Publisher's Synopsis
To celebrate the sixtieth birthdays of Vera T. Sos and Andras Hajnal, the Janos Bolyai Mathematical Society organized a conference and this book. It reflects the broad interests and far-reaching impact of the work of these two mathematicians. The central topic is combinatorics, but papers cover set theory and number theory as well.;In order to guarantee the highest possible scientific standard, the following experts were invited to organise sessions: B. Bollobas (extremal graph theory), R.L. Graham (Ramsey theory), E. Milner (set theory), H. Niederreiter (number theory), A. Schrijver (combinatorial optimization), J. Spencer (probabilistic methods in combinatorics) and E. Szemeredi (theory of computing).
