Date of Birth: February 10, 1936
Grünwald Prize awarded by the János
Bolyai Soc. (1958)
Mathematical Prize awarded by Hungarian Academy of Sci. (1974)
József Nádor prize awarded by the Technical Univ. of Budapest (1999)
Honorary member of the Alfréd Rényi Institute (2001-)
Széchenyi Professorial Scholarship (1999-2002)
Farkas Bolyai Prize awarded by Hungarian Academy of Sci. (2004)
Albert Szent-Györgyi Prize awarded by Ministery of Education (2006)
Béla Szőkefalvi-Nagy Medal awarded by the Bolyai Institute, University of Szeged (2008). The medal: pdf
Editorial Bords:Studia Sci. Math. Hungar. (1971-1992)
Visiting professorships Aboard:Martin Luther Universität, Halle GDR (1965-1968)
The most important results:
1. Congruence lattices of universal algebras 
Every algebraic lattice is isomrphic to the congruence lattice of a universal algera
2. Congruence lattices of lattices , ( see also ,)
The ideal lattice of a distributive lattice with zero is the congruence lattice of a lattice.
3. congruence lattices of (complemented ) modular lattices  ,,
Every finite lattice L is the congruence lattice of a complemented modular lattice.
4. The lattice of complete congruences of a complete lattice :
Every complete lattice K can be represented as the lattice of complete congruences
of a complete distributive lattiece L.
5. congruence-preserving and congruence-isomrphic extensions  , , 
Every finite lattice has a congruence-preserving extension to a 1. regular lattice,
2 complemented lattice, 3 semimodular lattice.
6. semimodular lattices , 
Every finite 2-dimensional semimodular lattice is the patchwork of patch lattices
(Conjecture: Every finite semimodular lattice is the patchwork of patch lattices).
Married Judit, I have two sons, Gábor (1964-2009) and George (1967)
my grandchildren, december 2012
Golden wedding, 02.07.20011
Oberwolfach, 1961 with Garett Birkhoff Brno, 1963 with László Fuchs
with Manfred Stern and András Huhn
With Gábor Czédli, 2008 Szeged