SZTAKI Közlemények 29. (1983)
CONTENT Page Perfecto DIPOTET: Information system for planning a research program .......................... 7 L. GARCIA - M. KATRIB - E. QUESAGA: A QUERY system for a relational database system ................ 21 V. GORLOV and D. LAU: Congruences on closed sets of self-dual functions in many-valued logics and on closed sets of linear functions in prime valued logics ................................ 31 Hoang KIEM, Ho Tu BAO: About the equivalence and stability of heuristic algorithm of pattern-recognition with application ................. 41 Bak Hing KHANG - Hoang KIEM: Pattern-recognition algorithms in hypercomplex space .............. 59 István SZÁLKÁI: The algebraic structure of primitive recursive functions ........................... 75 Elmira Morin TEJADO : Planning perennial crop production in agricultural investment projects ............ 9 3 Béla UHRIN: Minkowski's convex body theorem and the measure of covering Rn by a set ............... 115