ACTA SCIENTIARUM MATHEMATICARUM (Szeged)

On approximation by unitary operators

J. Barria, R. Bruzual

Functional models and extended spectral dominance

H. Bercovici, C. Foiaş, C. M. Pearcy, B. Sz.-Nagy

The algebraic representation of semigroups and lattices; representing lattice extensions

R. Birkenhead, N. Sauer, M. G. Stone

Zamečanija o mnogoobrazijah algebraičeskih sistem

S. D. Brodskii, S. R. Kogalovskii

A Mal'cev type condition for the semi-distributivity of congruence lattices

G. Czédli

Contractions with spectral radius one and invariant subspaces

C. Foiaş, C. M. Pearcy, B. Sz.-Nagy

On invariant subspace lattices of $C_{11}$-contractions

L. Kérchy

Classes of universal algebras, their non-factors and periodic rings

R. R. Khazal

Strong approximation and generalized Zygmund class

L. Leindler

Über die absolute Summierbarkeit der Orthogonalreihen

L. Leindler, H. Schwinn

Jordan models and diagonalization of the characteristic function

V. Müller

Generalized Hausdorff matrices bounded on $l^p$ and $c$

B. E. Rhoades

Functionally complete algebras in congruence distributive varieties

I. G. Rosenberg

On the orbit structure of orthogonal actions with isotropy subgroups of maximal rank

J. Szenthe

Fibrations of compact Riemannian manifolds

G. Tóth

A Mal'cev condition for compact congruences to be principal

P. Zlatoš