In this paper, we obtain the necessary and sufficient conditions thet a given function must satisfy in odrer to be a correlation function of dilation of rank of homogeneous stochatic field. We also consider a linear transformation of special type of homogeneous stochatic field and we obtain the form of its correlation function. These two examples of linear transformation of stochastic field show how to use the results of theory of linear operators to study the surfaces in Hiberts space. One wants that element failures let the messages delay as small as possible. We study in both general and bipartite cases the variation of the diameter when one vertex fails.
M be the tangent bundle of order .
M fibr tangent d'ordre r . I n this article, we use non standard analysis to give the infinitesimal form of the metric invariants associated to standard non singular points of stantard curve C .