Balanced projective and cobalanced injective torsion free groups of finite rank C. VinsonhalerW. Wickless OriginalPaper Pages: 217 - 225
A note on the nilradicalN of a ringR and a subdirect sum representation of the ringR/N V. Perić OriginalPaper Pages: 233 - 237
Punktweise Abschätzungen zur Approximation durch algebraische Polynome H. GonskaE. Hinnemann OriginalPaper Pages: 243 - 254
Estimation of the Green function of the singular Schrödinger operator I. Joó OriginalPaper Pages: 275 - 284
(L 1,H)-type estimations for some operators with respect to the Walsh—Paley system P. Simon OriginalPaper Pages: 307 - 310
Any four independent edges of a 4-connected graph are contained in a circuit Péter L. ErdősE. Győri BriefCommunication Pages: 311 - 313