logical geometry

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.