Imposing certain conditions on the noise, this paper proves that multidimensional AR system A(z)y k=w k being stable in the mean square, by which it is meant that the long run average of the squared output is bounded: lim sup n→∞1n ∑nk=1‖ y k‖ 2<∞ , hasn t any explosive roots, i.

Objective To investigate the expression of androgen receptor, retinoblastoma and cyclinDl for the purpose to evaluate their prognostic function in gastric cancer relationship.