Zur Klassifizierung von E INSTEIN ‐Räumen mit Nullstellen der Determinante g

We investigate E INSTEIN spaces with zero's of the determinant g of the metric tensor g ik in synchroneous coordinates ( t , x 1 , x 2 , x 3 ) and show that the method of classifying these zero's according to the order n of g in t is a special case of a weighting method proposed by T REDER [1].