
A conference on Dynamical Systems
Faculty of Mathematics and Computer Science, University of Lodz, June 26 - 28, 2023.
The organizers of the international conference "Dynamics of (Semi-)Group Actions"
warmly welcome all mathematicians interested in dynamics of (semi-)groups.
This would be the third edition, the first and second editions took place in 2019 and 2021 in Łódź (Poland).
The first aim of the conference is to bring together mathematicians involved in topological,
measurable and algebraic aspects of dynamical systems generated by (semi-)group actions.
The second aim is to explore research advances and to stimulate the exchange of new ideas.
In addition, the conference offers new opportunities for broadening scientific contacts.
Lectures start on Monday (June 26) morning and end on Wednesday (June 28) afternoon.
Conference poster
Program & Abstracts (in PDF version)
Monday, June 26th
8:30 - 9:50 REGISTRATION
9:50 - 10:00 OPENING
10:00 - 10:50 BENJAMIN WEISS, Some qualitative aspects of entropy
11:00 - 11:30 COFFEE BREAK
11:30 - 11:55 PAULO VARANDAS, On the thermodynamic formalism of (semi)group actions
12:00 - 12:25 GRZEGORZ GUZIK, Supports of evolution systems of measures for Markov semigroup
12:30 - 12:55 SEBASTIAN KOPACZ, Uniquely ergodic quasitilings of amenable groups
13:00 - 15:00 LUNCH
15:00 - 15:50 MARIA CARVALHO, Historic behavior within semigroup actions
16:00 - 16:30 COFFEE BREAK
16:30 - 16:55 RADU MUNTEANU, Inverse measure-theoretic entropy
17:00 - 17:25 MARIUSZ URBAŃSKI, Dimension spectrum for conformal Iterated Function Systems
Tuesday, June 27th
9:00 - 9:50 DONGKUI MA, Topological entropy, topological pressure of free semigroup actions for non-compact sets and some applications
10:00 - 10:50 EUGEN MIHAILESCU, Dynamics and dimension for a class of skew-product transformations
11:00 - 11:30 COFFEE BREAK
11:30 - 11:55 SERGEY BEZUGLYI, Endomorphisms of a measure space and representations of Cuntz relations
12:00 - 12:25 MATEUSZ WIĘCEK, Asymptotic pairs in topological actions of countable amenable groups
12:30 - 12:55 GRZEGORZ KLESZCZ, Asymptotic relation for set-valued processes
13:00 - 15:00 LUNCH
15:00 - 15:50 TUSHAR DAS, Dimension theory of conformal iterated function systems: old and new results and questions
19:00 - 22:00 BANQUET
Wednesday, June 28th
9:00 - 9:50 JOHANNES JAERISCH, Multifractal analysis for the geodesic flow on hyperbolic surfaces
10:00 - 10:50 UDAJAN DARJI, Odometers and solenoids
11:00 - 11:30 COFFEE BREAK
11:30 - 11:55 DOMINIK KWIETNIAK, Every Choquet simplex is the space of invariant probability measures of a minimal homeomorphism on a manifold
12:00 - 12:25 ANIMA NAGAR, On almost periodicity and minimality for semiflows
12:30 - 12:55 JAQUELINE SIQUEIRA, On ergodic theory of impulsive semiflows
13:00 - 15:00 LUNCH
15:00 - 15:50 GIULIO TIOZZO, The Poisson boundary of hyperbolic groups without moment conditions
16:00 - 16:30 COFFEE BREAK
16:30 - 16:55 OLENA KARPEL, Dynamics on the path space of generalized Bratteli diagrams
17:00 - 17:10 CLOSING
| 1 | Sergey | Bezuglyi | Iowa City | University of Iowa |
| 2 | Andrzej | Biś | Łódź | University of Lodz |
| 3 | Jozef | Bobok | Prague | Czech Technical University in Prague |
| 4 | Henk | Bruin | Vienna | University of Vienna |
| 5 | Zoltán | Buczolich | Budapest | ELTE Eötvös Loránd University |
| 6 | Maria | Carvalho | Porto | CMUP & Department of Mathematics, University of Porto |
| 7 | Udayan | Darji | Louisville | University of Louisville |
| 8 | Tushar | Das | La Crosse | University of Wisconsin - La Crosse |
| 9 | Dikran | Dikranyan | Udine | Udine University |
| 10 | Tomasz | Downarowicz | Wrocław | Wroclaw University of Science and Technology |
