Mat. Zametki, 1969, Volume 5, Issue 2

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1969, Volume 5, Issue 2

	Regular elements in the Cremonian group Yu. I. Manin	145
	An application of a numerical criterion of ampleness M. Kh. Gizatullin	149
	Unirationality of certain surfaces A. M. Shermenev	155
	Completely simple topological commutative rings A. F. Mutylin	161
	When are all modules semichain modules? L. A. Skornyakov	173
	Some estimates of the derivatives of algebraic polynomials and their applications to approximate differentiation N. S. Baiguzov	183
	The $p$-variation of functions B. I. Golubov	195
	The absolute convergence of lacunary series V. F. Emel'yanov	205
	Best approximations of functions of several variables by sums of functions of fewer variables V. M. Mordashev	217
	The cohomology ring of the colored braid group V. I. Arnol'd	227
	$K_1$-theory and the congruence problem L. N. Vaserstein	233
	The asymptotic behavior of the spectral function for elliptic operators in an unbounded region G. I. Bass	245
	Non-zero solutions of equations with strong nonlinearities M. A. Krasnosel'skii, Yu. V. Pokornyi	253
	Extension of partial recursive functions and functions with a recursive graph V. A. Dushskii	261

Information
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