Mat. Zametki, 2019, Volume 105, Issue 6

JOURNALS // Matematicheskie Zametki // Archive

2019, Volume 105, Issue 6

	A New Proof of the Protasov–Voynov Theorem on Semigroups of Nonnegative Matrices Yu. A. Alpin, V. S. Al'pina	807
	The Composition Operator on Mixed-Norm Lebesgue Spaces N. A. Evseev, A. V. Menovshchikov	816
	Homogeneous Locally Nilpotent Derivations of Nonfactorial Trinomial Algebras Yu. I. Zaitseva	824
	Solvability of a Thermoviscoelastic Model of the Motion of Solutions of Polymers Satisfying the Objectivity Principle A. V. Zvyagin	839
	Kostant Prequantization of Symplectic Manifolds with Contact Singularities D. B. Zot'ev	857
	Orthogonal Bases of Involution in Hadamard Algebras D. N. Ivanov	879
	Counterexamples to Borsuk's Conjecture with Large Girth R. I. Prosanov	890
	On Formal Buchstaber Groups of Special Form A. V. Ustinov	899
	Estimate of the Norm of the Hermite–Fejér Interpolation Operator in Sobolev Spaces A. I. Fedotov	911

Brief Communications
	On Hamiltonian Systems Integrable in Elliptic Functions That Describe Waves over Underwater Banks and Ridges Yu. V. Brezhnev, A. V. Tsvetkova	926
	Inverse Problems for the Sturm–Liouville Operator with Discontinuity Conditions I. M. Guseinov, F. Z. Dostuev	932
	On the Homogenization of Periodic Hyperbolic Systems Yu. M. Meshkova	937
	On Some Nonlinear Diophantine Inequalities with Primes A. P. Naumenko	943
	Example of a Stable but Fiberwise Nonstable Bundle on the Twistor Space of a Hyper-Kähler Manifold A. Yu. Tomberg	949

Papers published in the English version of the journal
	A Short Note on a $q$-Analog of Modified Stancu–Beta Operators P. Sharma, G. S. Rathore	881–887
	Some Results on the ${\mathcal F}{\Phi}$-Hypercenter of Finite Groups J. P. Tang, J. Zhang	888–893