The evolution of systems in random media is a broad and fruitful field for the applica­ tions of different mathematical methods and theories. This ...

The theory of U-statistics goes back to the fundamental work of Hoeffding [1], in which he proved the central limit theorem. During last forty years the ...

During the investigation of large systems described by evolution equations, we encounter many problems. Of special interest is the problem of "high dimensionality" ...