March 2025 - Categories - categories.org.au

Lecture notes by Bill Lawvere
by Michael Barr, Prof. 23 Apr '26

23 Apr '26

I got a request from someone named C. Muster who is searching for a set of lecture notes by Bill that he gave at U. Laval in 1974. Does anyone have a copy that they would be willing to send to him. Michael You're receiving this message because you're a member of the Categories mailing list group from Macquarie University. To take part in this conversation, reply all to this message. View group files<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Leave group<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Learn more about Microsoft 365 Groups<https://aka.ms/o365g>

5 4

Collection honouring Robert Paré for his 80th birthday
by Bryce James Clarke 13 Jun '25

13 Jun '25

We are pleased to announce a special collection in Applied Categorical Structures honouring our friend and colleague, Bob Paré, on the occasion of this 80th birthday. Throughout his career Bob (Professor Emeritus and Adjunct Professor at Dalhousie University) has made several lasting contributions to category theory, including notable research in a broad range of subjects, such as double categories, higher categories, indexed categories, toposes and accessible categories. This collection will bring together contributions which honour the lasting impact Bob has made, and is making, in the category theory community. Submissions will be open from 1 October 2024 until 30 June 2025 at this link: https://link.springer.com/collections/dijeibfdbh All submissions on topics which celebrate Bob's work are welcome, including double categories, higher categories, indexed categories, toposes and accessible categories. The collection will be edited by four guest editors: - Bryce Clarke (Tallinn University of Technology) - Marco Grandis (University of Genoa) - Dorette Pronk (Dalhousie University) - Christina Vasilakopoulou (National Technical University of Athens) The publication process for this collection in Applied Categorical Structures differs from the traditional model for a special volume. Articles are published within whichever issue is open at the time, and concurrently published in the collection available at the above link. This helps papers to be published quickly, without having to wait for a whole issue to be ready, while still allowing all papers in the collection to be available in a single place. The editors are happy to answer any questions, and we look forward to receiving your submissions. Best wishes, Bryce, Marco, Dorette, and Christina. You're receiving this message because you're a member of the Categories mailing list group from Macquarie University. To take part in this conversation, reply all to this message. View group files<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Leave group<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Learn more about Microsoft 365 Groups<https://aka.ms/o365g>

