46TH INTERNATIONAL SYMPOSIUM ON FUNCTIONAL EQUATIONS

WHEN: JUNE 22-29, 2008
WHERE: Opava, Czech Republic


Breakfasts are served at 7:00-9:00 every day in the Hotel Belaria.

The talks of the participating speakers will be assigned to their time slots upon the upcoming decision of the scientific committee.

Sunday, June 22
Afternoon and evening
12:00Local Registration in the Hotel Belaria
19:00Dinner


Monday, June 23
 8:45- 9:00 Opening Ceremony
1st Morning Session
Chair: Zsolt PÁLES
 9:00- 9:25 Jens SCHWAIGER: Composition of generalized polynomial and multi-Jensen functions
 9:25- 9:50 Tom DAVISON: D'Alembert's functional equation on topological monoids
 9:50- 10:15 Antal JÁRAI: Regularity properties
 10:15-10:45 Coffee Break

2nd Morning Session
Chair: Detlef GRONAU
 10:45- 11:10 Kazimierz NIKODEM: On single-valuedness of convex-type multifunctions
 11:10- 11:35 Szymon WˇSOWICZ: Support-type properties of generalized convex functions
 11:35- 12:00 Jacek CHMIELIŃSKI: Orthogonality preserving mappings in normed spaces
 12:30 Lunch

1st Afternoon Session
Chair: Karol BARON
 15:30- 15:55 Roman GER: Additivity and exponentiality are alien each to the other
 15:55- 16:20 Janusz BRZDĘK: On stability of a conditional generalization of the Golab-Schinzel functional equation
 16:20- 16:45 Janusz MATKOWSKI: Invariance of means with two generators with respect to some one generator means
 16:45-17:15 Coffee Break

2nd Afternoon Session
Chair: Tom DAVISON
 17:15- 17:40 Moshe GOLDBERG: A variant of the spectral radius formula
 17:40- 18:05 Wolfgang FÖRG-ROB: A functional equation arising from measuring brightness of light
 18:05- 18:30 Problems & Remarks
 19:00 Dinner



Tuesday, June 24
1st Morning Session
Chair: Antal JÁRAI
 9:00- 9:25 Gyula MAKSA: Recent results on the stability of a functional equation of information theory
 9:25- 9:50 Attila GILÁNYI: Stability of a functional equation on square-symmetric groupoids
 9:50- 10:15 Attila HÁZY: On the stability of t-convexity
 10:15-10:45 Coffee Break

2nd Morning Session
Chair: Jens SCHWAIGER
 10:45- 11:10 Wojciech JABŁOŃSKI: Stability of Pexiderized homogeneity almost everywhere
 11:10- 11:35 Barbara PRZEBIERACZ: The stability of the translation equation
 11:35- 12:00 Tomasz KOCHANEK: Stability aspects of arithmetic functions
 12:30 Lunch

1st Afternoon Session
Chair: Kazimierz NIKODEM
 15:30- 15:55 Zsolt PÁLES: A generalization of the Bernstein-Doetsch Theorem
 15:55- 16:20 Józef TABOR: Generalized approximate convexity
 16:20- 16:45 Mihály BESSENYEI: Support theorems for generalized convex functions
 16:45-17:15 Coffee Break

2nd Afternoon Session
Chair: Janusz MATKOWSKI
 17:15- 17:40 Zoltán DARÓCZY: Mean values and functional equations
 17:40- 18:05 Justyna JARCZYK: On an equation involving weighted quasi-arithmetic means with continuous generators
 18:05- 18:30 Problems & Remarks
 19:00 Dinner



Wednesday, June 25

Trip to the city Kroměříľ, visit the castle. (www.mesto-kromeriz.cz)
  19:00 Dinner



Thursday, June 26
Morning: Special Session 9:00

Functional Equations stemming from Probability Theory

Chaired by: Witold JARCZYK & Károly LAJKÓ

Among speakers:
Karol BARON, Károly LAJKÓ, Fruzsina MÉSZÁROS, Jolanta MISIEWICZ, Janusz MORAWIEC, Jacek WESOŁOWSKI

