# talks at international conferences

- Demey, Lorenz (October 2022).

'Leonardi.DB: A Database of Aristotelian Diagrams'. Talk at the*Logica Universalis Webinar*, Virtual, October 19, 2022. - Demey, Lorenz (September 2022).

'From Aristotelian Diagrams to Logical Geometry'. Invited inspirational talk at the Graduate Symposium of*Diagrams 2022: The 13th International Conference on the Theory and Application of Diagrams*, Rome (Italy), September 13-17, 2022. - Demey, Lorenz (September 2022).

'Two Perspectives on Existential Import'. Talk at the*7th World Congress on the Square of Opposition*, Leuven (Belgium), September 9-13, 2022. - Demey, Lorenz & Hans Smessaert (September 2022).

'A Database of Aristotelian Diagrams: Empirical Foundations for Logical Geometry'. Talk at*Diagrams 2022: The 13th International Conference on the Theory and Application of Diagrams*, Rome (Italy), September 13-17, 2022. - Demey, Lorenz & Hans Smessaert (September 2022).

'From Euler Diagrams to Aristotelian Diagrams'. Talk at*Diagrams 2022: The 13th International Conference on the Theory and Application of Diagrams*, Rome (Italy), September 13-17, 2022. - Frijters, Stef (September 2022).

'Aristotelian Diagrams for the Modal Logic of All and Only'. Talk at the*7th World Congress on the Square of Opposition*, Leuven (Belgium), September 9-13, 2022. - Frijters, Stef (September 2022).

'Generalizing the Square'. Talk at the*7th World Congress on the Square of Opposition*, Leuven (Belgium), September 9-13, 2022. - Frijters, Stef (September 2022).

'Generalizing Aristotelian Relations and Diagrams'. Talk at*Diagrams 2022: The 13th International Conference on the Theory and Application of Diagrams*, Rome (Italy), September 13-17, 2022. - Roelandt, Koen & Hans Smessaert (September 2022).

'Aristotelian subdiagrams in the Boolean Algebras B4 and B5'. Talk at the*7th World Congress on the Square of Opposition*, Leuven (Belgium), September 9-13, 2022. - Smessaert, Hans & Lorenz Demey (September 2022).

'Aspect Shifting in Aristotelian Diagrams'. Talk at*Diagrams 2022: The 13th International Conference on the Theory and Application of Diagrams*, Rome (Italy), September 13-17, 2022. - Smessaert, Hans & Lorenz Demey (July 2022).

'On the Ubiquity of Symmetry in Logical Geometry'. Talk at the*12th SIS-Symmetry Congress*, Porto (Portugal), July 11-16, 2022. - Demey, Lorenz (June 2022).

'From Existential Import in Syllogistics to Translations between Modal Logics'. Invited talk at the*Argument and Syllogism workshop*, Santiago (Chile)/virtual, June 23, 2022. - Demey, Lorenz & Jens Lemanski (September 2021).

'Schopenhauer's Partition Diagrams and Logical Geometry'. Talk at*Diagrams 2021: The 12th International Conference on the Theory and Application of Diagrams*, Virtual Conference, September 28-30, 2021. - Smessaert, Hans; Atsushi Shimojima & Lorenz Demey (September 2021).

'On the Cognitive Potential of Derivative Meaning in Aristotelian Diagrams'. Talk at*Diagrams 2021: The 12th International Conference on the Theory and Application of Diagrams*, Virtual Conference, September 28-30, 2021. - Vignero, Leander (September 2021).

'Combining and Relating Aristotelian Diagrams'. Talk at*Diagrams 2021: The 12th International Conference on the Theory and Application of Diagrams*, Virtual Conference, September 28-30, 2021. - Demey, Lorenz (March 2021).

'Boolean Considerations on John Buridan's Octagons of Oppositions'. Talk at the*Medieval Logic and Ontology (MeLO) seminar*, Leuven (Belgium). (Virtual seminar due to the Covid-19 pandemic.) - Demey, Lorenz & Hans Smessaert (August 2020).

