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Tag: Grothendieck

G-spots : Mormoiron

Published March 18, 2013 by lieven

With Grothendieck’s 85th brithday coming up, march 28th, we continue our rather erratic quest to locate the spots that once meant a lot to him.

Ever wondered what Grothendieck’s last-known hideout looked like? Well, here’s the answer:
(h/t gruppe eM)

And, here’s the story.

One of the stranger stories to be found on the web is the Grothendieck quest by Roy Lisker. In 1988, after AG declined the Crafoord Prize, Roy convinced an editor of Le Nouvel Observateur to hire him to uncover the whereabouts of Alexandre Grothendieck and, if possible, to interview him.

The ‘quest’ is an hilarious account of Roy’s attempts to prise AG’s address out of the people from the Montpellier maths department, his subsequent travels and stay at Grothendieck’s place.

He put the text online in 2008 and made it intentionally opaque wrt. AG’s phone number and address:

“His phone, if in fact this notorious hermit bothered with such contrivances, was unlisted.”

“…of his adopted village of Lessmoiron (after a 20 year silence it is permissible to reveal its name) , in the department of the Vacluse, a region of France long habituated to the herbergement of exiled or alienated Popes.”

By that time the Grothendieck-Serre correspondence had been published for over 4 years, including a letter dated 2 september 1984, giving away this ‘secret information’:

So, not only do we have a phone number (today it would be 0033(0)4 90 61 88 30), but also that AG lived in the hamlet “Les Aumettes” in the village of Mormoiron (and not ‘Less’moiron, duh), close to the famous (to any bicyclist) Mont Ventoux.

From Roy’s quest we learn that it is about 3 kms from the center of Mormoiron and that
“Grothendieck’s cottage was built up against a hillside, it’s conical shape hugging the hill like the helmet of a medieval knight. The lower entrance was graced by a pair of sturdy French windows. Above these, at the level of the attic, two tiny rectangular windows filtered light into the bedroom.”

If you want to explore the immediate neighborhood of Les Aumettes, click on the picture below (bonus points for anyone who is able to pinpoint the exact location on the map).

If someone at the Mairie de Mormoiron reads this, please consider adding to your list of ‘Personnalités liées à la commune’

– Raymond Guilhem de Budos (? – 1363), neveu de Clément V, seigneur de Clermont, Lodève, Budos,Beaumes-de-Venise, Bédoin, Caromb, Entraigues, Loriol et Mormoiron, gouverneur de Bénévent, Maréchal de la Cour pontificale et Recteur du Comtat Venaissin de 1310 à 1317.
– Guillaume-Emmanuel-Joseph, baron Guilhem de Sainte-Croix, (1746-1809), membre de l’Institut, auteur d’un essai Examen critique des anciens historiens d’Alexandrie, couronné par l’Académie des Inscriptions et Belles-Lettres en 177224.
– Paul Vialis, ancien maire de Moirmoiron ou il est né en 1848, et député de Vaucluse.
– Albert Schou (da), (27 mars 1849 – 4 février 1900), photographe danois

this one:

– Alexandre Grothendieck (né en 1928), mathématicien français ayant reçu la Médaille Fields.

Merci!

Previous in this series:
– Vendargues

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G-spots : Vendargues

Published March 16, 2013 by lieven

In a couple of days, on march 28th, Alexandre Grothendieck will turn 85.

To mark the occasion we’ll run a little series, tracking down places where he used to live, hoping to entice some of these villages in the south of France to update their Wikipedia-page by adding under ‘Personnalités liées à la commune’ the line

– Alexandre Grothendieck (né en 1928), mathématicien français ayant reçu la Médaille Fields.

as did the village of Le Chambon-sur-Lignon, where Grothendieck was kept safe from 1942-1945, separated from his mother who was send to an internment camp (his father was deported by the French authorities in august 1942 and killed by the Nazis in Auschwitz).

After the war, Alexandre was reunited with his mother and, according to Allyn Jackson’s As If Summoned from the Void: The Life of Alexandre Grothendieck, they “went to live in Maisargues, a village in the wine-growing region outside of Montpellier”.

Amir Aczel adds to this in his book The artist and the mathematician, the story of Nicolas Bourbaki: “From 1945 until 1948, mother and son lived in the small hamlet of Mairargues, virtually hidden among the vineyards, a dozen kilometers from Montpellier. They had a marvelous small garden: they never had to work at gardening and yet the earth was so fertile, and the rains so abundant, that the garden produced a plentiful harvest of figs, spinach, and tomatoes. Their garden was at the verge of splendid poppies. Grothendieck remembers his time there with his mother as “la belle vie”.”

But, there is no Maisargues nor Mairargues to be found in France.

There is the village of Caissargues, close to Nimes, about 50 kms from Montpellier, and, there is the village of Meyrargues, close to Pertuis, more than 170 kms from Montpellier.

So, where is the hamlet of “la belle vie”?

