We study the almost periodic solutions of Euler equations and of some more general difference equations. We consider two different notions of almost periodic sequences, and we establish some relations between them. We build suitable sequences spaces and we prove some properties of these spaces....

Рассмотрена проблема большого числа локальных экстремумов, возникающих при использовании "прямых" методов идентификации параметров линейных динамических...