| 11 | Małgorzata | Filipczak | Łódź | Uniwersytet Łódzki |
| 12 | Magdalena | Foryś-Krawiec | Kraków | AGH University of Krakow |
| 13 | Bartosz | Frej | Wrocław | Wrocław University Of Science And Technology |
| 14 | Grzegorz | Guzik | Kraków | AGH University of Science and Technology |
| 15 | Grażyna | Horbaczewska | Łódź | University of Łódź |
| 16 | Roman | Hric | Banská Bystrica | Matej Bel University |
| 17 | Johannes | Jaerisch | Nagoya | Nagoya University |
| 18 | Olena | Karpel | Krakow | AGH University of Science and Technology |
| 19 | Grzegorz | Kleszcz | Kraków | AGH University of Krakow |
| 20 | Sebastian | Kopacz | Wrocław | Wrocław University of Science and Technology |
| 21 | Dominik | Kwietniak | Kraków | Jagiellonian University |
| 22 | Dongkui | Ma | Guangzhou | South China University of Technology |
| 23 | Agnieszka | Marczuk | Łódź | University of Lodz |
| 24 | Eugen | Mihailescu | Bucharest | Institute of Mathematics of the Romanian Academy |
| 25 | Michaela | Mihoková | Banská Bystrica | Matej Bel University |
| 26 | Radu | Munteanu | Bucharest | University of Bucharest |
| 27 | Anima | Nagar | New Delhi | Indian Institute of Technology Delhi |
| 28 | Ryszard | Pawlak | Łódź | Łódź University |
| 29 | Michał | Prusik | Wrocław | Wrocław University Of Science And Technology |
| 30 | Silvia | Radinger | Vienna | University of Vienna |
| 31 | Lenka | Rucka | Opava | Silesian University in Opava |
| 32 | Klaus | Schmidt | Vienna | University of Vienna |
| 33 | Jacek | Serafin | Wrocław | Wrocław University of Science and Technology |
| 34 | Jaqueline | Siqueira | Porto | Porto University & Federal University of Rio de Janeiro |
| 35 | Ľubomír | Snoha | Banská Bystrica | Matej Bel University |
| 36 | Michał | Strzelecki | Łódź | Lodz University of Technology |
| 37 | Hiroki | Sumi | Kyoto | Kyoto University |
| 38 | Giulio | Tiozzo | Toronto | University of Toronto |
| 39 | Mariusz | Urbanski | Denton | University of North Texas |
| 40 | Paulo | Varandas | Porto | FCT/CMUP-Portugal & UFBA-Brazil |
| 41 | Benjamin | Weiss | Jerusalem | Hebrew University of Jerusalem |
| 42 | Mateusz | Więcek | Wrocław | Wrocław University of Science and Technology |
Registration fees
The conference fee covers lunches and coffee breaks.
All the payments should be free of any additional charges for the receiver. The transfers should be directed to the following account of the University of Łódź:
Data of the bank account owner:
Uniwersytet Łódzki
ul. Narutowicza 68
90-136 Łódz
Bank data:
PKO SA (name of the bank)
II Oddział w Łodzi (branch of the bank)
ul. Piotrkowska 270 (street)
90-361 Łódź (city)
Bank account number:
IBAN: PL 14 1240 6292 1111 0011 2291 4057
SWIFT/BIC: PKOPPLPW
Please do not forget to indicate the name of the participant for whom the payment is made.
Accommodation
All the participants will be accommodated at the University of Łódź Training and Conference Center, ul. Kopcińskiego 16/18, Łódź, which is located 5 minutes walk from the conference venue.
The conference fee does not cover the cost of accommodation. This should be paid separately.
Prices (per night):
single room: 30 EUR (or 140 PLN).
The price includes breakfast.
If you would like to stay in a hotel in the city, please indicate this during the registration process and make the reservation by yourself.
How to get to Łódź
How to get to the UŁ Training and Conference Center:
How to get to the Faculty of Mathematics and Computer Scence:
The conference venue is located at the building of the Faculty of Mathematics and Computer Science, University of Łódź,
ul. Banacha 22.

Located in the center of Poland, Łódź is an important academic and cultural center.
Łódź named one of world’s top travel destinations by National Geographic.