1 1

MFPS FInal Call for Papers (extended deadlines)
by Stefan Milius 28 Mar '25

28 Mar '25

======================================================================= FINAL CALL FOR PAPERS: MFPS XLI (MFPS 2025) 41st Conference on Mathematical Foundations of Programming Semantics June 18-20, 2025 in Glasgow, Scotland Joint with CALCO https://url.au.m.mimecastprotect.com/s/tMScCq71jxf8nZQMwiZfEUEkh_u?domain=c… *** Update: extended deadlines *** ======================================================================= IMPORTANT DATES (anywhere on earth): Abstract Submission: April 8, 2025 Paper Submission: April 9, 2025 Notification: May 15, 2025 Conference Paper: May 24, 2025 Final (post-proceeding) versions: Autumn 2025 ========================================================================= We are delighted to announce the 41st Conference on the Mathematical Foundations of Programming Semantics (MFPS 2025). It will take place at the University of Strathclyde in Glasgow, Scotland. MFPS conferences are dedicated to the areas of mathematics, logic, and computer science that are related to models of computation in general, and to semantics of programming languages in particular. This is a forum where researchers in mathematics and computer science can meet and exchange ideas. The participation of researchers in neighbouring areas is strongly encouraged. Topics include, but are not limited to, the following: bio-computation; concurrent qualitative and quantitative distributed systems; process calculi; probabilistic systems; constructive mathematics; domain theory and categorical models; formal languages; formal methods; game semantics; lambda calculus; programming language theory; quantum computation; security; topological models; logic; type systems; type theory; denotational and operational semantics; rewrite theory; proof theory. We also welcome contributions that address applications of semantics to novel areas. Participation in the meeting is expected to be in person; one author of every accepted paper has to attend the meeting and give the presentation. Exceptions might be in case there are unexpected problems with travel/visa. ----------------------------------------------------------------------- INVITED SPEAKERS: * Gordon Plotkin (keynote; joint with CALCO) * Chris Heunen * Delia Kesner * Jurriaan Rot ----------------------------------------------------------------------- SPECIAL SESSIONS: * Quantitative Semantics, organized by Ugo Dal Lago (joint session with CALCO) * Mathematics of Natural Language, organized by Mehrnoosh Sadrzadeh * Types and the Extraction of Correct Programs, organized by Ulrich Berger ----------------------------------------------------------------------- PROGRAM COMMITTEE: Sandra Alves, University of Porto, Portugal Giorgio Bacci, Aalborg University, Denmark Lars Birkedal, University of Arhus, Denmark Florence Clerc, Heriot-Watt University, Edinburgh, Scotland Robin Cockett, University of Calgary, Canada Claudia Faggian, IRIF Paris, France Giulio Guerrieri, University of Sussex, UK Shin-ya Katsumata, NII, Tokyo, Japan S. Krishna, IIT Bombay, India Clemens Kupke, University of Strathclyde, Scotland (co-chair) Elena di Lavore, University of Pisa, Italy Paul Levy, University of Birmingham, UK Isabella Mastroeni, University of Verona, Italy Stefan Milius, FAU Erlangen-Nürnberg, Germany (co-chair) Daniele Nantes-Sobrinho, Imperial College London, UK Fredrik Nordvall Forsberg, University of Strathclyde, Scotland Catuscia Palamidessi, Inria, France Prakash Panangaden, McGill University, Montreal, Canada Simon Perdrix, Inria LORIA, France Elaine Pimentel, University College London, UK Alex Simpson, University of Ljubljana, Slovenia Sam Staton, University of Oxford, UK Dario Stein, Radboud University Nijmegen, The Netherlands Qiyi Tang, University of Liverpool, UK Stelios Tsampas, FAU Erlangen-Nürnberg, Germany ----------------------------------------------------------------------- MFPS ORGANIZERS: Andrej Bauer, University of Ljubljana, Slovenia Lars Birkedal, Aarhus University, Denmark Stephen Brookes, Carnegie Mellon University, USA Achim Jung, University of Birmingham, UK Marie Kerjean, LIPN, Paris Clemens Kupke, University of Strathclyde, Scotland Paul Levy, University of Birmingham, UK Catherine Meadows, Naval Research Laboratory, USA Stefan Milius, FAU Erlangen-Nürnberg, Germany Michael Mislove, Tulane University, USA Joël Ouaknine, Max Planck Institute for Software Systems, Germany Valeria de Paiva, Topos Institute, USA Prakash Panangaden, McGill University, Canada Alexandra Silva, Cornell University, USA Alex Simpson, University of Ljubljana, Slovenia Sam Staton, University of Oxford, UK ----------------------------------------------------------------------- LOCAL ORGANIZER: Clemens Kupke, University of Strathclyde Bob Atkey, University of Strathclyde Dilsat Bilal Yuksel, University of Strathclyde ----------------------------------------------------------------------- SUBMISSION INSTRUCTIONS: Submissions are made through EasyChair (https://url.au.m.mimecastprotect.com/s/MdB5Cr810kC87EqBJizh7U4Xcpt?domain=e…) Papers can be at most **15 pages** long, excluding bibliography, and should be prepared using the MFPS macros (https://url.au.m.mimecastprotect.com/s/7e9jCvl1g2S7qx9kVczivUQb2AX?domain=m…) Proofs omitted due to space limitations may be included in a clearly marked appendix, to be consulted at the discretion of program committee members. ----------------------------------------------------------------------- PROCEEDINGS: A preliminary version will be distributed at the meeting. Final proceedings will be published in Electronic Notes in Theoretical Informatics and Computer Science (ENTICS). This new open-access series is hosted by Episciences.org as an overlay for papers published by the CORR arXiv or HAL. ----------------------------------------------------------------------- CONTACT: For any further information about MFPS 2025, please contact the co-chairs: Clemens Kupke and Stefan Milius (mfps2025(a)easychair.org)

1 0

CFS Workshop on Logical and Mathematical Diagrams (LoMaDi)
by Edward Roussel 27 Mar '25

