Vol. 19 No. 1-2 (1991)

A CLASS OF INVERSE SEMIGROUPS WITH BOOLEAN CONGRUENCE LATTICES

Karl Auinger

3-13
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ON OUTPUT BEHAVIOUR OF MEALY-AUTOMATA

I. BABCSÁNYI

15-21
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POISSON APPROXIMATION FOR INDEPENDENT BERNOULLI SUMMANDS USING THE SEMI-GROUP OPERATORS THEORY

A. R. CARRERA, M. MARTINEZ, J. M. GONZÁLEZ

23-31
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ON TWO CONJECTURES RELATED TO ADMISSIBLE GROUPS AND QUASIGROUPS

J. Dénes, A. D. Keedwell

33-35
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A QUASI-GROUP ASSOCIATED WITH THE WEB FORMED BY THREE PENCILS OF CIRCLES WHICH BELONG TO THE SAME BUNDLE

H. Î. ERDOĞAN

37-40
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ON THE CODING OF DIGITIZED PICTURES

Gábor Fazekas

41-47
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ITERATIVE DECOMPOSITION OF PERMUTATIONS

Z. Kokosinski

49-55
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MODULAR GROUP RINGS AND WREATH PRODUCTS OF GROUPS

P. LAKATOS

57-60
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REFLEXIVE UNITARY SUBSEMIGROUPS OF LEFT SIMPLE SEMIGROUPS

Attila Nagy

61-69
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MINIMAL CONGRUENCES ON AUTOMATA

R. H. Oehmke

71-77
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GROUP AND SEMIGROUP THEORETICAL PROBLEMS IN APPROXIMATION THEORY

K. Seitz

79-85
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LATTICES WITH O-DISTRIBUTIVE OR O-MODULAR REES FACTORS

G. Szász

87-89
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COMBINATORIAL PROBLEMS FOR ABELIAN GROUPS ARISING FROM GEOMETRY

T. Szőnyi

91-100
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COMPLETELY DISJUNCTIVE LANGUAGES

S. S. YU, S. W. JIANG, H. J. SHYR

101-110
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ON PARALLELISMS OF ODD DIMENSIONAL FINITE PROJECTIVE SPACES

F. WETTL

111-116
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