsganßAstrophysikalisches Institut Potsdam, Universität Potsdam, Potsdam, Germany
2001en
ABI
Abstract
Astronomers do not do experiments. They observe the universe primarily through detect ing light emitted by stars and other luminous objects. Since this light must travel through space to reach us, var
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