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A line is considered a circle with infinite radius and zero curvature . Any employee who moves to a NAF instrumentality shall be reported by the losing Federal Government employing agency to the TSP recordkeeper as having transferred to a NAF instrumentality of the DOD or Coast Guard rather than as having separated from Government service . It takes more than 6 billion bits , recorded on a spiral track several kilometers long but only 0.5 micrometer wide , to capture the entire symphony . In this way , institutional repositories provide a venue for a greater proportion of researchers to register their work in a recognized forum . Carroll focused on a characteristic of simplexes described by the term homology .