29th Workshop on Logic, Language, Information and Computation
WoLLIC 2023

Halifax, Canada
July 11–14, 2023

WoLLIC is an annual international forum on inter-disciplinary research involving formal logic, computing and programming theory, and natural language and reasoning. Each meeting includes invited talks and tutorials as well as contributed papers.

The 29th WoLLIC will be held at Dalhousie University in Halifax, Nova Scotia, Canada, July 11–14, 2023. It is scientifically sponsored by the Association for Symbolic Logic (ASL), the Interest Group in Pure and Applied Logics (IGPL), the Association for Logic, Language and Information (FoLLI), the European Association for Theoretical Computer Science (EATCS), the European Association for Computer Science Logic (EACSL), and the Sociedade Brasileira de Lógica (SBL).

Contributions are invited on all pertinent subjects, with particular interest in cross-disciplinary topics. Typical but not exclusive areas of interest are: foundations of computing, programming and Artificial Intelligence (AI); novel computation models and paradigms; broad notions of proof and belief; proof mining, type theory, effective learnability and explainable AI; formal methods in software and hardware development; logical approach to natural language and reasoning; logics of programs, actions and resources; foundational aspects of information organization, search, flow, sharing, and protection; foundations of mathematics; philosophical logic; philosophy of language.

Important dates

Please note: the submission deadlines have been extended by 2 weeks.

  • March 6, 2023 AoE: abstract submission
  • March 13, 2023 AoE: full paper submission
  • April 11, 2023: Student travel grant application
  • May 15, 2023: notification of authors
  • May 25, 2023: deadline to book on-campus accommodations
  • June 5, 2023: final version deadline (firm)
  • July 11–14, 2023: conference

Paper submission

Proposed contributions should be in English, and consist of a scholarly exposition accessible to the non-specialist, including motivation, background, and comparison with related works. Articles should be written in the LaTeX format of LNCS by Springer (see author's instructions at http://www.springer.com/computer/lncs?SGWID=0-164-6-793341-0). They must not exceed 12 pages, with up to 5 additional pages for references and technical appendices. The paper's main results must not be published or submitted for publication in refereed venues, including journals and other scientific meetings. It is expected that each accepted paper be presented at the meeting by one of its authors either in person or via remote connection. (At least one author is required to pay a full, on-site registration fee before granting that the paper will be published in the proceedings.) Papers must be submitted electronically at the WoLLIC 2023 EasyChair website https://easychair.org/conferences/?conf=wollic2023.

Student support

Student participation is encouraged at WoLLIC. Students will pay a reduced registration fee.

Thanks to ASL's scientific sponsorship, students who are ASL members can apply for a modest travel grant (deadline: 90 days before the event starts, i.e.: April 11). See http://www.aslonline.org/studenttravelawards.html for details. An ASL student membership costs USD $54, so this might be a good deal.

In addition to the ASL travel grants, we are also able to offer a limited amount of support for travel and accommocations directly to some students. Students who have already applied for an ASL travel grant will be given priority. If you are interested in the additional support, please send a request to selinger@mathstat.dal.ca by April 11. Please also arrange for a letter of reference from your supervisor, or appropriate other person, to the same email address, explaining whether the student has access to funding from local sources and how much.

Invited speakers

  • Thomas Bolander (Technical University of Denmark)
  • Makoto Kanazawa (Hosei University, Japan)
  • Michael Moortgat (Utrecht University, Netherlands)
  • Magdalena Ortiz (University of Umeå, Sweden)
  • Aybüke Özgün (University of Amsterdam, Netherlands)
  • Dusko Pavlovic (University of Hawaii, USA)
  • Richard Zach (University of Calgary, Canada)

Special session: "Journeys of Black Mathematicians" movie screening

In a special session at the WoLLIC 2023 conference, we plan to screen a documentary film that explores the groundbreaking achievements of African American mathematicians. "Journeys of Black Mathematicians" is a powerful film that traces the history of these pioneering individuals and their impact on mathematics. This film is not only a tribute to their achievements, but also an inspiration for Black and other minority students to pursue their studies and consider careers in mathematics.

The film is currently in production and its filmmaker, George Csicsery, has agreed to give us a sneak peek. We will be shown a rough cut if it is ready by the screening date. If not, George will be showcasing some sample scenes to give us a taste of what's to come.


