Studia Scientiarium Mathematicarum Hungarica 15. (1980)
STUDIA SCIENTIARUM MATHEMATICARUM HUNGARICA A QUARTERLY OF THE HUNGARIAN ACADEMY OF SCIENCES Studia Scientiarum Mathematicarum Hungarica publishes original papers on mathematics mainly in English, but also in German, French and Russian. Studia Scientiarum Mathematicarum Hungarica is published in yearly volumes of four issues (mostly double numbers published semiannually) by AKADÉMIAI KIADÓ Publishing House of the Hungarian Academy of Sciences H-1054 Budapest, Alkotmány u. 21. Manuscripts and editorial correspondence should be addressed to J. Merza Managing Editor H-1053 Budapest, Reáltanoda u. 13—15 Subscription information Orders should be addressed to KULTURA Foreign Trading Company H-1389 Budapest, P. O. Box 149 or to its representatives abroad.