Jackson’s and Aczel’s info is based on a footnote in Grothendieck’s Recoltes et semailles (in fact, Aczel’s text is a mere translation of it):

“Entre 1945 et 1948, je vivais avec ma mère dans un petit hameau à une dizaine de kilomètres de Montpellier, Mairargues (par Vendargues), perdu au milieu des vignes. (Mon père avait disparu à Auschwitz, en 1942.) On vivait chichement sur ma maigre bourse d’étudiant. Pour arriver à joindre les deux bouts, je faisais les vendanges chaque année, et après les vendanges, du vin de grapillage, que j’arrivais à écouler tant bien que mal (en contravention, paraît-il, de la législation en vigueur. . . ) De plus il y avait un jardin qui, sans avoir à le travailler jamais, nous fournissait en abondance figues, épinards et même (vers la fin) des tomates, plantées par un voisin complaisant au beau milieu d’une mer de splendides pavots. C’était la belle vie.”

Although Grothendieck misspells Mayrargues, he points to the village of Vendargues which is situated 12 kms east of Montpellier and has a hamlet called Mayrargues (foto above). Via Google Maps you can visit “l’hameau de la belle vie” by yourself (it even has streetview).

If someone at the Mairie de Vendargues comes across this post, please consider adding to your list of famous (former) inhabitants:

– Marcelin Albert (1851-1921), séjourne au mazet de Montmaris, leader de la révolte viticole, est le parrain de Marcellin Guille né en 1907 et oncle d’Archiguille.
– Sabri Allouani (1978-), raseteur (Septuple Vainqueur du Championnat de France de la Course Camarguaise au As 2000-2007)
– Archiguille (Augustin François Guille, peintre contemporain “Transfigurations”) vivant en Suisse.
– Laurent Ballesta (1974-), Biologiste marin, plongeur, photographe, collaborateur de Nicolas Hulot)
– Le général Pierre Berthezène (1775-1847), baron d’Empire, pair de France (1775-1847)
– Jerôme Bonnisel (joueur de football professionnel)
– le baron Pierre Le Roy de Boiseaumarié, (1890-1967), fondateur des appellations d’origine contrôlées, vigneron à Châteauneuf-du-Pape.

this one:

– Alexandre Grothendieck (né en 1928), mathématicien français ayant reçu la Médaille Fields.

Thanks!

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#cestGrothendieck

Published September 30, 2011 by lieven

In Belgium the hashtag-craze of the moment is #cestjoelle. Joelle Milquet is perceived to be the dark force behind everything, from the crisis in Greece, over DSK, to your mother-in-law coming over this weekend? #cestjoelle.

Sam Leith used the same meme in his book the coincidence engine.

A hurricane assembling a passenger jet out of old bean-cans? #cestGrothendieck

All shops in Alabama out of Chicken & Broccoli Rica-A-Roni? #cestGrothendieck

Frogs raining down on Atlanta? #cestGrothendieck

As this is a work of fiction, Alexandre Grothendieck‘s name is only mentioned in the ‘author’s note’:

“It is customary to announce on this page that all resemblances to characters living or dead are entirely coincidental. It seems only courteous to acknowledge, though, that in preparing the character of Nicolas Banacharski I was inspired by the true-life story of the eminent mathematician Alexandre Grothendieck.”

The name ‘Nicolas Banacharski’ is, of course, chosen on purpose (the old Bourbaki NB-joke even makes an appearance). The character ‘Isla Holderness’ is, of course, Leila Schneps, the ‘Banacharski ring’ is, of course, the Grothendieck circle. But, I’d love to know the name of the IRL-‘Fred Nieman’, who’s described as ‘an operative for the military’.

Sam Leith surely knows all the Grothendieck-trivia which shouldn’t come as a surprise because he wrote in 2004 a piece for the Spectator on the ‘what is a metre?’ incident (see also this n-category cafe post).

The story of ‘the coincidence engine’ is that Grothendieck did a double (or was it triple) bluff when he dropped out of academia in protest of military money accepted by the IHES. He went into hiding only to work for a weapons company and to develop a ‘coincidence bomb’. As more and more unlikely events happen during a car-ride by a young Cambridge postdoc though the US (to propose to his American girlfriend), the true Grothendieck-aficianado (and there are still plenty of them in certain circles) will no doubt begin to believe that the old genius succeeded (once again) and that Ana’s (Grothendieck’s mother) $\infty$-ring is this devilish (pun intended) device…

However,

“There was no coincidence engine. Not in this world. It existed only in Banacharski’s imagination and in the imaginations he touched. But there was a world in which it worked, and this world was no further than a metre from our own. Its effect spilled across, like light through a lampshade.

And with that light there spilled, unappeased and peregrine, fragments of any number of versions of an old mathematician who had become his own ghost. Banacharski was neither quite alive nor quite dead, if you want the truth of it. He was a displaced person again, and nowhere was his home.”

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