2–8 July 2023, UCLouvain, Louvain-la-Neuve, Belgium
ProgrammeIn July 2023 the International Category Theory Conference CT2023 will take place at the Université catholique de Louvain.
The last four CT conferences were held at Genova (2021), Edinburgh (2019), Ponta Delgada (2018) and Vancouver (2017).
We have six invited speakers who will each give a 50-minute lecture, slots for 25-minute contributed talks and poster sessions. Contributions on all aspects of category theory, pure and applied, are welcome. Click here for the full programme.
During the conference there will be a commemorative session in honour of Bill Lawvere.
Certain lectures have been recorded by Michael Wright of the Archive Trust for Research: click here for the playlist.
Louvain-la-Neuve, Belgium
The conference will take place entirely on site.
A 50-minute plenary lecture will be given by
George Janelidze | University of Cape Town, South Africa |
Steve Lack | Macquarie University, Australia |
Vanessa Miemietz | University of East Anglia, United Kingdom |
Paolo Perrone | University of Oxford, United Kingdom |
Luca Reggio | University College London, United Kingdom |
Christina Vasilakopoulou | National Technical University of Athens, Greece |
Category Theory 2023 is organised by
Category Theory 2023 will be held at UCLouvain, Louvain-la-Neuve, Belgium.
The town Louvain-la-Neuve, located in the Belgian province Brabant Wallon, is the main site of the Université catholique de Louvain. The conference will be held at the Auditoires des Sciences (place des Sciences 2) in the town centre.
Louvain-la-Neuve is easily reachable by car (via the E411) or by train (via Ottignies, which lies on the line between Brussels and Namur). Beware: Leuven (= Louvain in French) is a different town!
The lectures will take place in rooms Georges Lemaître-A.10 (plenary sessions), A.02 and A.03 (parallel sessions) and Salle d'Étude A.04 (poster sessions, entrance A.04A and A.04B) at the Auditoires des Sciences building, place des Sciences 2, Louvain-la-Neuve.
Here you find the schedule of the conference, together with information on the session in honour of Bill Lawvere and some explanation concerning the social activities and other practical matters.
Click here for a pdf with full information.
Speakers at this commemorative session will highlight some of Bill Lawvere's many contributions to Category Theory and beyond, reflect on their importance, and share personal memories. Anders Kock will give the main presentation, followed by short contributions by Peter Johnstone, Ieke Moerdijk, Matias Menni, Giuseppe Rosolini and George Janelidze.
The session will be chaired by Walter Tholen.
Click here for a recording made by Michael Wright of the Archive Trust for Research.
On Sunday evening (the 2nd of July, between 17:00 and 19:00) there is a Welcome Drink at the Auditoires des Sciences, the main location of the conference. During the drink you can do the local registration (pick up your badge, meal tickets, certificates and so on), otherwise it is possible to do so on Monday morning starting from 8:30.
Monday to Friday lunch is served at two university restaurants: Le Galilée, right next to the Auditoires des Sciences building where the lectures take place, and Le Sablon, in the town centre (rue du Sablon 11).
We are planning some social activities for Wednesday afternoon. There are six options to choose from (please note that we can allow only a limited number of participants for each activity, but we will do our best to accommodate everyone):
The museums are close to each other in Brussels, where we will go by train. The next three options will be reached by a private bus:
On the evening of Thursday the 6th of July, starting at 19:30 there is the Conference Dinner which will take place at the Aula Magna.
Here you will find supporting material used in the lectures and poster presentations. We are putting it online gradually in chronological order. Note that we need your permission if you want us to publish your work here. In case we forgot something, please let us know.
