ICM Operator Algebras Satellite Conference - ICMOA

6th Florianópolis-Münster-Ottawa meeting

July 26-30, 2018 in Florianópolis, Santa Catarina, Brazil

This is the 6th conference of a series of mettings that have been organized under cooperation with Florianópolis, Münster and Ottawa.

Here is the history of the first five conferences:
Fields Institute Extended Workshop on Groups and Group Actions in Operator Algebra Theory , University of Ottawa, 12-16 July, 2010.
2011 Brazilian Operator Algebras Symposium (BOAS 2011), Universidade Federal de Santa Catarina, Jurere, Florianópolis, SC, Brazil, January 31 - February 4, 2011.
SFB-Workshop on Groups, Dynamical Systems and C*-Algebras , Münster, August 20-24, 2013.
International Conference on Functional Analysis and Dynamical Systems (FADYS) , Praia dos Ingleses, Florianópolis, February 24-27, 2015.
Workshop on Dynamical Systems and Operator Algebras, May 30 to June 1, 2016, University of Ottawa

This conference is dedicated to the 60th birthday of Prof. Ruy Exel.


Happy Birthday Ruy! - Feliz Aniversário!

Subject of the conference

Operator Algebras originated in the work of von Neumann, in his search for a mathematical framework for quantum mechanics, and of Gelfand and Naimark. They are the noncommutative versions of measure theory, topology and differential geometry and have deep ties with operator theory, ergodic theory, harmonic analysis, representation theory and quantum physics. In recent years the connections with other fields have guaranteed to Operator Algebras a central role in Mathematics, as it is seen from the work of A. Connes in noncommutative geometry and V. Jones in polynomial invariants. One of the many ramifications of these developments is the fruitful interaction with Dynamical Systems. The deep connections between Ergodic Theory and von Neumann algebras, established in the 70's by A. Connes, W. Krieger, J. Feldman, C. Moore and others, has recently found its counterpart in equally deep connections linking Topological Dynamics and C*-algebras. For example, for the class of symbolic dynamical systems there exists a correspondence with the theory of C*-algebras (through the notion of crossed products and their K-theory groups). For Markov shifts, for example, the corresponding C*-algebra is the well known Cuntz-Krieger algebra and its K0-group is the known invariant introduced by Bowen and Franks in 1977. The theory of operator algebras is undoubtedly one of the domains in Mathematics most notable for the depth of its problems, the richness of its new ideas, its connections to so many different fields, and its great potential as a unifying language and source of illumination.

Conference Venue

The workshop will take place in Canasvieiras, in the Hotel Palace Praia, with whom with have negotiated special room prices as follows:

- Single room - R$ 203,00.
- Double room - R$ 246,50.
- Triple room - R$ 323,00.
- Quadruple: R$ 395,00.

Every participant should book his/her own room.
To do it, please send an email to reservas@palacepraia.com.br, informing that your are a participant of the Satellite ICMOA 2018.


We ask everyone to register. To register please download this text file, fill it out using your favourite text editor, save it as text (please avoid unnecessarily complicated editor formats) and e-mail it as an attachment to icm2018oasatellite@gmail.com. Alternatively you may copy and paste it directly on your mail editor and send it to us as the body of your message. In this case a "plain text" message is preferred over "rich formatting". The registration deadline is July 15, 2018. It is important to provide your date and time of arrival in the registration form. We will try to organize transfers from the airport.

Registration fees

There will be a registration fee of R$ 250 (aproximately 80 USD), payable upon arrival.
Registration fees should be paid in Reals (the local currency), either in cash or Brazilian checks. We are not prepared to deal with credit cards, foreign checks or foreign currency.


