Documents by Grothendieck have been donated to the French national library BnF.
English summary:
https://phys.org/news/2023-09-hermit-eccentric-french-math-genius.html
French-language press release:
https://www.bnf.fr/sites/default/files/2023-09/CP_Entree_du_fonds_Grothendieck_bnf.pdf
Tens of thousands of pages of metaphysical musings in his post-disappearance period have been donated by his family. One is La Clé [Clef] du Songes, which is a known work, but the other is Réflexions sur la Vie et le Cosmos, a 41-volume work (!!!). This might have some interesting bits for mathematicians, most particularly
* "Géométrie élémentaire schématique" (1992), prolongeant les travaux de l’auteur en géométrie algébrique qui ont fait sa renommée [extending the author's work in algebraic geometry for which he is renowned]
Note the date! He had only left society the previous year, having just stopped writing Les Dérivateurs, which is a very serious mathematical work.
@b4c50e1b I'm pretty sure we did :-) We purposely said something like that using infinity-categorical universal properties is not helpful for physics, not the kind of physics that wants to actally draw a graph and calculate things like numbers.... Though maybe we had to trim some of this because a past referee said we explained things too well in the intro, making it seem like a survey paper.
"Le mathématicien est engagé dans la poursuite d'un rêve sans fin, comprendre la structure de tout chose."
—Charles Ehresmann
[The mathematician is engaged in the pursuit of a never-ending dream: to understand the structure of everything.]
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