Tables of Contents

### Contents of Volume 3, Number 3, 1997price: €80.00

INVITED LECTURE

N. P. Korneichuk
On complexity of approximation problems
251--274

RESEARCH PAPERS

G. G. Oniani
On the differentiability of integrals with respect to the bases $B_2(\theta)$
275--302

Evgeni Matvejev
On the modulus of continuity for $k$-monotone functions
303--316

S. F. Lukomskii
Convergence of multiple Walsh series in measure and in ${L}$
317--332

R. R. Akopyan
Bernstein inequality in $H_2$ for algebraic polynomials with restriction on the zeros
330--350

V. F. Babenko, V. A. Kofanov and S. A. Pichugov
Inequalities for norms of intermediate derivatives of periodic functions and their applications
351--376

OPEN PROBLEMS

Allan Pinkus
Uniqueness of smoothest interpolants
377--380

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