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Future events

628, Olympe de Gouges (09:30-17:30) — org. Karine Chemla
Mia Joskowicz,
Dotted Lines in Early Modern Editions of Euclid’s Elements
Christine Proust,
Reading a mathematical text at different scales, or how to navigate a series of problems (Mesopotamia, c. 1900 BCE)
Florence Bretelle,
Medical Book Titles in Chinese History: Epistemic Values and Textual Genres over Time
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596, Olympe de Gouges (09:00-13:00)

The Interdisciplinary seminar in History, Philosophy and Sociology of Sciences (DISc) is a collaborative space for PhD students of the SPHERE laboratory. We question and discuss methodological approaches used in history, philosophy, epistemology and sociology of sciences. Each session is articulated around one theme related to the works of PhD students in the laboratory.

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Observatoire de Paris, salle du conseil (14:00-17:00)
周 序林Xùlín Zhǒu,
Methods for measuring a rectangular field in four excavated mathematical books from ancient China
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Seminars and events I organise

Ongoing seminars

Reading Mathematical and Astronomical Texts

with Agathe Keller

Description
Each session of the Reading Ancient Mathematical Texts Seminar opens with the short presentation of a primary source and the mathematical problems it raises, followed by the reading of this source, provided with an edition and a translation. One reading typically lasts 3 hours, mostly filled with constant exchanges where any naive question is welcomed. This allows us to think about the linguistic composition of the text, its philology, etc. I believe the value of this seminar is mostly to un-understand (that is, to “durstand”) the texts, and to bring to light many unsuspected questions they hold. Three hours is never enough to read large chunks of text, but taking this time always brings very rich and inspiring discussions. This richness comes, not only from the intrinsic value of the sources presented, but also by the diversity of participants, with both experienced researchers and beginner students who can bring their expertise based on diverse sources, and who always invite us to look at the texts with new and original perspectives.
Upcoming sessions

Oct 29, 2026
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周 序林Xùlín Zhǒu, « Methods for measuring a rectangular field in four excavated mathematical books from ancient China »

Nov 10, 2026
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Mia Joskowicz, « Reworking Euclid’s Irrationals at the Turn of the Seventeenth Century »

Dec 16, 2026
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Catherine Ledesert, « Oresme's Questions on Sacrobosco's De Spera »

Jan 28, 2027
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王 浩霖(Haolin Wang), « Iterated positions in squaring and cubing, based on the Līlāvatīvivaraṇam »

Feb 25, 2027
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Carole Hofstetter, « Degrees and Their Subdivisions in Pachymeres' Astronomy (Syntagma.4) »

Mar 17, 2027
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徳武 太郎 (Taro Tokutake), « Reading Śrīdhara’s Collection of Three Hundred (Triśatī): Multiple Manuscripts towards a New Critical Edition »

Apr 22, 2027
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Matthieu Husson, « Verse and prose in the computation of square roots: a reading of John of Murs Quadripartitum numerorum (France, c. 1343) »

May 13, 2027
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Émilie Villey, « To be announced »

Jun 24, 2027
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To be announced, « To be announced »

Past events
2023–2024 2024–2025 2025–2026

Past events

org. Thomas Berthod, Clément Cartier, Simon Gentil

This day was an occasion to gather contributions on the topic of diagrams and procedures in mathematics, spanning from 7th-century Arabic astrolabes until 21st-century cluster theory developed by Lauren Williams, Sergey Fomin and Andrei Zelevinsky's.

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org. Clément Cartier

As part of the History of Science, History of Texts seminar, this day was an occasion to focus on the role of readers towards the texts, exploring both linguistics and philological approaches.

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org. Safia Bennabi, Clément Cartier, Maya Raoulot-Dinh

The Young Researchers' Days of the HiDiM network (History and Didactic of Mathematics) gathered (pre-)PhD students and young researchers who worked both in history or in didactic of mathematics.

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DISc seminar

Paris, 2024–2025
org. Clément Cartier, Natacha Demoule, 王 浩霖 (Haolin Wang)

The Interdisciplinary seminar in History, Philosophy and Sociology of Sciences (DISc) is a collaborative space for PhD students of the SPHERE laboratory. We question and discuss methodological approaches used in history, philosophy, epistemology and sociology of sciences. Each session is articulated around one theme related to the works of PhD students in the laboratory.

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Paris, 2023–2024

The Doctoral Day of the doctoral school 623 gave PhD students an opportunity to present their research topics and to discuss methodological issues they meet during their thesis. It engages the different disciplinary approaches gathered in our doctoral school (history of sciencees, philosophy, didactic, education sciences, sociology, etc.).

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