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Bercovici Hari; Foiaş Ciprian; Szőkefalvi-Nagy Béla: Reflexive and hyper-reflexive operators of class C0. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 5-13. (1981)
Endl Kurt: Beitrag zur Theorie der starken Summierbarkeit mit einer Anwendung auf Orthonormalreihen. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 27-35. (1981)
Gretsky Neil E.; Uhl J. Jerry: Carleman and Korotkov operators on Banach spaces. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 207-218. (1981)
Herrmann Christian: A parameter for subdirectly irreducible modular lattices with four generators. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 169-179. (1981)
Hué Tran Trong; Szász Ferenc Andor: On the radical classes determinded by regularities. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 131-139. (1981)
Komornik Vilmos: On the Korovkin closure. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 41-43. (1981)
Krein Mark Grigor'evič; Langer Heinz: Some propositions on analytic matrix functions related to the theory of operators in the space Πx. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 181-205. (1981)
Krisztin Tibor: On the convergence of solutions of functional differential equations. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 45-54. (1981)
Kérchy László: On the commutant of C11-contractions. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 15-26. (1981)
Leindler László: Imbedding theorems and strong approximation. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 55-64. (1981)
Lopez Antonio M.: A Rees matrix semigroup over a semigroup and its maximal right quotient semigroup. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 65-70. (1981)
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Mitsch Heinz: Derivations on l-semigroups and formal languages. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 91-104. (1981)
Petz Dénes: On center-valued states of von Neumann algebras. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 219-228. (1981)
Quinkert R.: Korrektur und Ergänzung zu meiner Arbeit "Über Schreiersche Gruppenerweiterungen und ihre Kommutatorgruppen". In: Acta scientiarum mathematicarum, (43) 1-2. pp. 105-106. (1981)
Rakowski Zbigniew Markus: A characterization of compactness. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 107-108. (1981)
Rogers Donald D.; Ward Joseph D.: Cp-minimal positive approximants. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 109-115. (1981)
Schmidt Eligius Tamás: The ideal lattice of a distributive lattice with 0 is the congruence lattice of a lattice. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 153-168. (1981)
Singh Raj Kishor; Gupta Dharmendra K.; Kumar Ashok: Compact and Hilbert-Schmidt composition operators on weighted sequence spaces. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 117-122. (1981)
Takahashi Katsutoshi: On the converse of the Fuglede-Putnam theorem. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 123-125. (1981)
Tandori Károly: Beitrag zur Konvergenz der Orthogonalreihen. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 127-130. (1981)
Watanabe Seiji: The boundedness of closed linear maps in C*-algebras. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 37-39. (1981)
Yamashita Shinji: The hyperbolic M. Riesz theorem. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 141-146. (1981)
Young Nicholas John: A maximum principle for interpolation in H∞. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 147-152. (1981)
Bibliographie. In: Acta scientiarum mathematicarum, (43) 3-4. pp. 389-393. (1981)
Barría José; Bruzual Ramón: On approximation by unitary operators. In: Acta scientiarum mathematicarum, (43) 3-4. pp. 239-242. (1981)
Bercovici Hari: Functional models and extended spectral dominance. In: Acta scientiarum mathematicarum, (43) 3-4. pp. 243-254. (1981)
Birkenhead Ralph; Sauer Norbert W.; Stone Michael G.: The algebraic representation of semigroups and lattices; representing lattice extensions. In: Acta scientiarum mathematicarum, (43) 3-4. pp. 255-261. (1981)
Brodskij S. D.; Kogalovskij S. R.: Zamečaniâ o mnogoobraziâh algebraičeskih sistem. In: Acta scientiarum mathematicarum, (43) 3-4. pp. 263-266. (1981)
Czédli Gábor: A Mal'cev type condition for the semi-distributivity of congruence lattices. In: Acta scientiarum mathematicarum, (43) 3-4. pp. 267-272. (1981)
Foiaş Ciprian; Pearcy Carl M.; Szőkefalvi-Nagy Béla: Contractions with spectral radius one and invariant subspaces. In: Acta scientiarum mathematicarum, (43) 3-4. pp. 273-280. (1981)
Khazal Reyadh R.: Classes of universal algebras, their non-factors and periodic rings. In: Acta scientiarum mathematicarum, (43) 3-4. pp. 295-299. (1981)
Kérchy László: On invariant subspace lattices of C11-contractions. In: Acta scientiarum mathematicarum, (43) 3-4. pp. 281-293. (1981)
Leindler László: Strong approximation and generalized Zygmund class. In: Acta scientiarum mathematicarum, (43) 3-4. pp. 301-309. (1981)
Leindler László; Schwinn Hans: Über die absolute Summierbarkeit der Orthogonalreihen. In: Acta scientiarum mathematicarum, (43) 3-4. pp. 311-319. (1981)
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Tóth Gábor: Fibrations of compact Riemannian manifolds. In: Acta scientiarum mathematicarum, (43) 3-4. pp. 369-381. (1981)
Zlatoš Pavo: A Mal'cev condition for compact congruences to be principal. In: Acta scientiarum mathematicarum, (43) 3-4. pp. 383-387. (1981)