27 Mar '25

CALL FOR SUBMISSIONS Workshop on Logical and Mathematical Diagrams (LoMaDi) Center for Logic and Philosophy of Science, KU Leuven Leuven, Belgium 15-16 September, 2025 Submission deadline: 12/05/2025 https://logicalgeometry.org/events/lomadi2025 ----------------------------------------- ABOUT LoMaDi ----------------------------------------- The LoMaDi workshop is a brand new workshop aiming to support the growing community of researchers who are interested in logical or mathematical diagrams, such as (but not limited to) Aristotelian diagrams, Euler diagrams, commutative diagrams, knot diagrams, Venn diagrams, Hasse diagrams, etc. We welcome submissions from researchers that work directly on such kinds of diagrams, from a logical, philosophical, mathematical, historical, aesthetic, cognitive, … perspective. Furthermore, we also welcome submissions from those that apply these diagrams in all sorts of research domains, be it law, psychology, computer science, linguistics, philosophy, natural sciences, or some other field. In this way, we hope to stimulate interdisciplinary work, the transfer of knowledge between fields, and the conception of creative new insights. We encourage both junior researchers (including students) and established academics to make a submission, which can range from work-in-progress to completed research. The workshop does not have proceedings, so work can be submitted even if it has been submitted or published elsewhere. This workshop is supported by the ERC Starting Grant STARTDIALOG (101040049). Funded by the European Union. Views and opinions expressed are, however, those of the authors only and do not necessarily reflect those of the European Union or the European Research Council Executive Agency. Neither the European Union nor the granting authority can be held responsible for them. ----------------------------------------- KEYNOTE SPEAKERS ----------------------------------------- Sun-Joo Shin Valeria Giardino Jens Lemanski ----------------------------------------- IMPORTANT DATES ----------------------------------------- All deadlines are 23:59 Anywhere on Earth. Submission deadline: 12/05/2025 Author notification: 26/05/2025 Workshop dates: 15-16 September, 2025 ----------------------------------------- INSTRUCTIONS FOR SUBMISSION ----------------------------------------- If you are interested in presenting at the LoMaDi workshop, please submit an anonymized abstract of at most one page (in PDF format) to lomadi(a)kuleuven.be If you have any questions regarding the submission process or other things related to the workshop, you can direct them to lomadi(a)kuleuven.be ----------------------------------------- ORGANIZING COMMITTEE ----------------------------------------- Alexander De Klerck, KU Leuven Lorenz Demey, KU Leuven Jasper Eeckhout, KU Leuven Atahan Erbas, KU Leuven Stef Frijters, KU Leuven Edward Roussel, KU Leuven Hans Smessaert, KU Leuven You're receiving this message because you're a member of the Categories mailing list group from Macquarie University. To take part in this conversation, reply all to this message. View group files<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Leave group<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Learn more about Microsoft 365 Groups<https://aka.ms/o365g>

1 0

HoTT/UF 2025: Registration
by Felix Cherubini 23 Mar '25

23 Mar '25

========================================================== * Registration deadline: Friday 28 March * Talk schedule online Workshop on Homotopy Type Theory and Univalent Foundations 15–16 April 2025, Genoa, Italy https://hott-uf.github.io/2025/ Co-located with the WG6 meeting of the EuroProofNet COST action 17–18 April 2025 https://europroofnet.github.io/wg6-genoa/ ========================================================== Homotopy Type Theory is a young area of logic, combining ideas from several established fields: the use of dependent type theory as a foundation for mathematics, inspired by ideas and tools from abstract homotopy theory. Univalent Foundations are foundations of mathematics based on the homotopical interpretation of type theory. The goal of this workshop is to bring together researchers interested in all aspects of Homotopy Type Theory/Univalent Foundations: from the study of syntax and semantics of type theory to practical formalization in proof assistants based on univalent type theory. The workshop will be held in person with support for remote participation. We encourage online participation for those who do not wish to or cannot travel. ================ # Registration Please register by filling out this form: https://docs.google.com/forms/d/1gdjtFWQwLNKtK1hRpLsmjKO_kTSg0-J9N2Ndfjmc-7… Registration is mandatory (also if you're attending online only). Registration deadline: 28 March 2025 ================ # Invited speakers * Reid Barton (Carnegie Mellon University, USA) * Bastiaan Cnossen (University of Regensburg, Germany) * Ambrus Kaposi (Eötvös Loránd University, Hungary) ================ # Contributed talks Authors and titles of contributed talks are listed on the website as is the schedule of talks. ================ # Program committee * Ulrik Buchholtz (University of Nottingham) * Pierre Cagne (Applachian State University) * Dan Christensen (The University of Western Ontario) * Felix Cherubini (Chalmers University of Technology/University of Gothenburg) * Tom de Jong (University of Nottingham) * Jonas Frey (Université Sorbonne Paris Nord) * Daniel Gratzer (Aarhus University) * Philipp Haselwarter (Aarhus University) * András Kovács (University of Gothenburg) * Anja Petković Komel (TU Wien) * Loïc Pujet (University of Stockholm) * Mitchell Riley (NYU Abu Dhabi) ================ # Organizers * Felix Cherubini, felix.cherubini(a)posteo.de (Chalmers University of Technology/University of Gothenburg) * Tom de Jong, tom.dejong(a)nottingham.ac.uk (University of Nottingham) * Daniel Gratzer, gratzer(a)cs.au.dk (Aarhus University) * Mitchell Riley, mitchell.v.riley(a)nyu.edu (NYU Abu Dhabi) You're receiving this message because you're a member of the Categories mailing list group from Macquarie University. To take part in this conversation, reply all to this message. View group files<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Leave group<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Learn more about Microsoft 365 Groups<https://aka.ms/o365g>

