The 21st Trends in Logic international conference took place at Ruhr University Bochum from December 6-December 8, 2021 under the title “Frontiers of connexive logic”, see https://sites.google.com/view/trendsinlogicxxi/home.
The conference was organized by Hitoshi Omori and Heinrich Wansing. Invited lectures were given by:
Libor Běhounek (Ostrava) "On the connexivity of fuzzy counterfactuals"
Paul Egré (Paris) "Trivalent connexive logics and relevance"
Andrea Iacona (Turin) "On the logical form of concessive conditionals"
Marko Malink (New York) "The Origins of Conditional Logic: Theophrastus on Hypothetical Syllogisms"
Jacek Malinowski (Warsaw) "A Variety of Connexive Logics via Relating Semantics"
Edwin Mares (Wellington) "Relevant Semantics for Connexive Logics
George Metcalfe (Bern) "Substructural logics with minimally true tautologies"
Francesco Paoli (Cagliari) "Intuitionistic logic is a connexive logic"
Niki Pfeifer (Regensburg) "Two approaches to validate connexive principles: conditional events and conditional probability"
Claudio Pizzi (Siena) "An introduction to Boethian logics"
Hans Rott (Regensburg) "Difference-making conditionals and connexivity"
There were the following talks in the Logic and Epistemology colloquium:
November 2021
On November 28 and 29, 2021 the workshop Model Theory of Non-classical Logics: Diversity and its Invariants took place at Ruhr University Bochum, see https://sites.google.com/view/workshopmtnldi/home. The workshop was organized by Grigory Olkhovikov.
Speakers:
The third Non-Classical Modal and Predicate Logics conference took place at Ruhr University Bochum from November 23-November 26, 2021, see https://sites.google.com/view/ncmpl2021/home. The invited speakers were:
Marta Bilkova (Prague)
Liron Cohen (Tel Aviv)
Oystein Linnebo (Oslo) (Erlangen) (New York)
Tadeusz Litak (Erlangen)
Carles Noguera (Prague)
Graham Priest (New York)
Valentin Shehtman (Moscow)
Zach Weber (Otago)
There were the following talks in the Logic and Epistemology colloquium:
October 2021
Heinrich Wansing joined the Program Committee of the Trends in Logic XXII conference "Strong and Weak Kleene logics", Cagliari, 2022.
There were the following talks in the Logic and Epistemology colloquium:
September 2021
Heinrich Wansing chaired the Logic Section of the XXV. Congress of the German Society for Philosophy, September 5th – 9th, 2021, Friedrich-Alexander-Universität Erlangen-Nürnberg, see https://dgphil2020.fau.de/en/programme/sections/
Moreover, he joined the Program Committee of the conference Non-Classical Logics. Theory and Applications 2022, Łódź (Poland).
Sara Ayhan co-organized the conference PHDS IN LOGIC XII, September 8 - 10, 2021, Freie Universität Berlin (Germany), and virtually.
August 2021
The special issue on negation of Logical Investigations (Moscow) appeared, see https://logicalinvestigations.ru/issue/view/33?lang=en. It is dedicated to the memory of Prof. J. Michael Dunn and edited by Heinrich Wansing, Grigory Olkhovikov, Hitoshi Omori.
The posters for NCMPL 2021 and Trends in Logic XXI were printed:
July 2021
On July 12, Christopher Badura very successfully defended his PhD thesis Logic(s) of Imagination. The reviewers were Prof. Franz Berto (St Andrews) and Prof. Heinrich Wansing. Congratulations Christopher!
The (first) Łódź-Bochum Workshop on Logic took place on July 2nd and 3rd, 2021
Speakers:
Sara Ayhan (Bochum)
Andrzej Indrzejczak (Łódź)
Janusz Kaczmarek (Łódź)
Satoru Niki (Bochum)
Marek Nowak (Łódź)
Hitoshi Omori (Bochum)
Yaroslav Petrukhin (Łódź)
Daniel Skurt (Bochum)
Heinrich Wansing (Bochum)
Michał Zawidski (Łódź)
Heinrich Wansing joined the Program Committee of the conference Advances in Modal Logic 2022, to be held in Rennes (France).
June 2021
There were the following talks in the Logic and Epistemology colloquium:
10.6 Marcus Rossberg (Connecticut), "An Inferentialist Redundancy Theory of Truth"
17.6 Andrew Tedder (Bochum), "General Neighbourhood Semantics for First Order Relevant Logic"
24.6 Kai Wehmeier (Irvine), "Is Classical Predicate Logic Extensional?"
May 2021
There were the following talks in the Logic and Epistemology colloquium:
6.5 Graham Priest (New York & Melbourne & Bochum), "Substructural Solutions to the Semantic Paradoxes: a Dialetheic Perspective" (Part I)
20.5 Grigory Olkhovikov (Bochum), "A Lindström result for bi-intuitionistic propositional logic"
April 2021
The website and call for papers for Non-Classical Modal and Predicate Logics, Bochum, November 23-November 26, 2021 has gone online.
Heinrich Wansing has been granted an ERC 2020 Advanced Grant for a project on Contradictory Logics: A Radical Challenge to Logical Orthodoxy
see https://forschung.ruhr-uni-bochum.de/en/inconsistent-logics
https://erc.europa.eu/sites/default/files/document/file/erc-2020-adg-results-sh.pdf
https://erc.europa.eu/sites/default/files/document/file/erc-2020-adg-statistics.pdf
There were the following talks in the Logic and Epistemology colloquium:
April 15: Evgeny Borisov (Tomsk), "A Logic for Cross-world Predication"
April 22: Davide Fazio (Cagliari), "On Paraconsistent Belief Revision from an algebraic perspective"
April 29: Satoru Niki (Bochum), "Revisiting justification semantics for intuitionistic logic"
Heinrich Wansing joined the program committee of the Twelfth Smirnov Readings in Logic to be held on 24-26 June 2021.
March 2021
Heinrich Wansing joined the program committee of LOGICA 2021, http://logika.flu.cas.cz/logica.
February 2021
There were the following talks in the Logic and Epistemology colloquium:
February 4: Allard Tamminga (Greifswald) "Expressivity Results for Deontic Logics of Collective Agency"
February 11: Grigory Olkhovikov (Bochum) "Lindström Theorems in Modal and Non-Classical Logics"
January 2021
There were the following talks in the Logic and Epistemology colloquium:
January 7: Graham Priest (CUNY & Melbourne & Bochum) "Reflections on Orlov"
January 14: Hitoshi Omori (Bochum) "An alternative semantics for infectious logics"
January 21: Lisa Michajlova (Bochum) "Combining Logic & Probability - A Probabilistic Argumentation Framework"
January 28: Daniel Skurt (Bochum) "Neighbourhood semantics for FDE-based modal logics"
The inclusion of a quote from Rudolf Carnap notwithstanding, the following video is among things that make me not celebrate the "World Logic Day":https://www.youtube.com/watch?v=uJJZLQsukZY&t=36s