 A negative result, obtained in this way, is not convincing by itself; a solution with the necessary degree of generality would invalidate it, and at the same time would confirm any positive results related to the specific solution.At that time, the only known indication was related to the form of the Einstein equations written in a synchronous frame, that is, in a frame in which the proper time "x"0 = "t" is synchronized throughout the whole space; in this frame the space distance element "dl" is separate from the time interval "dt".The Einstein equation written in synchronous frame gives a result in which the metric determinant "g" inevitably becomes zero in a finite time irrespective of any assumptions about matter distribution.