1 0

postdoc position in Brussels
by VERCRUYSSE Joost 22 Mar '25

22 Mar '25

Dear colleagues, Hereby I make a call for applications for a postdoctoral position that is available at the Université Libre de Bruxelles (Brussels, Belgium). The candidate is expected to start in October 2025. The contract is for one year, but can be renewed twice (so for a maximum period of 3 years). To be eligible, candidates should have obtained a PhD before the start of the contract, and should satisfy the “mobility rule” which means that they did not work, nor resided in Belgium during at least 12 out of 36 months before the start of the contract. The same rule should be satisfied at the start of the 2nd and 3rd year of the contract, in case of an extension. The gross salary of the grant is 3116 eur per month. The grant also comes with a bench fee (about 2500 eur per year) for travelling and/or buying a computer. The vacancy is opened in the framework of the research project “Reconstruction of modules and algebraic objects from closed and monoidal structures on their representation categories”, funded by the fnrs (the agency for scientific research of the French speaking community in Belgium) and with Joost Vercruysse as PI. The title already hints on the main topics of the project: Hopf algebras, and generalisations of these such as Hopf algebroids and Hopf monads, closed and monoidal categories of (partial) representations over these. Apart from developing their own research, the selected candidate is expected to devote some of their time on the themes of the project and collaborate with other members of the group. On purpose, the procedure for applying is kept as simple as possible, it suffices to send the following documents by email to Joost.Vercruysse(a)ulb.be before April 20, 2025: -A short motivation letter (max 1 page) -A short CV, containing previous grants and positions and a complete publication list -The e-mail addresses of at least 3 possible researchers holding a permanent position and who can write a reference letter. At least one of these should be a (former) supervisor, at least one should not be a (former) supervisor. The results will be communicated by the end of May 2025. Please forward this message to anyone who might be interested. Feel free to contact me in case you have any questions about the position or its conditions. ---------- You're receiving this message because you're a member of the Categories mailing list group from Macquarie University. Leave group: https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…

1 1

PhD position at the University of Sussex, starting Sept 2025
by Philip Saville 18 Mar '25

18 Mar '25

Dear all, I'm fortunate to be able to advertise a 3.5 year, funded PhD studentship at the University of Sussex, to start in September 2025. The PhD will be in the Department of Informatics, but could include a significant portion of pure category theory. The closing date for applications is 14th May. The exact project can be tailored to the successful applicant, but will likely focus on using category theory to understand the structure and behaviour of programming languages. My research tends to make use of 2-dimensional category theory and ideas from categorical logic and universal algebra. Sussex's Foundations of Software Systems group has recently been growing, and hosts researchers with interests across logic and programming languages. The university campus is just outside the seaside town of Brighton, and almost entirely surrounded by the South Downs national park. For more information, see the Sussex page or feel free to email me at p.saville(a)sussex.ac.uk<mailto:p.saville@sussex.ac.uk> – also please pass this on to any students you know who may be interested! Thanks, Philip You're receiving this message because you're a member of the Categories mailing list group from Macquarie University. To take part in this conversation, reply all to this message. View group files<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Leave group<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Learn more about Microsoft 365 Groups<https://aka.ms/o365g>

1 0

Reminder: Collection honouring Robert Paré for his 80th birthday
by Bryce Clarke 18 Mar '25

