The subject matter of this work is an area of Lorentzian geometry which has not been heretofore much investigated: Do there exist Lorentzian manifolds all of whose light-like geodesics are periodic? A surprising fact is that such manifolds exist in abundance in (2 + 1)-dimensions (though in higher dimensions they are quite rare). This book is concerned with the deformation theory of M2, 1 (which furnishes almost all the known examples of these objects). It also has a section describing conformal invariants of these objects, the most interesting being the determinant of a two dimensional ‘Floquet operator, ‘ invented by Paneitz and Segal.
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भाषा अंग्रेज़ी ● स्वरूप PDF ● पेज 240 ● ISBN 9781400882410 ● फाइल का आकार 9.7 MB ● प्रकाशक Princeton University Press ● शहर Princeton ● देश US ● प्रकाशित 2016 ● डाउनलोड करने योग्य 24 महीने ● मुद्रा EUR ● आईडी 4945360 ● कॉपी सुरक्षा Adobe DRM
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