The proceedings of WoLLIC 2023, including both invited and contributed papers, will be published after the meeting as a volume in Springer's LNCS series. In addition, abstracts will be published in the Conference Report section of the Logic Journal of the IGPL, and selected contributions will be published (after a new round of reviewing) as a special post-conference WoLLIC 2023 issue of a scientific journal (TBA).

Registration and local information

WoLLIC 2023 will be a hybrid event, with all invited speakers planning to present on-site to facilitate meaningful interaction and discussions. Registration is not yet open.

Please book your accommodations as early as possible, because Halifax is currently experiencing a housing crisis and hotel prices have skyrocketed. For a list of accommodation choices, see the Accommodations Page.

For information on how to get to Halifax from the airport, see the Airport Transportation Page.

All talks will be held in room 1009 of the Kenneth C. Rowe Management Building at 6100 University Avenue. Here is a map of the area:

Travel to Canada

Most foreign nationals need an electronic travel authorization before flying to Canada. This applies to all visa-exempt foreign nationals (for example, European citizens). It only costs $7 and can be done efficiently at the eTA website. The eTA requirement does not apply to U.S. citizens, nor to visitors who need an actual visa to travel to Canada.


Program Committee

  • Bahareh Afshari, University of Gothenburg, Sweden and University of Amsterdam, Netherlands
  • Zena Ariola, University of Oregon, USA
  • Adriana Balan, University Politechnica of Bucharest, Romania
  • Marta Bílková, Czech Academy of Sciences, Czech Republic
  • Ranald Clouston, Australian National University, Australia
  • Willem Conradie, University of the Witwatersrand, South Africa
  • Josée Desharnais, Laval University, Canada
  • David Fernández-Duque, Czech Academy of Sciences, Czech Republic
  • Santiago Figueira, Universidad de Buenos Aires, Argentina
  • Silvia Ghilezan, University of Novi Sad & Mathematical Institute SASA, Serbia
  • Sujata Ghosh, Indian Statistical Institute, India
  • Nina Gierasimczuk, Technical University of Denmark, Denmark
  • Helle Hvid Hansen, University of Groningen, Netherlands (co-chair)
  • Andreas Herzig, CNRS, University of Toulouse, France
  • Juha Kontinen, University of Helsinki, Finland
  • Roman Kuznets, TU Wien, Austria
  • Martha Lewis, University of Bristol, UK
  • Johannes Marti, University of Oxford, UK
  • George Metcalfe, University of Bern, Switzerland
  • Cláudia Nalon, University of Brasilia, Brasil
  • Carlos Olarte, Université Sorbonne Paris Nord, France
  • Sophie Pinchinat, University of Rennes, France
  • Francesca Poggiolesi, CNRS, University Paris 1 Panthéon-Sorbonne, France
  • Sylvain Pogodalla, INRIA Nancy, France
  • Revantha Ramanayake, University of Groningen, Netherlands
  • Mehrnoosh Sadrzadeh, University College London, UK
  • Andre Scedrov, University of Pennsylvania, USA (co-chair)
  • Philip Scott, University of Ottawa, Canada
  • Viorica Sofronie-Stokkermans, University of Koblenz-Landau, Germany
  • Kazushige Terui, Kyoto University, Japan
  • Mladen Vuković, University of Zagreb, Croatia

Steering Committee

Samson Abramsky, Anuj Dawar, Juliette Kennedy, Ulrich Kohlenbach, Daniel Leivant, Leonid Libkin, Lawrence Moss, Luke Ong, Valeria de Paiva, Ruy de Queiroz, Alexandra Silva, Renata Wassermann.

Advisory Committee

Johan van Benthem, Joe Halpern, Wilfrid Hodges, Angus Macintyre, Hiroakira Ono, Jouko Väänänen.

Organizing committee

  • Julien Ross, Dalhousie University
  • Peter Selinger, Dalhousie University (co-chair)
  • Anjolina G. de Oliveira, Univ Federal de Pernambuco, Brasil
  • Ruy de Queiroz, Univ Federal de Pernambuco, Brasil (co-chair)

Financial sponsors

We gratefully acknowledge financial support from:


WoLLIC 2023 is organized by the Department of Mathematics and Statistics of Dalhousie University, and by the Centro de Informática, Universidade Federal de Pernambuco, Brazil.

For questions related to submissions and the scientific program, please email one of the PC co-chairs: Helle Hvid Hansen or Andre Scedrov. For questions about the local organisation, please email Peter Selinger or Julien Ross. For general questions about the WoLLIC conference series, please email Ruy de Queiroz.