'Using Multigraphs to Study the Interaction Between Opposition, Implication and Duality Relations in Logical Squares'. Talk at*Diagrams 2020: The 11th International Conference on the Theory and Application of Diagrams*, Virtual Conference, August 24-28, 2020. - Smessaert, Hans; Atsushi Shimojima & Lorenz Demey (August 2020).

'Free Rides in Logical Space Diagrams versus Aristotelian Diagrams'. Talk at*Diagrams 2020: The 11th International Conference on the Theory and Application of Diagrams*, Virtual Conference, August 24-28, 2020. - Roelandt, Koen & Hans Smessaert (November 2019).

'On the Role of Central Symmetry in the 3D Visualisation of the Boolean Algebra B5'. Talk at*Symmetry: Art and Science, 2019 - 11th Congress and Exhibition of SIS*. Kanazawa (Japan), November 25-30, 2019. - Termont, Wouter; Lorenz Demey & Hans Smessaert (May 2019).

'First Steps Toward a Digital Database of Aristotelian Diagrams'. Poster presentation at*DATeCH 2019: Digital Access to Textual Cultural Heritage*. Brussels (Belgium), May 8-10, 2019. - Demey, Lorenz (November 2018).

'A Guided Tour of Logical Geometry, Based on the Keynes-Johnson Octagon'. Keynote talk at the*6th World Congress on the Square of Opposition*, Crete (Greece), November 1-5, 2018. - Demey, Lorenz & Hans Smessaert (November 2018).

'Aristotelian and Duality Relations beyond the Square of Opposition'. Talk at the*6th World Congress on the Square of Opposition*, Crete (Greece), November 1-5, 2018.

=> slides available in PDF format. - Smessaert, Hans & Lorenz Demey (November 2018).

'Aristotelian Diagrams for the Proportional Quantifier*Most*. Talk at the*6th World Congress on the Square of Opposition*, Crete (Greece), November 1-5, 2018.

=> slides available in PDF format. - Demey, Lorenz & Hans Smessaert (September 2018).

'Ordering Relations, Partitions and Aristotelian Diagrams'. Talk at the*Logic Now and Then 4 (LNAT4)*, Brussels (Belgium), September 20, 2018.

=> slides available in PDF format. - Demey, Lorenz (June 2018).

'Writing and Drawing in Logic - The Case of Aristotelian Diagrams'. Talk at the*Workshop on Practices of Writing and Reading in Logic*, affiliated workshop of UNILOG 2018, Vichy (France), June 23-24, 2018.

=> abstract available in PDF format. - Demey, Lorenz & Hans Smessaert (June 2018).

'Aristotelian and Duality Relations Beyond the Square of Opposition'. Talk at*Diagrams 2018: the 10th International Conference on the Theory and Application of Diagrams*, Edinburgh (UK), June 18-22, 2018.

- Demey, Lorenz (April 2018).

'The Role of Aristotelian Diagrams in Scientific Communication'. Talk at the*8th Visual Learning Conference*, Budapest (Hungary), April 26-28, 2018.

=> abstract available in PDF format. - Demey, Lorenz & Hans Smessaert (April 2018).

'Aristotelian Diagrams: the Forgotten Icons of Logic'. Talk at the*Workshop on Scholarly Forgetting in the Humanities*, Helmstedt (Germany), April 19-21, 2018. - Demey, Lorenz (September 2017).

'The Logical Geometry of Russell's Theory of Definite Descriptions'. Poster presentation at*PLM4: the Fourth Philosophy of Language and Mind Conference*, Bochum (Germany), September 21-23, 2017.

=> poster available in PDF format. - Smessaert, Hans (November 2016).

'Aristotelian and Duality Relations with Proportional Quantifiers'. Talk at the*Fifth World Congress on the Square of Opposition*, Easter Island (Chile), November 11-15, 2016.