Confirmed Speakers:

Alexander Kumjian (Nevada)
Andreas Thom (Dresden)
Artur Lopes (UFRGS)
Benjamin Steinberg (New York / CUNY)
Charles Starling (Carleton)
Christopher Phillips (Oregon)
Dana Williams (Dartmouth)
Danie van Wyk (UFSC)
David Pitts (Lincoln)
Elizabeth Gillaspy (Montana)
Enrique Pardo (Cadiz)
Fernando Abadie (Montivideo)
George Elliott (Toronto)
Gilles Gonçalves de Castro (UFSC)
Ian F. Putnam (Victoria)
Ilijas Farah (York)
Jean Renault (Orleans)
Joachim Cuntz (Münster)
Kang Li (Warsaw / INPAN)
Karen Strung (Warsaw)
Kristin Courtney (Virginia)
Lisa Orloff Clark (Wellington)
Marcelo Laca (Victoria)
Maria Nørgård-Solano (Copenhagen)
Marc Rieffel (Berkeley)
Mercedes Siles Molina (Malaga)
Misha Dokuchaev (USP - Sao Paulo)
Pere Ara (Barcelona)
Ralf Meyer (Göttingen)
Rufus Willett (Honolulu, Hawaii)
Sarah Browne (Penn State)
Sarah Reznikoff (Kansas State)
Siegfried Echterhoff (Münster)
Soren Eilers (Copenhagen)
Thierry Giordano (Ottawa)
Vaughan Jones (Berkeley, Vanderbilt)
Wilhelm Winter (Münster)
Vladimir Pestov (UFSC/Ottawa)
Xin Li (London)
Zhuang Niu (Wyωing)

Schedule of Talks

Poster Session

We plan to organize a poster session in this conference. If you would like to contribute, please follow these instructions:

Instructions for submission of a poster

Registered participants

Additional Information

For more information, please send an email to icm2018oasatellite@gmail.com, or if you prefer, contact one of the

Local Organizers:


Alcides Buss (alcides.buss at ufsc dot br),
Daniel Gonçalves (daniel.goncalves at ufsc dot br),
Gilles Gonçalves de Castro (gilles.castro at ufsc dot br)
Giuliano Boava (g.boava at ufsc dot br)


Viviane Beuter (vivibeuter@gmail.com)

International Organizing Committee:

Thierry Giordano
Siegfried Echterhoff
Nathanial Brown

Scientific Committee:

Alcides Buss
Daniel Gonçalves
George Elliott
Joachim Cuntz
Marcelo Laca
Vaughan Jones


UFSC   uOttawa   WWU     WWU     WWU    

CAPES     FAPESC     NFS    


Practical Information


In order to check if you need a visa to enter Brazil, you may visit the Brazilian Consulate of your country.

Arriving in Florianópolis by plane

Even though Florianópolis is served by the "Hercilio Luz International Airport" (code FLN), very few international flights arrive directly in Florianópolis.
International passengers will most likely book a flight to Sao Paulo or Rio de Janeiro and then take a local connecting flight to Florianópolis.
The major airlines offering multiple daily flights from either Sao Paulo or Rio to Florianópolis are LATAM , and GOL .
Both Sao Paulo and Rio have more than one major airport. Please make sure your connecting flight leaves from the same airport your international flight arrives at.
Transferring between airports may be an unpleasant experience.

Once you have arrived at Florianópolis airport, the best way to reach Canasvieiras is by taxi, which takes approximately 40 minutes.
The taxi ride will cost approximately R$ 80.00.

More informations may be found here.
Drivers at this Coop accept most credit cards.
Should you anticipate any difficulty in your communication with the taxi driver, please be prepared to show him/her the following text:
"Por favor me leve ao hotel 'Hotel Palace Praia'. Endereço: Praça República do Líbano, 40, Praia de Canasvieiras."

We are organizing transfers from the airport to the hotel for all registred participants. for all registered participants (please keep in mind the 15th of July deadline). To offer this service we need you to fill your flight info in the registration form. Closer to the date we will send you the transfer contact info.

Exchanging currency

The currency in Brazil is called "Real" and it is denoted "R$". The uptated exchange rate can be seen here.
There is a currency exchange office at the main lobby of the airport in Florianópolis.
Merchants in Florianópolis are not used to accepting foreign currency. On the other hand credit cards are widely accepted throughout Brazil.


Winter temperature average in Florianópolis normaly ranges between 10-20.
CNN weather page for Florianópolis

Future announcements

If you want to receive further information as it becomes available, please send us an e-mail at icm2018oasatellite@gmail.com.
You may also want to check this page regularly as we plan to keep all of the relevant information available here.

Looking forward to seeing you in Florianópolis in July 2018!