This volume contains invited papers and contributions delivered at the
International Conference on Hamiltonian Mechanics: Integrability and
Chaotic Behaviour, held in Tornn, Poland during the summer of 1993. The
conference was supported by the NATO Scientific and Environmental
Affairs Division as an Advanced Research Workshop. In fact, it was the
first scientific conference in all Eastern Europe supported by NATO. The
meeting was expected to establish contacts between East and West experts
as well as to study the current state of the art in the area of
Hamiltonian Mechanics and its applications. I am sure that the informal
atmosphere of the city of Torun, the birthplace of Nicolaus Copernicus,
stimulated many valuable scientific exchanges. The first idea for this
cnference was carried out by Prof Andrzej J. Maciejewski and myself,
more than two years ago, during his visit in Greece. It was planned for
about forty well-known scientists from East and West. At that time
participation of a scientist from Eastern Europe in an Organising
Committee of a NATO Conference was not allowed. But always there is the
first time. Our plans for such a "small" conference, as a first attempt
in the new European situation -the Europe without borders -quickly
passed away. The names of our invited speakers, authorities in their
field, were a magnet for many colleagues from all over the world.