Izv. Akad. Nauk SSSR Ser. Mat., 1980, Volume 44, Issue 2

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1980, Volume 44, Issue 2

	Direct theorems of approximation theory on quasiconformal arcs V. V. Andrievskii		243
	On the homology theory of analytic sheaves V. D. Golovin		262
	Tests for the nonsimplicity of factorable groups L. S. Kazarin		288
	An infinite group with subgroups of prime orders A. Yu. Ol'shanskii		309
	Convolution equations on a finite interval for a class of symbols having powerlike asymptotics at infinity B. V. Pal'tsev		322
	Class numbers and groups of algebraic groups. II V. P. Platonov, A. A. Bondarenko, A. S. Rapinchuk		395
	The geometry of the Fano surface of the double cover of $P^3$ branched in a quartic A. S. Tikhomirov		415
	The study of the homology of Kuga varieties V. V. Shokurov		443
	Decomposition of certain birational morphisms V. I. Danilov		465