Mat. Zametki, 1997, Volume 61, Issue 4

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1997, Volume 61, Issue 4

	On mixed Abelian groups with periodic groups of automorphisms I. Kh. Bekker	483
	Characteristic frequencies of bodies with thin spikes. III. Frequency splitting R. R. Gadyl'shin	494
	Bundle-connection pairs and loop group representations P. Gibilisco	503
	Construction of the extremal function for a functional on the class $H_\omega^{(n)}$ D. V. Gorbachev	519
	Subdifferentiability and superdifferentiability of distance functions S. I. Dudov	530
	The Mathieu–Hill operator equation with dissipation and estimates of its instability index S. V. Zelik	543
	Basic Theonean triangles S. Sh. Kozhegel'dinov	561
	Recurrence of the integral of an odd conditionally periodic function S. V. Konyagin	570
	Filtrations in hyperhomology E. G. Sklyarenko	578
	Convergence of multiple Fourier series for functions of bounded variation S. A. Telyakovskii, V. N. Temlyakov	583
	Stable subsets of modules and the existence of a unit in associative rings A. V. Khokhlov	596
	The quantum stochastic equation is unitarily equivalent to a symmetric boundary value problem for the Schrödinger equation A. M. Chebotarev	612

Brief Communications
	Overlapping of functions F. V. Guseinov	623
	A new technique of second quantization for fermions V. P. Maslov	627
	Functions from the Schoenberg class $\mathscr T$ on the cone of dissipative elements of a Banach algebra A. R. Mirotin	630
	Estimates of the spectrum of some differential operators O. G. Parfenov	634
	Extremality properties of functions and designs on the torus V. A. Yudin	637