Charles Morgan University College London, Great Britain Ramsey Theory 21 de Março de 2007 quarta-feira 12h Sala 5.4 I'll give an overview of some solved and unsolved problems in Ramsey theory - a part of mathematics whose focus is the relationship between order and disorder (or 'structure' and 'chaos'). I'll stress, particularly, the connections between Ramsey theory for the finite and for the uncountable. [The intention is that no more than a very basic knowledge of set theory (eg. knowing what a cardinal is) and combinatorics (what a graph is) will be assumed.]