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- Mathematical Incompleteness Results in First-Order Peano Arithmetic: A Revisionist View of the Early History
- Judgements and Truth. Essays in Honour of Jan Woleński
- On the (In)Dependence of the Peano Axioms for Natural Numbers
- N. Germann and S. Harvey editors. The Origin and Nature of Language and Logic: Perspectives in Medieval Islamic, Jewish, and Christian Thought, Turnhout: Brepols, 2020, xiii + 422 pp. €71,46, ISBN 978-2503588926
- Categorical Propositions and Existential Import: A Post-modern Perspective
- Cantor’s Abstractionism and Hume’s Principle
- Suppose and Tell: The Semantics and Heuristics of Conditionals
- Regensburg Colloquy of 1601: Its Disputation Method and the German Second Scholastic Disputation Handbooks
- Advances in Experimental Philosophy of Logic and Mathematics
- Aristoteles – Schopenhauer – Erdmann. Basistexte zur Eristik
- Arthur N. Prior on ‘Unquestionably the Best Logical Symbolism for Most Purposes’
- John Corcoran
- Analysis in Prior Analytics I.45
- Hegel’s Interpretation of the Liar Paradox
- The Structure and Extension of (Proto)Type Concepts: Husserl’s Correlationist Approach
- An Inquiry on Fakhr al-Dīn Rāzī’s Authorship of Al-Manṭiq al-kabīr (MS Aḥmad iii, no. 3401)
- Dialectic after Plato and Aristotle
- A Pragmatic-Semiotic Defence of Bivalence
- Immediate Negation
- On the Methods of Constructing Hilbert-type Axiom Systems for Finite-valued Propositional Logics of Łukasiewicz
- Time and Indexicality in Buridan’s Concept of Logical Consequence
- The Consistency of a Certain Medieval-Like Solution to the Liar Paradox. Proof Given by Bolesław Sobociński
- On Reading Leśniewski
- Wittgenstein and Formal Semantics: A Case Study on the Tractarian Notions of Truth-Conditions and Compositionality
- ‘Qinghua School of Logic’: Mathematical Logic at Qinghua University in Peking, 1926–1945
- Fregesche Variationen. Essays zu Ehren von Christian Thiel
- In What Sense is J.N. Findlay the Founding Father of Tense-logic?
- The Deduction Theorem (Before and After Herbrand)
- On Infinitesimals and Indefinitely Cut Wooden Sticks: A Chinese Debate on ‘Mathematical Logic’ and Russell’s Introduction to Mathematical Philosophy from 1925
- Paraconsistent Logic: Consistency, Contradiction and Negation
- Reflections on Orlov
- The Aftermath of Syllogism. Aristotelian Logical Argument from Avicenna to Hegel
- Susan Stebbing’s Logical Interventionism
- Intuition et idéalités. Phénoménologie des objets mathématiques
- Wittgenstein on Logic as The Method of Philosophy. Re-examining the Roots and Development of Analytic Philosophy
- Saving the Square of Opposition
- Oral Disputation in the Gymnasium Logicum by Bartholomäus Keckermann and Dependent Seventeenth Century Tracts
- Revisiting the Exegetical Tradition of Galen’s Prologue to the Art of Medicine before Leoniceno: Logic, Teaching, and Didactics in Pietro Torrigiano’s Plusquam commentum