The Workshop will be held in Cortona (Tuscany) from 11 September until 16 September 2005; it will take place in the Palazzone, a villa which belongs to the Scuola Normale Superiore of Pisa. The Meeting is supported by the Istituto Nazionale di Alta Matematica, an Italian Institution that promotes advanced studies in Mathematics. The scientific organizers are Professor E G Virga and Dr A M Sonnet, the local organizer is Dr F Bisi. Two discussion sessions are being organized within the Workshop, where spontaneous contributions could be hosted. Though no registration fee will be applied, participants are kindly requested to register by email.

Contact Addresses: Prof Epifanio G Virga  Università di Pavia  Dipartimento di Matematica  via Ferrata 1  I-27100 Pavia  Email: virga@dragon.imati.cnr.it Dr André M Sonnet Department of Mathematics University of Strathclyde 26 Richmond Street Glasgow G1 1XH, UK Email: ams@maths.strath.ac.uk Dr Fulvio Bisi Università di Pavia  Dipartimento di Matematica  via Ferrata 1  I-27100 Pavia  Email: bisi@dimat.unipv.it