Express/SOS 2026

Combined 33rd International Workshop on Expressiveness in Concurrency and 23rd Workshop on Structural Operational Semantics

Saturday, 5 September 2026

Liverpool, United Kingdom

Affiliated with CONFEST 2026

Important Dates

  • June 22, 2026 Paper Submission
  • July 20, 2026 Notification to authors
  • October 25, 2026 Final version due (Post-proceedings)

Proceedings

The workshop proceedings will be published in Electronic Proceedings in Theoretical Computer Science.

Submissions

We solicit two types of submissions:

  • Full papers: between 15 and 18 pages excluding references in EPTCS style (presented at the workshop and included in the proceedings). Only material that has not been submitted/published anywhere else is allowed.
  • Short papers of up to 5 pages excluding references in EPTCS style (presented at the workshop, but not included in the proceedings). We allow submissions of already published material.

Submission is performed through the EXPRESS/SOS 2026 EasyChair server

We are planning a special issue with selected papers from EXPRESS/SOS 2023-2025. More information will follow closer to the event.

Invited Speakers

TBA

Programme Committee

  • Giorgio Bacci (University of Aalborg, Denmark) co-chair

  • Anna Philippou (University of Cyprus, Cyprus) co-chair

  • Giovanni Bernardi (Université Paris Diderot - IRIF, France)
  • Marco Bernardo (University of Urbino, Italy)
  • Chiara Bodei (University of Pisa, Italy)
  • Johannes Borgström (Uppsala University, Sweden)
  • Georgiana Caltais (University of Twente, The Netherlands)
  • Pedro R. D’Argenio (Universidad Nacional de Córdoba - CONICET, Argentina)
  • Emanuele D’Osualdo (University of Konstanz, Germany)
  • Fatemeh Ghassemi (University of Tehran, Iran)
  • David N. Jansen (Institute of Software, Chinese Academy of Sciences, China)
  • Vasileios Koutavas (Trinity College Dublin, Ireland)
  • Jovanka Pantovic (University of Novi Sad, Serbia)
  • Marco Peressotti (University of Southern Denmark, Denmark)
  • Tatjana Petrov (University of Trieste, Italy)
  • … TBA

Organisers

For questions, please contact:

Registration

Express/SOS 2026 is planned as a physical event, with certain support for remote presence, for speakers and other participants who are unable or unwilling to come. To register for Express/SOS 2026, please visit the registration page of CONFEST 2026.