О порядках приближения классов полиномами по обобщенной системе Хаара

A generalized anysotropic Lorentz space is considered. A sufficient condition of embedding the class $H_{\varphi,\theta}^r$ into the Lorentz space is formulated; and the degree of approximation of this class sums by polynomials with respect to the generalized Haar system is determined.