{"product_id":"9780691085142","title":"Cosmology in (2 + 1) -Dimensions, Cyclic Models, and Deformations of M2,1 (Annals of Mathematics Studies)","description":"\u003cp\u003eDo 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 deals with the deformation theory of M2,1 (which furnishes almost all the known examples of these objects).\u003c\/p\u003e","brand":"Princeton University Press","offers":[{"title":"Default Title","offer_id":48673954332907,"sku":"00000_00000_00000_00000","price":184.95,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/4484\/5803\/files\/9780691085142-1.jpg?v=1781632272","url":"https:\/\/kinokuniya.com.sg\/products\/9780691085142","provider":"Books Kinokuniya Singapore","version":"1.0","type":"link"}