The preliminary program of the workshop is as follows:

Monday, 19th
Day of arrival. Registration and welcome at the Renyi Institute between 15.00-16.00 (those arriving later can register and get their welcome package during the workshop)

Tuesday, 20th

10.00-11.00 P. Jaming: A survey on the uncertainty principle

11.00-11.30 Coffee break

11.30-12.30 Gy. Gát: Maximal convergence spaces of some operators related to the Fourier series of two-variable functions on the Walsh group

12.30-14.30 Lunch

14.30-15.00 M. Deykalova: The Taikov problem for algebraic polynomials on a multidimensional sphere

15.00-15.30 R. Toledo: Negative results concerning Fourier series on the complete product of S_3

15.30-16.00 K. Nagy: Convergence properties of the Marczinkiewicz-Fejér means with respect to the Walsh-Kaczmarz system

18.00 Conference dinner

Wednesday, 21st

10.00-11.00 K. Böröczky: An ideal density for hyperbolic packings

11.00-11.30 Coffee break

11.30-12.30 A. Babenko: The Delsarte problem and related extremal problems of approximation theory and combinatorial geometry

12.30-14.30 Lunch

14.30-15.00 M. Matolcsi: The minimality problem of positive realizations of transfer functions

15.00-15.30 I. Blahota: Some approximation properties of Nörlund logarithmic means on Vilenkin groups

Thursady, 22nd

10.00-11.00 M.N. Kolountzakis: TBA

11.00-11.30 Coffee break

11.30-12.30 K. Kazarian: TBA

Afternoon: excursion to Visegrad

Friday, 23rd

10.00-11.00 V. Ivanov: Some extremal problems for periodic positive definite functions

11.00-11.30 Coffee break

11.30-12.30 I. Ruzsa: 2 is not quite 3

12.30-14.30 Lunch

14.30-15.30 Berdysheva: On Turán's problem for l_1 radial positive definite functions

Saturday, 24th

10.00-11.00 V. Arestov: The Jackson inequality for the best mean-square approximations by entire functions of given exponential type and other extremal problems for positive definite functions

11.00-11.30 Coffee break

11.30-12.00 M. Papp: Malquist-Takenaka systems and equilibrium conditions

12.00-12.30 S. Vasilyev: Jackson inequality between the value of the best approximation of a periodic function and its modulus of continuity.

12.30-14.30 Lunch

Some further possible cultural programs in Budapest:

Wednesday, 21st, 16-18 Sightseeing tour in Budapest (4500 HUF/person)

Wednesday, 21st, 19.30: Concert at 'Zeneakadémia' by the 'Liszt Ferenc Kamarazenekar' (Bach, Beethoven, Chaikovsky, Vivaldi)

Friday, 23rd, 19.30: Concert at 'Művészetek Palotája' by the 'Nemzeti Filharmonikusok' (Bartók)

Saturday, 24th, afternoon: A walk in the Castle area, with a concert in Matthias church at 20.00.