Thursday 21. 5. 2026 - Satuday 23. 5. 2026
conference | Czech Academy of Sciences, Národní 3, Prague
Proof in Natural Philosophy from Antiquity to the Early Modern Period
Organized by the Centre for Classical Studies
Detailed information
Thursday 21
9:15–13:00 chair Pavel Gregorić
Klaus Corcilius, The eikos logos as a sort of proof in Plato’s Timaeus
Hynek Bartoš & Vojtěch Linka, The construction of evidence in early Greek medicine
R. J. Hankinson, Mathematics and physics in Aristotle’s theory of the ether
15:00–17:30 chair István Bodnár
Lucas Angioni, Explanation and hoti-refinement in Aristotle’s Incessu Animalium
Matyáš Havrda, Proof and experiment in Galen
Friday 22
9:15–13:00 chair Vojtěch Hladký
David Bronstein, Aristotle on demonstration and necessity: From Themistius to Zabarella
Jacqueline Feke, Proclus’ excoriation of the eccentric and epicyclic models of planetary motion
Riccardo Strobino, Void check: On the logic of necessarily empty terms and indirect proof in Avicenna’s natural philosophy
15:00–17:30 chair Matjaž Vesel
Elżbieta Jung, Mathematics and logic as methods of doing natural science by Richard Kilvington and his followers: Oxford Calculators
Sylvain Roudaut, Proof across disciplines: The use of mathematical principles in the medieval science of weights
Saturday 23
9:15–13:00 chair Miroslav Hanke
Fabrizio Bigotti, Visualisation as proof: The use of schemes and diagrams in medical theory (1300–1500)
Dana Jalobeanu, Bacon’s induction and the construction of “science”
Matjaž Vesel, Galileo Galilei’s “necessary demonstrations”
15:00–17:30 chair Fabrizio Bigotti
Sophie Roux, Crucial experiments and the reductio ad absurdum in the 17th century
Ladislav Kvasz, On Newton’s proof of the law of gravity from Kepler’s laws. The debate from Pierre Duhem to Bernard Cohen and Steffen Ducheyne
The conference is supported by a grant from the Jan Amos Komenský Operational Programme of the Ministry of Education, Youth and Sports, CZ.02.01.01/00/23_025/0008711.