18 Mar '25

Dear all, This is a reminder that submissions to the collection are open until 30 June 2025. The editors are happy to answer any questions, and we look forward to receiving your submissions. Thank you to everyone who has submitted so far. Best wishes, Bryce, Marco, Dorette, and Christina. We are pleased to announce a special collection in Applied Categorical Structures honouring our friend and colleague, Bob Paré, on the occasion of this 80th birthday. Throughout his career Bob (Professor Emeritus and Adjunct Professor at Dalhousie University) has made several lasting contributions to category theory, including notable research in a broad range of subjects, such as double categories, higher categories, indexed categories, toposes and accessible categories. This collection will bring together contributions which honour the lasting impact Bob has made, and is making, in the category theory community. Submissions will be open from 1 October 2024 until 30 June 2025 at this link: https://link.springer.com/collections/dijeibfdbh All submissions on topics which celebrate Bob's work are welcome, including double categories, higher categories, indexed categories, toposes and accessible categories. The collection will be edited by four guest editors: - Bryce Clarke (Tallinn University of Technology) - Marco Grandis (University of Genoa) - Dorette Pronk (Dalhousie University) - Christina Vasilakopoulou (National Technical University of Athens) The publication process for this collection in Applied Categorical Structures differs from the traditional model for a special volume. Articles are published within whichever issue is open at the time, and concurrently published in the collection available at the above link. This helps papers to be published quickly, without having to wait for a whole issue to be ready, while still allowing all papers in the collection to be available in a single place. The editors are happy to answer any questions, and we look forward to receiving your submissions. Best wishes, Bryce, Marco, Dorette, and Christina. You're receiving this message because you're a member of the Categories mailing list group from Macquarie University. To take part in this conversation, reply all to this message. View group files<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Leave group<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Learn more about Microsoft 365 Groups<https://aka.ms/o365g>

1 0

Special Volume of MSCS in honor of Marek Zawadowski
by Chris Kapulkin 17 Mar '25

17 Mar '25

Dear Colleagues, We are honored to announce a special volume of the journal Mathematical Structures in Computer Science celebrating the work of Marek Zawadowski. Marek Zawadowski (1960-2024) was a mathematician at the University of Warsaw. He received his Ph.D. from the Université de Montréal in 1989 under the supervision of Gonzalo Reyes with the dissertation “Théorie de la descente pour les prétopos.” He made fundamental contributions to category theory, logic, and linguistics. He passed away unexpectedly in February 2024. This special volume is a celebration of Marek Zawadowski’s work and welcomes submissions on a broad range of topics, including: categorical logic, higher category theory, and linguistics. The volume will be edited by four guest editors: Pierre-Louis Curien (Université Paris Cité and Inria) Justyna Grudzińska (University of Warsaw) Chris Kapulkin (University of Western Ontario) Karol Szumiło (University of Warsaw) To submit your paper to the special volume, please go to https://mc.manuscriptcentral.com/mscs After starting a new submission, you will be asked (as part of Step 1) whether your manuscript is a candidate for a Special Issue; you should select “Tribute to Marek Zawadowski.” The editors will be happy to answer any questions at marek.zawadowski.memorial(a)gmail.com The submission deadline is March 31, 2025. If you are planning to submit a paper but are worried about making the deadline, please contact the editors at your earliest convenience. Best wishes, Chris Kapulkin For the Guest Editors You're receiving this message because you're a member of the Categories mailing list group from Macquarie University. To take part in this conversation, reply all to this message. View group files<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Leave group<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Learn more about Microsoft 365 Groups<https://aka.ms/o365g>

2 1

ItaCa Fest 2025
by Giacomo Tendas 17 Mar '25

17 Mar '25

Dear all, New year, new Fest! We are happy to announce that ItaCa Fest is back with its 6th edition. We will begin on April 15th at 3:00 PM Italian time. As usual, you can find all the relevant information (schedule, abstracts, and zoom link) at the following page: https://progetto-itaca.github.io/fests/fest25.html This year's speakers include: Z. Janelidze, Martins-Ferreira, Martínez, Lumsdaine, Ranchod, Donato, Schreiber, Sosnilo, Pratali, Bumpus, Van Belle, Vasilakopoulou, Fuji, Arkor, Taylor, Tarantino, Aldrovandi. See you online on April 15th! Best regards, The Scientific Committee. You're receiving this message because you're a member of the Categories mailing list group from Macquarie University. To take part in this conversation, reply all to this message. View group files<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Leave group<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.as…> | Learn more about Microsoft 365 Groups<https://aka.ms/o365g>

1 0