Verrières-de-Joux. 30 ans plus tard, la randonnée de la Bourbaki retrouve son premier parcours

#randonnée #VTT #cyclisme #vélo #tourisme #bourbaki
https://www.estrepublicain.fr/culture-loisirs/2023/08/30/30-ans-plus-tard-la-randonnee-de-la-bourbaki-revit-son-premier-parcours

@seriouslyfab

...mais est il prouvé que tous ces #zéros sont bien zégaux ? 🤔

Il me semble que #love > #nil, et que #nought vaut mieux qu'#oh. 😉

Comme disait #Devos, avec #rien on peut faire quelque chose — en le multipliant : pour trois fois rien, on peut s'acheter des trucs, et pour pas cher !

(PS: on écrit "oh" pour le 2, le 4 aux US c'est plutôt "naught", et permet de se passer du "point" à l'oral: "nought four five")

Et
6. (a) goose egg - la bulle, en #argot #potache.

#Bourbaki

The name for the algebraic structure consisting of a set \(A\) equipped with a binary operation \(f\colon A^2\to A\) which is not assumed to be commutative, associative, etc. has an interesting history. As far as I can tell, this sort of algebra was originally known as a "groupoid", and you can find recent literature using the term in that way. However, Nicolas Bourbaki called a set with a single binary operation a "magma" in his _Éléments de mathématique_ and this name came to be used when there might be confusion with the newer topological use of "groupoid" to mean a category whose morphisms are all invertible. A third contender is "binar". I don't know the history of this one but it seems reasonable to me.

I prefer "magma" myself. I don't know what a "lava" or a "volcano" should be nor have I had the audacity to try to name something like this in the literature. One reason I prefer "magma" is that I can talk about a set \(A\) equipped with a single \(n\)-ary operation \(f\colon A^n\to A\) as an "\(n\)-ary magma" (or just "\(n\)-magma" or even "magma").

#algebra #UniversalAlgebra #topology #bourbaki #terminology

Come sempre in questa giornata, una riflessione firmata Nicoletta #Bourbaki.
https://www.wumingfoundation.com/giap/2021/08/nascita-della-foibologia/

#Presentation

N. Bourbaki is now on Mastodon.

This account will mostly serve to announce the Bourbaki Friday seminars, the N. Bourbaki seminars, as well as to inform of the publication of new volumes of the Elements of mathematics

#bourbaki

http://www.bourbaki.fr

I just uploaded some notes (in French) for my last Friday “Séminaire Bourbaki du vendredi” talk on the Weil conjectures (history, approaches, generalizations): I recounted the history of the conjectures by Weil on the number of solutions of polynomial equations in finite fields, and some of the approaches that have been proposed to solve them.

https://webusers.imj-prg.fr/~antoine.chambert-loir/publications/exposes/weil-20221118.pdf

#WeilConjectures #NumberTheory #Bourbaki

Je viens de mettre en ligne une rédaction de mon exposé du “Séminaire Bourbaki du vendredi” (vendredi dernier) sur les conjectures de Weil (histoire, approches, généralisations).

https://webusers.imj-prg.fr/~antoine.chambert-loir/publications/exposes/weil-20221118.pdf

#ConjecturesDeWeil #ThéorieDesNombres #Bourbaki

RT @LEstRepHtDoubs@twitter.com

En images- Une cérémonie en comité restreint dans le Haut-Doubs pour le 150e anniversaire de la bataille des #Bourbaki.
http://estrepublicain.fr/societe/2021/02/01/une-ceremonie-en-comite-restreint-pour-le-150e-anniversaire-de-la-bataille-des-bourbaki

🐦🔗: https://twitter.com/LEstRepHtDoubs/status/1356204759175327746