=> abstract / slides available in PDF format. - Demey, Lorenz & Hans Smessaert (August 2016).

'The Interaction between Logic and Geometry in Aristotelian Diagrams'. Talk at*Diagrams 2016: The 9th International Conference on the Theory and Application of Diagrams*, Philadelphia, PA (USA), August 7-10, 2016.

=> slides available in PDF format. - Smessaert, Hans & Lorenz Demey (August 2016).

'Visualising the Boolean Algebra B_4 in 3D'. Poster presentation at*Diagrams 2016: The 9th International Conference on the Theory and Application of Diagrams*, Philadelphia, PA (USA), August 7-10, 2016.

=> poster available in PDF format. - Demey, Lorenz (May 2016).

'The Continuity between Logic and Metalogic from the Perspective of Logical Geometry'. Talk at the*Language and Metalanguage, Logic and Metalogic – Revisiting Tarski's Hierarchy*workshop, Louvain-la-Neuve (Belgium), May 19-20, 2016.

=> slides available in PDF format. - Smessaert, Hans (April 2016).

'Aristotelian and Duality Relations with Proportional Quantifiers'. Talk at the*KrowFest*workshop, Brussels (Belgium), April 1, 2016.

=> slides available in PDF format. - Demey, Lorenz & Hans Smessaert (November 2015).

'Shape Heuristics in Aristotelian Diagrams'. Talk at the*Shapes 3.0*workshop, Larnaca (Cyprus), November 2, 2015

=> slides available in PDF format. - Demey, Lorenz (November 2015).

'Interactively Illustrating the Context-Sensitivity of Aristotelian Diagrams'. Talk at the*9th International and Interdisciplinary Conference on Modeling and Using Context (CONTEXT)*, Larnaca (Cyprus), November 2-6, 2015.

=> slides available in PDF format. - Smessaert, Hans & Lorenz Demey (August 2015).

'Aristotelian Diagrams for Multi-Operator Formulas in Avicenna and Buridan'. Talk at the*15th Congress of Logic, Methodology and Philosophy of Science (CLMPS)*, Helsinki (Finland), August 3-8, 2015.

=> abstract / slides available in PDF format. - Demey, Lorenz & Hans Smessaert (August 2015).

'Metalogical Decorations of Logical Diagrams'. Talk at the*15th Congress of Logic, Methodology and Philosophy of Science (CLMPS)*, Helsinki (Finland), August 3-8, 2015.

=> abstract / slides available in PDF format. - Smessaert, Hans & Lorenz Demey (February 2015).

'One-sided versus two-sided readings of*many*and*few*. Talk at*Logic Now and Then 3 (LNAT3)*, Brussels (Belgium), February 5, 2015.

=> abstract / slides available in PDF format. - Smessaert, Hans & Lorenz Demey (August 2014).

'Logical and Geometrical Complementarities between Aristotelian Diagrams'. Talk at*Diagrams 2014: The 8th International Conference on the Theory and Application of Diagrams*, Melbourne (Australia), July 28 - August 1, 2014

=> slides available in PDF format. - Demey, Lorenz & Hans Smessaert (August 2014).

'The Relationship between Aristotelian and Hasse Diagrams'. Talk at*Diagrams 2014: The 8th International Conference on the Theory and Application of Diagrams*, Melbourne (Australia), July 28 - August 1, 2014.

=> slides available in PDF format. - Smessaert, Hans & Lorenz Demey (May 2014).

'The Unreasonable Effectiveness of Bitstrings in Logical Geometry'. Talk at the*Fourth World Congress on the Square of Opposition*, Rome/Vatican (Italy), May 5-9, 2014.

=> slides available in PDF format. - Demey, Lorenz & Hans, Smessaert (May 2014).

