Albert Einstein Archives and Milton Handler of the American Friends of The Hebrew University worked on the transfer of the material to Jerusalem. In subsequent years, additional material was sent from Einstein's Princeton home. The Bern Dibner Curatorship, which manages the Albert Einstein Archives, was established in 1988 by the Dibner Fund of Connecticut, USA. The first curator of the Einstein Archives was Ze'ev Rosenkranz whose term extended from 1989 to 2003. The catalogue was made available online in 2003. Since 2004, Roni Grosz has been the head of the Archives. The Einstein Archives became part of the Hebrew University's Library Authority in
Albert Einstein may be derived from the Einstein equations. Since the equations of general relativity are non-linear, a lump of energy made out of pure gravitational fields, like a black hole, would move on a trajectory which is determined by the Einstein equations themselves, not by a new law. So Einstein proposed that the path of a singular solution, like a black hole, would be determined to be a geodesic from general relativity itself. This was established by Einstein, Infeld, and Hoffmann for pointlike objects without angular momentum, and by Roy Kerr for spinning objects. In a 1905 paper, Einstein postulated that