3WFTop Second Announcement THIRD WORKSHOP ON FORMAL TOPOLOGY (3WFTop) Padua (Italy) 7-8 May 2007 tutorials (Dept. of Math.) 9-12 May 2007 workshop (Accademia Galileiana) 13 May 2007 social excursion (for those who stay) See the web site http://www.3wftop.math.unipd.it/ for news on: - submission of papers (deadline March 15) - registration (early registration before March 31; note that there are some grants for students and young researchers) - program (preliminary version) - accommodation - social program (see also a photographic tour of Padua) A copy of the the first announcement follows: This is the third of a series of successful meetings on the development of Formal Topology and its connections with related approaches. The first two have been held in Padua, 1997, and Venice, 2002. For more information on 3WFTop see http://www.3wftop.math.unipd.it/ What is formal topology When topology is developed in a strictly constructive way, for instance over Martin-Loef's type theory, points cannot be given primitively and the pointfree approach is fundamental. This is the reason why it is called formal. Formal topology has now become an important tool in constructive mathematics. More on formal topology: http://www.3wftop.math.unipd.it/formal-topology.html Invited speakers Invited speakers include Andre' Joyal, Per Martin-Loef and many other prominent scholars: http://www.3wftop.math.unipd.it/invited-speakers.html Tutorials Before the workshop, two days of extensive and coordinated tutorials are planned, given by Bernhard Banaschewski and other pioneers: http://www.3wftop.math.unipd.it/tutorials.html Contacts If you wish to be kept updated with information about 3WFTop, please send an e-mail to: fortop@math.lmu.de with KEEP ME UPDATED in the subject. The Scientific Committee Thierry Coquand Giovanni Sambin Peter Schuster