Singularities for Focal Sets of Timelike Sabban Curves in de Sitter 3-Space
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DOI: 10.3390/sym14122471
Abstract: In the theory of cosmology, de Sitter space is the symmetrical model of accelerated expansions of the universe. It is derived from the solution of the Einstein field equation, which has a positive cosmological constant.… read more here.
Keywords: curves sitter; sabban curves; focal surfaces; timelike sabban ... See more keywords