George Janelidze | A new direction in non-pointed categorical algebra |
Dominique Bourn | Towards a varietal encyclopedia of internal categories |
Diana Rodelo | Jónsson categories |
Andrea Montoli | Non-pointed abelian categories |
Lyne Moser | New methods for contructing model categories |
Philip Hackney | Edgewise subdivision, culf maps, and right fibrations |
Marcello Lanfranchi | The Tangent Categories of Algebras over an Operad |
Ruben Van Belle | Radon-Nikodym derivatives and martingales |
Daniel Luckhardt | Norms on Categories |
Alan Cigoli | Birkhoff subfibrations |
Yuto Kawase | Birkhoff's variety theorem for relative algebraic theories |
Aline Michel | Galois structures in preordered groups |
Vanessa Miemietz | Categorification in Representation Theory |
Steve Awodey | Cartesian cubical model categories |
Graham Manuell | The representing localic groupoid of a geometric theory |
Nathanael Arkor | The formal theory of relative monads |
John Bourke | A skew approach to enrichment for Gray categories |
Lurdes Sousa | Lax epimorphisms in CAT, V-Cat and everywhere |
Matheus Duzi | Categorical incarnations of infinite games |
Jonathan Weinberger | The dependent Gödel fibration |
Joshua Wrigley | When are there enough model isomorphisms? |
Davide Trotta | Sheafification as a geometric tripos-to-topos adjunction |
Anders Kock | Special Session in memory of F.W. Lawvere |
Christina Vasilakopoulou | Sweedler theory for double categories |
Eugenia Cheng | A twisted Boardman–Vogt tensor product for operads |
Clemens Berger | On the profinite fundamental group of a connected Grothendieck topos |
Steve Lack | Enriched accessible categories |
Isar Stubbe | A logical analysis of Banach's fixpoint theorem |
Susan Niefield | Cartesian Closed Double Categories |
Tom Leinster | Magnitude homology |
Registration is now closed.
Registration for the conference is now open, until the 10th of May 2023. To register, please fill out this form.
There is a registration fee which includes coffee breaks, the Welcome Drink on Sunday evening, lunches from Monday to Friday, the excursion on Wednesday afternoon and the Conference Dinner at the Aula Magna on Thursday evening. The fee is lower for M.Sc. and Ph.D. students; it is also lower if you register (and pay the fee) on the 10th of April 2023 at the latest.
Standard fee | 250 euro |
Early registration | 200 euro |
Student fee | 150 euro |
Additionally, there is a flat rate of 100 euro for accompanying persons wishing to participate in the Conference Dinner and any other of the social activities such as the excursion on Wednesday.
The fee is to be paid no later than May 11th by bank transfer onto the UCLouvain account IBAN BE66 0910 0157 2843, BIC GKCCBEBB (Belfius bank, Pachecolaan 44, B-1000 Brussels, Belgium). Please indicate the reference L1.31500.016 - inscription CT2023 - YOUR NAME. We confirm the payment upon reception.
Here is a list of registered participants with their affiliations.
Jiri Adamek | Czech Technical University Prague and Technical University Braunschweig |
Anthony Agwu | Johns Hopkins University |
Benedikt Ahrens | Delft University of Technology and University of Birmingham |
Hisashi Aratake | Kyoto University |
Nathanael Arkor | Masaryk University |
Steve Awodey | Carnegie Mellon University |
Igor Baković | Queen Mary University of London |
Carine Baras | UCLouvain |
Alvaro Belmonte | Johns Hopkins University |
Clemens Berger | Université Côte d'Azur |
Marius Berthoumieux | UCLouvain |
Francis Borceux | UCLouvain |
Lucrezia Bottegoni | University of Turin |
John Bourke | Masaryk University |
Dominique Bourn | Université du Littoral |
Dylan Braithwaite | University of Strathclyde |
Federico Campanini | UCLouvain |
Timothy Campion | Johns Hopkins University |
Matteo Capucci | University of Strathclyde |
Nicola Carissimi | Université de Lille |
Elena Caviglia | University of Leicester |
Clovis Chabertier | Institut de Mathématiques de Jussieu-Paris Rive Gauche |
Eugenia Cheng | School of the Art Institute of Chicago |
El Mehdi Cherradi | IRIF - Université Paris cité |
Boris Chorny | University of Haifa (Oranim) |
Alan Cigoli | Università degli Studi di Torino |
