The Issue 7 of Volume 21 of the International Journal of Algebra and Computation has been dedicated to the conference.

This conference aims to present to the participants the state of the art in algebraic theory of semigroups and its connections to related fields, namely group theory and theoretical computer science. It will be held in Porto, Portugal, on July 6-11, 2009, at the Faculty of Sciences of the University of Porto.

Invited speakers


Contributed talks

The conference will include contributed talks of 20 minutes. Candidates must send an extended abstract to until March 31, using the LaTex template file available here. It should provide sufficient information for the committee (helped by anonymous referees) to make a decision about the acceptance.  The decision will be communicated until April 30.

Registration and accommodation

Registration and accommodation is treated here:
Registration fee Until May 15 After May 15
Normal 120 EUR 150 EUR
Student 90 EUR 120 EUR

There are some rooms available at a University Residence (link here). Those interested in reserving a room, please contact the Organizing Committee using the e-mail

Informations and Map

Airport of Porto web page:
Transports from the Airport to the City, with detailed informations about taxis and the tramway:

The tramway ( takes about 25 min to arrive at station Casa da Música, signalized in the map below, and not faraway (about 15 min by walk) from almost all hotels signalized in the map. All tramways leaving the airport go to station Casa da Música, but when returning to the airport, be careful to choose the one with direction Aeroporto.

Two web pages with weather informations:
You can download here a text file with an e-mail message sent to the participants with several useful informations, including some appearing in this web page.

Click here to see it in Google maps and to obtain more information.

Financial support

It may be possible to finance the local expenses of a limited number of post-graduate students. To apply for such support, send to your C.V. and ask your Ph.D. advisor to send a recommendation letter to the same e-mail address, until April 23. 


Poster     Click here to download the conference poster.

Organizing Committee

  • Alfredo Costa (University of Coimbra, CMUC)
  • Manuel Delgado (University of Porto, CMUP)
  • Vítor Hugo Fernandes (New University of Lisbon, CAUL)
  • Gracinda Gomes (University of Lisbon, CAUL)
  • Manuel Jesus (New University of Lisbon, CAUL)


This conference is organized within the activities of the FCT research projects "Automata, Semigroups and Applications" (PTDC/MAT/65481/2006) and "Semigroups and Languages" (PTDC/MAT/69514/2006). 
It is supported by the following research centers:
  • CAUL (Centro de Álgebra da Universidade de Lisboa)
  • CMUC (Centro de Matemática da Universidade de Coimbra)
  • CMUP (Centro de Matemática da Universidade do Porto)

    With the support of the Fundação para a Ciência e a Tecnologia.


    With the support of the Luso-American Development Foundation.