Published online by Cambridge University Press: 20 November 2018
Recently C. A.Rogers (2, Theorem 4) proved the following theorem which applies to many problems in geometry of numbers:
Let f(X1,X2, … , Xk) be a non-negative B or el-measurable function in the nk-dimensional space of points (X1,X2. Further, let Λo be the fundamental lattice, Ω a linear transformation of determinant 1, F a fundamental region in the space of linear transformations of determinant 1, defined with respect to the subgroup of unimodular transformations and μ(Ω) the invariant measure1 on the space of linear transformations of determinant 1 in Rn.