Cipriano Junior Cioffo | Università degli Studi di Padova |
Bryce Clarke | Inria Saclay |
Maria Manuel Clementino | Universidade de Coimbra |
Alexander Corner | Sheffield Hallam University |
Maxime Culot | UCLouvain |
Jacques Darné | UCLouvain |
Subhajit Das | Indian Institute of Science (IISc), Bangalore, India |
Cédric de Lacroix | AMU/LIS |
Florian De Leger | Czech Academy of Sciences |
Bo Shan Deval | UCLouvain |
Ivan Di Liberti | Stockholm University |
Matthew Di Meglio | University of Edinburgh |
Nicola Di Vittorio | Macquarie University |
Brandon Doherty | Stockholm University |
Adrián Doña Mateo | University of Edinburgh |
Wojciech Duliński | University of Warsaw |
Arnaud Duvieusart | Università degli Studi di Milano |
Matheus Duzi Ferreira Costa | University of São Paulo |
Jacopo Emmenegger | Università di Genova |
Peter Faul | Ecole Polytechnique |
Gregor Feierabend | Stellenbosch University |
Bojana Femić | Mathematical Institute of Serbian Academy of Sciences and Arts |
Marcelo Fiore | University of Cambridge |
Carlos Fitas | CMUC - Universidade de Coimbra |
David Forsman | UCLouvain |
Xabier García Martínez | Universidade de Vigo |
Francesco Genovese | Università di Milano |
Marino Gran | UCLouvain |
Rhiannon Griffiths | Cornell University |
Chris Grossack | UC Riverside |
Léonard Guetta | Max Planck Institute for Mathematics |
Philip Hackney | University of Louisiana at Lafayette |
Sebastian Halbig | University of Marburg |
Rodrigue Haya Enriquez | UCLouvain |
Sina Hazratpour | Johns Hopkins University |
Jens Hemelaer | University of Antwerp |
Simon Henry | University of Ottawa |
Tom Hirschowitz | CNRS and Savoie Mont Blanc University |
Michael Hoefnagel | Stellenbosch University |
Dirk Hofmann | University of Aveiro |
Ryuya Hora | University of Tokyo |
Keisuke Hoshino | RIMS, Kyoto University |
Calum Hughes | The University of Manchester |
Sacha Ikonicoff | University of Ottawa |
Luka Ilic | QMUL |
Victor Iwaniack | Université Côte d'Azur |
George Janelidze | University of Cape Town |
Michael Johnson | Macquarie University |
Peter Johnstone | University of Cambridge |
Moana Jubert | IRIF, Inria, CNRS, Université Paris-Cité |
Jan Jurka | Masaryk University |
Kristóf Kanalas | Masaryk University |
Yuto Kawase | Kyoto University |
David Kern | IMAG (Université de Montpellier) |
Anders Kock | University of Aarhus, Denmark |
Joachim Kock | Universitat Autònoma de Barcelona and University of Copenhagen |
Steve Lack | Macquarie University |
Marcello Lanfranchi | Dalhousie University |
Georg Lehner | Free University of Berlin |
Tom Leinster | University of Edinburgh |
Damien Lejay | Unaffiliated |
Gabriele Lobbia | Masarykova Univerzita |
Guillermo Lopez Cafaggi | UClouvain |
Fosco Loregian | Tallinn University of Technology |
Fernando Lucatelli Nunes | Utrecht University, Netherlands; and CMUC, Portugal |
Daniel Luckhardt | University of Sheffield |
Rory Lucyshyn-Wright | Brandon University |
Yuki Maehara | Kyushu University |
Manuel Mancini | Università degli Studi di Palermo |
Sandra Mantovani | Università degli Studi di Milano |
Graham Manuell | University of Coimbra |
Ioannis Markakis | University of Cambridge |
Francisco Marmolejo | Universidad Nacional Autónoma de México |
Jérémie Marquès | Université Nice Côte d'Azur |
Nelson Martins-Ferreira | Politécnico de Leiria |
Sébastien Mattenet | UCLouvain |
Matías Menni | Conicet and Universidad Nacional de La Plata, Argentina |
Arne Mertens | University of Antwerp |
Luca Mesiti | University of Leeds |
Mariano Messora | Università degli Studi di Milano |
Giuseppe Metere | Università degli Studi di Palermo |
Aline Michel | UCLouvain |
Vanessa Miemietz | University of East Anglia |
Thomas Jan Mikhail | Autonomous University of Barcelona |
Adrian Miranda | University of Manchester |
Ieke Moerdijk | Utrecht University |
Andrea Montoli | Università degli Studi di Milano |
Vincent Moreau | IRIF, Université Paris Cité, Inria Paris |
Lyne Moser | University of Regensburg |
David Jaz Myers | CQTS - New York University Abu Dhabi |
Hayato Nasu | Kyoto University |
Andrew Neate | University of Sheffield |
Chad Nester | Tallinn University of Technology |
