Let $S_n$ be a sequence of partial sums of mean zero purely $d$-dimensional i.i.d. random vectors. Necessary and sufficient conditions are given for the existence of ...

This is a preview. Log in through your library . Abstract David R. Richman proved that for n ≥ k ≥ 2 every integral n × n matrix is a sum of seven k-th powers. In this paper, in light of a question ...

Maths Matrices Formulas: Matrices is one of the most important topics in mathematics. The CBSE Class 11 and 12 introduce students to many advanced concepts in mathematics, some of which have ...