Conference in Honor of Andras Hajnal's 80th Birthday: Infinite and finite sets

June 13 - 17, 2011
Rényi Institute, Budapest, Hungary

Organizers:

István Juhász (chair), Alfréd Rényi Institute of Mathematics, juhasz at renyi.hu

Gyula Katona (co-chair), Alfréd Rényi Institute of Mathematics, ohkatona at renyi.hu

Péter Komjáth (co-chair), Eotvos University

Péter Csorba, Alfréd Rényi Institute of Mathematics, csp at renyi.hu

Ervin Gyori, Alfréd Rényi Institute of Mathematic, gyori at renyi.hu

Gábor Sági (secretary), Alfréd Rényi Institute of Mathematic, sagi at renyi.hu

Lajos Soukup, Alfréd Rényi Institute of Mathematic, soukup at renyi.hu

Workshop Program:

Monday, June 13, 2011 

 9:00 - 10:00  Registration 

10:00 - 10:30  Opening - coffee break

11:00 - 11:50  The large finite and the infinite 
               László Lovász 

12:00 - 12:50  Classifying Ergodic Measure Preserving Transformations
               Matthew Foreman

12:50 - 14:30  lunch break

14:30 - 15:20  Stationary reflection and two cardinal tree properties
               Boban Velickovic 

15:30 - 15:50  Clopen graphs and their finite induced subgraphs 
               Stefan Geschke	

16:00 - 16:20  Universal minimal flows for groups of automorphisms of homogeneous relational structures 
               Dana Bartosová	

16:20 - 17:00  coffee break

17:00 - 17:20  Asymmetric partition relations in the countably infinite case 
               Thilo Weinert

17:30 - 17:50  On certain finite graphs without large complete and empty subgraphs which are universal 
               Gábor Sági


Tuesday, June 14, 2011 

 9:00 -  9:50  Step up, here come Erdos and Hajnal! 
               János Pach	

10:00 - 10:50  The diameter of symmetric groups  
               Ákos Seress

10:50 - 11:30  coffee break

11:30 - 11:50  On the chromatic generalization of the Erdos-Szekeres problem with various numbers of internal points 
               Vitaliy Koshelev	

12:00 - 12:20  On dividing sets into parts of smaller diameters
               Andrei M. Raigorodskii 
	
12:30 - 12:50  On densest sets avoiding unit distance in spaces of small dimension 
               Mariya V. Titova	

12:50 - 14:30  lunch break

14:30 - 15:20  Menachem Magidor - tba 

15:30 - 16:20  A combinatorial analysis of the uncoditional basic sequence problem 	
 	       Stevo Todorcevic

16:20 - 17:00  coffee break

17:00 - 17:20  Some cardinal invariants related to analytic quotients
               Jana Flasková	

17:30 - 17:50  Thin coideals
               Igor Protasov	

18:00 - 18:20  Canonization theorems on Ramsey spaces and their application to the Tukey theory of ultrafilters 
               Natasha Dobrinen	

18:30 - 18:50  Quasi-selective and weakly Ramsey ultrafilters 
               Marco Forti 

19:00 - 21:00  wine and cheese party


Wednesday, June 15, 2011  

 9:00 -  9:50  Non-P-points and forcing 
               Saharon Shelah	

10:00 - 10:50  Menachem Kojman - tba 
              
10:50 - 11:30  coffee break

11:30 - 11:50  A generalization of Roitman's theorem for cardinal sequences 
               Juan Carlos Martínez	

12:00 - 12:20  Cardinal functions F?(X) and t?(X) for H-closed spaces
               Andrei Catalioto 

12:30 - 12:50  Measures on Bell space 
               Piotr Borodulin-Nadzieja 
	
12:50 - 14:30  lunch break

14:30 -	       social events (sightseeing) 
               more info at the registration desk 

Thursday, June 16, 2011  

 9:00 -  9:50  The Hajnal-Szemerédi theorem: extensions and variations 
               Alexandr Kostochka

10:00 - 10:50  Pósa's conjecture and related problems 
               Hal Kierstead	

10:50 - 11:30  coffee break

11:30 - 11:50  On Hajnal's triangle free game 
               Csaba Biró	

12:00 - 12:20  András Hajnal's "Clique Collection Lemma" revisited
               Vadim E. Levit 
	
12:30 - 12:50  The chromatic number of a normed space 
               Andrey B. Kupavskii	

12:50 - 14:30  lunch break

14:30 - 15:20  Universal ultrahomogeneous metric spaces
               Norbert Sauer	

15:30 - 16:20  Partitions and trees
               Jean Larson	

16:20 - 16:45  coffee break

16:45 - 17:05  History of infinity in set theory 
               Saeed Seyed Agha Banihashemi

17:10 - 17:30  Delta-open sets and mappings in topological spaces
               Raja Mohammad Latif 	

17:35 - 17:55  Some properties of multidimensional intersection matrices 
               Armenak Gasparyan	

18:00 - 18:20  Hypertournaments-scores and losing scores 
               Shariefuddin Pirzada	

19:00 	       banquet

Friday, June 17, 2011 

 9:00 -  9:50  Combinatorics and large cardinals
               Sy-David Friedman	

10:00 - 10:20  On hypergraph cliques with chromatic number 3
               Danila D. Cherkashin	

10:30 - 10:50  On Schur's theorem on arithmetic progressions
               Anastasia Rozovskaya	

10:50 - 11:30  coffee break

11:30 - 11:50  On the Erdos-Hajnal problem in the case of three colors
               Dmitry A. Shabanov

12:00 - 12:20  On zero-one laws for random graphs 
               Maksim E. Zhukovskii

12:30 - 12:50  On connectivity of random distance graphs of special type
               Andrey R. Yarmukhametov	
 
12:50 - 14:30  lunch break

14:30 - 14:50  Borel conjecture and dual Borel conjecture (and other variants of the Borel conjecture)
               Wolfgang Wohofsky

15:00 - 15:20  Forcing related convergences of sequences on complete Boolean algebras
               Aleksandar Pavlovic	

15:30 - 15:50  A game on Boolean algebras
               Boris Sobot 

15:50 - 16:30  coffee break

16:30 - 17:20  Long arithmetic progressions in sumsets
               Endre Szemerédi

17:30 - 18:20  Rainbow colourings
               Lajos Soukup	

Previous: Participation

Workshop Index

DIMACS Homepage