| Name | Affiliation | period |
| Mourad Abouzaid | Laboratorio A2X, Université Bordeaux 1 |
19 June 2005
- 1 July 2005 |
| Andreas Bender | Korea Institute of Advanced Study |
26 May 2005
- 31 May 2005 |
| Enrico Bombieri | Institute for Advanced Study, Princeton |
1 April 2005
- 31 July 2005 |
| Guillaume Bordes | Université Bordeaux 1 |
19 June 2005
- 3 July 2005 |
| Tim Browning | Oxford University |
18 May 2005
- 8 June 2005 |
| Jung Kyu Canci | Università degli Studi di Udine |
19 June 2005
- 25 June 2005 |
| Maria Carrizosa | Institut de Mathematiques de Jussieu |
5 June 2005
- 19 June 2005 |
| Emmanuel Delsinne | Université de Caen |
8 May 2005
- 22 May 2005 |
| Andrea Ferretti | Università di Roma 'La Sapienza' |
19 April 2005
- 22 April 2005 |
| Aurélien Galateau | Université Pierre et Marie Curie |
1 June 2005
- 30 June 2005 |
| Raphael Jones | University of Wisconsin |
20 June 2005
- 3 July 2005 |
| Omar Kihel | Dept of Mathematics, Brock University, Ontario, Canada |
27 June 2005
- 3 July 2005 |
| Ignazio Longhi | Universita' di Milano |
25 April 2005
- 30 April 2005 |
| Carlo Eugenio Magagna | Università di Udine |
12 June 2005
- 19 June 2005 3 July 2005 - 29 July 2005 |
| Fabien Mehdi Pazuki | Institut Mathématiques de Jussieu Paris 7 |
16 May 2005
- 27 May 2005 |
| Federico Pellarin | Universita' di Caen, Francia |
23 May 2005
- 27 May 2005 |
| Marco Pellegrini | Dipartimento di Matematica, Università di Pisa | |
| Corentin Pontreau | Université de Caen |
8 May 2005
- 22 May 2005 |
| Nicolas Ratazzi | Universite Paris 7 |
19 June 2005
- 2 July 2005 |
| Ottavio Rizzo | Università di Milano |
20 June 2005
- 21 June 2005 |
| Katherine Stange | Brown University |
19 June 2005
- 3 July 2005 |
| Andrea Surroca | ETH Zurich | |
| Andrei Yafaev | University College London |
11 April 2005
- 2 May 2005 |
| Umberto Zannier | Scuola Normale Superiore |
1 April 2005
- 31 July 2005 |