• formal semantics of determiners/quantifiers (monotonicity, duality, comparatives)
• formal semantics of aspectual adverbials
• syntax and semantics of (subordinating) conjunctions and adverbs (connec tives)
• Logical Geometry (Aristotelian relations, Duality relations, negation)

Recent projects

• Pragmatic Reasoning with Scales, Spatial Terms and Incompatibility (01/03/2020 - 23/10/2024) - Promotor
• Re-Examining Dialect Syntax (REEDS) (01/01/2020 - 31/12/2024) - Co-promotor
• BITSHARE: Bitstring Semantics for Human and Artificial Reasoning (01/10/2019 - 30/09/2023) - Promotor

Recent publications

• launch Smessaert, H. (2025). Semantiek en pragmatiek. (Basisbegrippen Taalkunde). Leuven: ACCO. ISBN: 9789464677423.
• launch Smessaert, H., Demey, L. (2024). Introduction to Logical Geometry. Invited by Department of Logic. Department of Logic, Faculty of Philosopy, Xiamen University, China.
• launch Smessaert, H. (2024). Towards a typology of diagrams in Linguistics. Invited by Guangdong University of Foreign Studies. Guangdong University of Foreign Studies, Guangzhou, China.
• launch Smessaert, H., Demey, L. (2024). Introduction to Logical Geometry. Invited by Institute of Logic and Cognition. Sun Yat-sen University, Guangzhou, China.
• launch Nys, B., Smessaert, H. (sup.), Schaeken, W. (sup.), Demey, L. (cosup.) (2024). Pragmatic Reasoning with Scales, Spatial Terms and Incompatibility.
• launch Demey, L., Smessaert, H. (2024). Introduction to Logical Geometry (five day tutorial). Invited by FOLLI. Presented at the ESSLLI 2024: the 35th European Summer School in Logic, Language and Information, Leuven, 29 Jul 2024-09 Aug 2024.
• launch Demey, L., Smessaert, H. (2024). Aristotelian and Boolean Properties of the Keynes-Johnson Octagon of Opposition. Journal of Philosophical Logic, 53, 1265-1290. doi: 10.1007/s10992-024-09765-4 via repository
• launch Demey, L., Smessaert, H. with Demey, L. (corresp. author) (2024). Euler Diagrams, Aristotelian Diagrams and Syllogistics. In: J. Lemanski, M.W. Johansen, E. Manalo, P. Viana, R. Bhattacharjee, R. Burns (Eds.), DIAGRAMMATIC REPRESENTATION AND INFERENCE, DIAGRAMS 2024: vol. 14981, (111-128). Presented at the 14th International Conference on the Theory and Application of Diagrams (Diagrams), GERMANY, Univ Munster, Munster, 27 Sep 2024-01 Oct 2024. ISBN: 978-3-031-71290-6. doi: 10.1007/978-3-031-71291-3_9 via repository
• launch Roelandt, K., Smessaert, H. with Roelandt, K. (joint first author), Smessaert, H. (joint first author) (2023). Aristotelian Fragments and Subdiagrams for the Boolean Algebra B5. Axioms, 12 (6), Art.No. 604. doi: 10.3390/axioms12060604 via repository
• launch Smessaert, H., Demey, L. (2023). Aristotelian Diagrams for the Proportional Quantifier 'Most'. Axioms, 12 (3), Art.No. 236, 1-13. doi: 10.3390/axioms12030236 via repository