PRELIMINARY SCIENTIFIC PROGRAM: (plain text format)

 Monday  July 5

|  9.00- 9.30 | Opening: Vera T. S\'os, Aryeh Dvoretzky, L\'aszl\'o Lov\'asz
|  9.30-10.30 | B\'ela Bollob\'as: From Prodigy to grand old man,  the mathematical journey of Paul Erd\H{o}s
| 11.00-12.00 | Noga Alon: \quad Colorful aspects of the probabilistic method

| 2.00-2.30 | Wirsing    | Szemer\'edi | Nesetril  | Hayman    | Lubotzky |
| 2.40-3.10 | Pintz      | Reed        | Faudree   | Shektman  | P\'alfy  |
| 3.20-3.50 | Heath-Brown| Mader       | Schelp    | Bojanov   | Cameron  |
| 4.20-4.50 | Maier      | Katona      | Pr\"omel  | Erd\'elyi | Pyber    |
| 5.00-5.30 | Stewart    | Gy\H{o}ri   | Kohayakawa| Szabados  | Shalev   |
| 5.40-6.10 | Hildebrand | Brown       | Sharir    | Mills |   |          |

                            Tuesday  July 6

|  9.00-10.00 | Peter Borwein: Paul Erd\H{o}s and his work on polynomials
| 10.30-11.30 | Imre Z. Ruzsa: Erd\H{o}s on addition of sequences

| 2.00-2.30 | Margulis   | Kostochka   | Kleitman  | Preiss       | Lov\'asz     |
| 2.40-3.10 | Katznelson | Gy\'arf\'as | Sz\'ekely | Laczkovich   | Elekes       |
| 3.20-3.50 | Schinzel   | Bondy       | Voss      | Totik        | Chazelle     |
| 4.20-4.50 | Gy\H{o}ry  | Toft        | Tuza      | Maharam Stone| B\'ar\'any   |
| 5.00-5.30 | Tichy      | Khachatrian | Sudakov   | Taylor       | Fejes T\'oth |

                Miniworkshop on Digital Expansion: Monday, Tuesday,
                 organized by R. Tichy, see the detailed program

                            Wednesday  July 7

|  9.00-10.00 | Spencer: Random Graphs, Sets and Tournaments
| 10.30-11.30 | Doron Lubinsky: Erd\H{o}s on interpolation and orthogonal polynomials
| 12.00-13.00 | Peter D.T.A. Elliott: ``Cast thy bread upon the waters...", a personal view \dots

                            Afternoon: Excursion

                            Thursday  July 8

|  9.00-10.00 | Ron L. Graham: Paul Erd\H{o}s and Ramsey theory
| 10.30-11.30 | Mikl\'os Simonovits: Extremal Graph Theory
| 12.00-13.00 | Andr\'as Hajnal: Paul Erd\H{o}s' set theory

| 2.30-3.00 | Bergelson     | Karonski    | Sauer       | Foreman     | Welzl  |
| 3.10-3.40 | F\"urstenberg | Luczak      | Trotter     | Bartoszynski| Pach   |
| 3.50-4.20 | Freiman       | H\"aggkvist | Brightwell  | M. E. Rudin | Tardos |
| 4.50-5.20 | Gowers        | Molloy      | Rosenstiehl | Kanamori    | Makai  |
| 5.30-6.00 | Tetali        | Ruci\'nski  |             | Laver       |        |

                            Friday  July 9

|  9.00-10.00 | Carl Pomerance: Paul Erd\H{o}s and special arithmetic functions
| 10.30-11.30 | P\'eter Komj\'ath: Infinite combinatorics

| 2.00-2.30 | Kubilius     | Frankl   | Linial   |  R\'ev\'esz | Kahane      |
| 2.40-3.10 | Manstavicius | F\"uredi | Pudl\'ak |  Lawler     | Korevaar    |
| 3.20-3.50 | Ivic         | Lefmann  | Tur\'an  |  Solomyak   | Mastroianni |
| 4.20-4.50 | K\'atai      | Aharoni  | Kalai    |  Philipp    | V\'ertesi   |
| 5.00-5.30 | Deshouillers | Holzman  | Valtr    |  B. T\'oth  | Elbert      |

                            Saturday  July 10

|  9.00- 9.30  | Nicolas   | Halberstam  | Thomason | Shelah     |      |
|  9.40-10.10  | Nathanson | Sch\"onheim | Griggs   | Jech       |      |
| 10.20-10.50  | Alladi    | Tijdeman    | K\"orner | Larson     |      |
| 11.20-11.50  | Mauduit   | Selfridge   | Simonyi  | Todorcevic |      |
| 12.00-12.30  | Komornik  | Ahlswede    | Enomoto  | Mitchell   |      |

| 12.45-13.30 | George Szekeres: An old comrade looks back (Esther's problem)

                           Closing

|  \multispan{11}During the plenary sessions there will be special
  contributions from

 Yousef Alavi, Alan Baker, \'Akos Cs\'asz\'ar, Richard K. Guy,  Arthur H. Stone