      
   12:30 Lunch

1st Afternoon Session
Chair: Nicole BRILLOUËT-BELLUOT
 13:30- 13:55 Justyna SIKORSKA: Conditional functional equations and their stabilities on some prescribed sets
 13:55- 14:20 Bogdan BATKO: On questions related with superstability of some conditional Cauchy equations
 14:20- 14:45 Zoltán BOROS: Conditional inequalities for additive functions
 14:45-15:15 Coffee Break

2nd Afternoon Session
Chair: Gian Luigi FORTI
 15:15- 15:40 Henrik STETKÆR: d'Alembert's equation and representations
 15:40- 16:05 Dilian YANG: A generalized long Wilson-type functional equation on compact groups
 16:05- 16:30 Roman BADORA: On vector-valued invariant means
 16:30- 16:55 Problems & Remarks
 17:00 Dinner
 18:10 Depart for Theatre (Theatre programme)



Friday, June 27
1st Morning Session
Chair: Marek Cezary ZDUN
 9:00- 9:25 Ludwig REICH: On local analytic solutions of generalized Dhombres functional equations
 9:25- 9:50 Peter KAHLIG: On a functional equation of reversibility
 9:50- 10:15 Dorota KRASSOWSKA: On the embeddability of commuting continuous injections in an iteration semigroup
 10:15-10:45 Coffee Break

2nd Morning Session
Chair: Moshe GOLDBERG
 10:45- 11:10 Marek Cezary ZDUN: On multi-valued iteration groups generated by commuting functions
 11:10- 11:35 Witold JARCZYK: Iterative roots of mappings with a unique set-value point
 11:35- 12:00 Zbigniew LE¦NIAK: On Kaplan decompositions for a flow of free mappings
 12:30 Lunch

1st Afternoon Session
Chair: Józef TABOR
 15:30- 15:55 László SZÉKELYHIDI: Functional equations on hypergroups
 15:55- 16:20 Boris PANEAH: Identifying functions determining by linear functional operators
 16:20- 16:45 Pál BURAI: Additive operators satisfying further identities
 16:45-17:15 Coffee Break

2nd Afternoon Session
Chair: Maciej SABLIK
 17:15- 17:40 Fulvia SKOF: About an exponential-quadratic functional equation.
 17:40- 18:05 Valeriy FAYZIEV: Solution of alternative Cauchy equation on some semigroups where the Cauchy equation is not stable
 18:05- 18:30 Problems & Remarks
 19:00 Symposium Banquet



Saturday, June 28
1st Morning Session
Chair: Gyula MAKSA
 9:00- 9:25 Jacek CHUDZIAK: On a functional equation originating from some kind of shift-invariance
 9:25- 9:50 Imre KOCSIS: On a bisymmetry equation arising in utility theory
 9:50- 10:15 Wolfgang PRAGER: On solutions of the inhomogeneous Cauchy-equation
 10:15-10:45 Coffee Break

2nd Morning Session
Chair: László SZÉKELYHIDI
 10:45- 11:10 Barbara KOCLĘGA-KULPA: On a functional equation connected to Gauss quadrature rule
 11:10- 11:35 Tomasz SZOSTOK: On the stability of the equation stemming from Lagrange MVT
 11:35- 12:00 Wlodzimierz FECHNER: A functional characterization of two inequalities between means
 12:30 Lunch

1st Afternoon Session
Chair: Janusz BRZDĘK
 15:30- 15:55 Zygfryd KOMINEK: Remarks on stability of some quadratic equations
 15:55- 16:20 Maciej SABLIK: A remark on homogeneous means
 16:20- 16:45 Problems & Remarks
 16:45- 17:45 General Meeting
 17:45-18:15 Coffee Break
 17:15-18:35 Closing
19:00 Dinner



Sunday, June 29
Departures