Tag: Serre

  • Bourbaki, Brassens, Hula Hoops and Coconuts

    More than ten years ago, when I ran a series of posts on pre-WW2 Bourbaki congresses, I knew most of the existing B-literature. I’m afraid I forgot most of it, thereby missing opportunities to spice up a dull post (such as yesterday’s). Right now, I need facts about the infamous ACNB and its former connection […]

  • From Weil’s foundations to schemes

    Last time, we’ve seen that the first time ‘schemes’ were introduced was in ‘La Tribu’ (the internal Bourbaki-account of their congresses) of the May-June 1955 congress in Chicago. Here, we will focus on the events leading up to that event. If you always thought Grothendieck invented the word ‘schemes’, here’s what Colin McLarty wrote: “A…

  • Le Guide Bourbaki : La Ciotat (2)

    Rereading the Grothendieck-Serre correspondence I found a letter from Serre to Grothendieck, dated October 22nd 1958, which forces me to retract some claims from the previous La Ciotat post. Serre writes this ten days after the second La Ciotat-congress (La Tribu 46), held from October 5th-12th 1958: “The Bourbaki meeting was very pleasant; we all…

  • Le Guide Bourbaki : Murol(s)

    The preparations for the unique Bourbaki-congress in Murols, start already in La Tribu 32 (fall 1953). On page 3: “Summer 54: To suit Phileas Chevalley, Sammy Fogg and eventual Mexicans and Colombians, this Congress will be held from August 17 to 30. Samuel will look for a hotel in Auvergne, but everyone is asked to…

  • The (somewhat less) Secret Bourbaki Archive

    It has been many, many years since I’ve last visited the Bourbaki Archives. The underground repository of the Bourbaki Secret Archives is a storage facility built beneath the cave of the former Capoulade Cafe. Given its sporadic use by staff and scholars, the entire space – including the Gallery of all intermediate versions of every…

  • Bourbaki and Grothendieck-Serre

    This time of year I’m usually in France, or at least I was before Covid. This might explain for my recent obsession with French math YouTube interviews. Today’s first one is about Bourbaki’s golden years, the period between WW2 and 1975. Alain Connes is trying to get some anecdotes from Jean-Pierre Serre, Pierre Cartier, and…

  • the birthday of Grothendieck topologies

    This is the story of the day the notion of ‘neighbourhood’ changed forever (at least in the geometric sense). For ages a neighbourhood of a point was understood to be an open set of the topology containing that point. But on that day, it was demonstrated that the topology of choice of algebraic geometry, the…