Zap. Nauchn. Sem. POMI, 2025, Volume 545

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JOURNALS // Zapiski Nauchnykh Seminarov POMI // Archive

2025, Volume 545

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General information

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Contents

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Investigations on linear operators and function theory. Part 53

	On the positive definiteness of Schoenberg matrices A. V. Agibalova, L. L. Oridoroga		5
	Algorithm for constructing related spanning directed forests of minimal weight V. A. Buslov		17
	Some extremal problems for martingale transforms. III V. I. Vasyunin		36
	Approximation orders of periodic Parseval wavelet frames A. A. Gorshanova, E. A. Lebedeva		84
	Isomorphism problem and averaging for nondifferential operators I. O. Gushchin, S. V. Kislyakov		111
	Pair correlations of zeta zeros and perturbations of selfadjoint operators D. Zaporozhets, V. Kapustin		125
	Remark about a property of a projector onto a complemented subspace in a nuclear Köthe space V. M. Kaplitskii		137
	Generalization of a theorem of I. I. Privalov A. S. Kolpakov, N. A. Shirokov		145
	Multiplicative polynomial approximation A. N. Medvedev, N. A. Shirokov		157
	Weak factorization of Paley–Wiener spaces D. V. Rutsky		168
	Entire functions of exponential type in the problem of approximation on disjoint segments O. V. Silvanovich, N. A. Shirokov		179

© Steklov Math. Inst. of RAS, 2026