Mat. Zametki, 2001, Volume 70, Issue 6

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2001, Volume 70, Issue 6

	On the Fourier–Haar Coefficients of Functions of Several Variables with Bounded Vitali Variation S. Yu. Galkina	803
	Feynman's Operational Calculi for Noncommuting Systems of Operators: Tensors, Ordered Supports, and Disentangling an Exponential Factor B. Jefferies, G. W. Johnson	815
	First Integrals of Groups of Complex Linear Transformations and of Natural Mechanical Systems with Homogeneous Potential S. L. Ziglin	839
	The Frobenius Problem for Classes of Polynomial Solvability I. D. Kan	845
	Coherent Transforms and Irreducible Representations Corresponding to Complex Structures on a Cylinder and on a Torus M. V. Karasev, E. M. Novikova	854
	Some Generalizations of the Notion of Length B. A. Kats	875
	Convergence of Walsh Series in Near-$L^\infty$ Spaces S. F. Lukomskii	882
	Mean Values of Multiplicative Functions with Weight N. M. Timofeev, S. T. Tulyaganov	890
	$\operatorname{IA}$-Automorphisms of Free Products of Two Abelian Torsion-Free Groups P. V. Ushakov	909
	Generalized Volume Ratios and the Banach–Mazur Distance A. I. Khrabrov	918
	Iso-Huygens Deformations of Homogeneous Differential Operators Related to a Special Cone of Rank 3 S. P. Khekalo	927
	Multidimensional Versions of Paley's Inequality V. A. Yudin	941

Brief Communications
	Parabolicity and Hyperbolicity Conditions for Boundary Elements of Surfaces A. P. Karmazin	948
	Evolute Surfaces in $E^4$ M. A. Cheshkova	951