'Algebraic and Cognitive Aspects of Presenting Aristotelian Diagrams'. Talk at the*Fourth World Congress on the Square of Opposition*, Rome/Vatican (Italy), May 5-9, 2014.

=> slides available in PDF format. - Demey, Lorenz (May 2014).

'Logical Geometries and Information in the Square and its Extensions'. Talk at the*Fourth World Congress on the Square of Opposition*, Rome/Vatican (Italy), May 5-9, 2014.

=> slides available in PDF format. - Smessaert, Hans (May 2014).

'The Logical Geometry of the Rhombic Dodecahedron of Oppositions'. Talk at the*Fourth World Congress on the Square of Opposition*, Rome/Vatican (Italy), May 5-9, 2014.

=> slides available in PDF format. - Smessaert, Hans (November 30, 2013).

'La géométrie logique du dodécaèdre rhombique des oppositions'. Talk as invited spreaker at the*Colloque International sur Le carré et ses extensions: Aspects théoriques, pratiques et historiques*, Tunis (Tunisia), November 29-30, 2013.

- Smessaert, Hans (July 4, 2012).

'Boolean Differences between two Hexagonal Extensions of the Logical Square of Oppositions'. Talk at*Diagrams 2012: the 7th International Conference on the Theory and Application of Diagrams*, Canterbury (UK), July 2-6, 2012.

- Demey, Lorenz (July 2012).

'Algebraic Aspects of Duality Diagrams'. Poster presentation at*Diagrams 2012: the 7th International Conference on the Theory and Application of Diagrams*, Canterbury (UK), July 2-6, 2012.

- Demey, Lorenz & Hans Smessaert (June 3, 2012).

'Information in the Square of Oppositions'. Talk at*Trends in Logic XI. Studia Logica International Conference*, Bochum (Germany), June 3-5, 2012.

- Demey, Lorenz (December 22, 2011).

'Group Theory and Duality Diagrams'. Talk at*Logic Now and Then 2 (LNAT2)*, Brussels (Belgium), December 21-22, 2011.

- Smessaert, Hans (December 22, 2011).

'Why some Hexagons of Opposition are Fragments: Sesmat-Blanché vs Sherwood-Czeżowski'. Talk at*Logic Now and Then 2 (LNAT2)*, Brussels (Belgium), December 21-22, 2011.

- Demey, Lorenz (September 2011).

'An Algebraic Perspective on Duality in Logic and Language'. Poster presentation at*Semantics and Philosophy in Europe 4 (SPE 4)*, Bochum (Germany), September 26 - October 1, 2011.

- Demey, Lorenz (July 23, 2011).

'Structures of Oppositions in Public Announcement Logic. And: Some Algebraic Remarks on Duality'. Talk at the*Symposium on the Logic of Opposition*(affiliated symposium at*CLMPS14: 14th Congress of Logic, Methodology and Philosophy of Science*). Nancy (France), July 19-26, 2011.

- Smessaert, Hans (July 23, 2011).

'On the Hybrid Nature of the Aristotelian Square and the Sesmat-Blanché Hexagon'. Talk at the*Symposium on the Logic of Opposition*(affiliated symposium at*CLMPS14: 14th Congress of Logic, Methodology and Philosophy of Science*). Nancy (France), July 19-26, 2011.

- Smessaert, Hans (June 20, 2010).

'The Classical Aristotelian Hexagon versus the Modern Duality Hexagon'. Talk at the*Second World Congress on the Square of Opposition*, Corte (Corsica, France), June 17-20, 2010.

- Demey, Lorenz (June 20, 2010).

'Reversed Squares of Opposition in PAL and DEL'. Talk at the*Second World Congress on the Square of Opposition*, Corte (Corsica, France), June 17-20, 2010.

- Smessaert, Hans (June 2, 2007).

'On the 3D Visualisation of Logical Relations'. Keynote talk at the*First World Congress on the Square of Opposition*, Montreux (Switzerland), June 1-3, 2007.