 The powers "pl", "pm", "pn" are not arranged in increasing order, reserving the symbols "p"1, "p"2, "p"3 for the numbers in that remain arranged in increasing order.The [[determinant]] of the metric of is

where "v" = l[mn].It is convenient to introduce the following quantities 
The space metric in is anisotropic because the powers of "t" in cannot have the same values.