Susan Niefield | Union College |
Cihan Okay | Bilkent University |
Axel Osmond | Istituto Grothendieck |
Daniël Otten | ILLC, University of Amsterdam |
Simona Paoli | University of Aberdeen |
Hugo Paquet | LIPN, Université Sorbonne Paris Nord |
Paul-Eugène Parent | Université d'Ottawa |
Jason Parker | Brandon University |
Davide Perinti | ILLC (UvA) |
Paolo Perrone | University of Oxford |
Jorge Picado | Universidade de Coimbra |
Aberdeen Powell | University of East Anglia |
Rui Prezado | CMUC - Universidade de Coimbra |
Dorette Pronk | Dalhousie University |
Julia Ramos González | UCLouvain |
Sanjiv Ranchod | University of Cambridge |
George Raptis | University of Regensburg |
Nima Rasekh | Max Planck Institute for Mathematics |
Luca Reggio | University College London |
Ülo Reimaa | University of Tartu |
Alyssa Renata | ILLC (University of Amsterdam) |
Emily Riehl | Johns Hopkins University |
John Robert | Independent researcher |
Diana Rodelo | CMUC Universidade do Algarve |
Emily Roff | University of Edinburgh |
Morgan Rogers | LIPN CNRS |
Jack Romö | University of Leeds |
Giuseppe Rosolini | Università di Genova |
Martina Rovelli | UMass Amherst |
Gabriel Saadia | Stockholm University |
Alessio Santamaria | University of Sussex |
Luigi Santocanale | LIS, Aix-Marseille Université |
Maru Sarazola | Johns Hopkins University |
Chiara Sarti | University of Cambridge |
Philip Saville | University of Oxford |
Léo Schelstraete | UCLouvain |
Andrea Sciandra | Università degli Studi di Torino |
Mark Sioen | VUB (Vrije Universiteit Brussel) |
José Siqueira | University of Cambridge |
Andrew Slattery | University of Leeds |
Manuela Sobral | Universidade de Coimbra |
Lurdes Sousa | CMUC Coimbra and Polytechnic of Viseu |
Matteo Spadetto | University of Leeds |
Isar Stubbe | Université du Littoral |
Dmitrij Szamozvancev | University of Cambridge |
Miloslav Štěpán | Masaryk University |
Paul Taylor | University of Birmingham (honorary) |
Giacomo Tendas | Masarykova Univerzita |
Walter Tholen | York University Toronto |
Ivan Tomasic | Queen Mary University of London |
Davide Trotta | University of Pisa |
Ruben Van Belle | University of Edinburgh |
Tim Van der Linden | UCLouvain |
Jaap van Oosten | Utrecht University |
Christina Vasilakopoulou | National Technical University of Athens |
Pedro Vaz | UCLouvain |
Joost Vercruysse | Université Libre de Bruxelles (ULB) |
Corentin Vienne | UCLouvain |
Enrico Vitale | UCLouvain |
Jonathan Weinberger | Johns Hopkins University |
Simon Willerton | University of Sheffield |
Michael Wright | The Archive Trust for Research in Mathematical Sciences |
Joshua Wrigley | University of Insubria |
Yiqi Xu | Universität Stuttgart |
Errol Yuksel | Stockholm University |
Marek Zawadowski | University of Warsaw |
Tony Zorman | TU Dresden |
Submission of abstracts is now closed.
Here are some places to stay in Louvain-la-Neuve. Please be aware that accommodation in Louvain-la-Neuve is limited, so it makes sense to book as soon as possible. Alternatively, it may be convenient to stay in Wavre or in Brussels.
For booking at the university rate of €119 per night (single room, breakfast included), please fill in the form on this website, using the code CT2023. We pre-booked 80 rooms until the 15th of May.
For booking at the university rate of €95 per night (single room, breakfast included), please fill out the booking form and send it to the hotel. We pre-booked 60 rooms until the 26th of May.
A basic single room with breakfast included is €57,65 per night. Shared rooms are available as well. Please send an e-mail to info@gite-mozaik.be mentioning the code UCL/IRMP/MATH/CT2023. — now fully booked
Le Relais is a student house, where we could reserve a very limited number of rooms of various kinds, with prices starting from around €35 per night (no breakfast). For further information, please contact Laila Dawdi. To book, fill out the booking form and mention the code CT2023. We pre-booked 16 rooms until the 26th of May. — now fully booked
Another way to find accommodation is via airbnb: many options are available in and around Louvain-la-Neuve.
Please contact us if you have any further questions.