Illusie mentions tape recordings of Grothendieck explaining his trace formula and more. Are they or similar recordings online? I guess, even if (what I doubt) everything he thought about that is somewhere in print, it would give an interesting insight in his way of thinking.

  • $\begingroup$ Despite the question mark at the end, I don't see what the question is. What kind of answer are you looking for? $\endgroup$ – Anton Geraschenko Oct 26 '09 at 14:07
  • $\begingroup$ This seems like a real question to me: Are there any audio copies of Grothendieck's lectures, and can they be found online? $\endgroup$ – David E Speyer Oct 26 '09 at 14:09
  • $\begingroup$ I would rephrase the question as: I hear there are recordings of Grothendieck speaking. Are they online somewhere? Are there transcriptions online? $\endgroup$ – Jason Dyer Oct 26 '09 at 14:16
  • $\begingroup$ I agree that this is a real question, even though it doesn't read like one. $\endgroup$ – Michael Lugo Oct 26 '09 at 14:35
  • $\begingroup$ Q. just reformulated, I hope now clearer. $\endgroup$ – Thomas Riepe Oct 26 '09 at 14:35

Illusie told me last year that these tapes of his meetings with Grothendieck are somewhere in his basement where they're very hard to find, so they're certainly not online.

The recording of Illusie's reminisces of Grothendieck to which both posts link has been transcribed here. Drinfeld and Illusie will be releasing a more polished version at some point next year.

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    $\begingroup$ Thanks. Let's hope that they get secured and copied sometime before they deteriorate. $\endgroup$ – Thomas Riepe Oct 27 '09 at 10:41
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    $\begingroup$ Unfortunately the link to the transcriptions is broken. $\endgroup$ – Michael Bächtold Jul 17 '13 at 17:54

Will we continue Scientific Research http://cds.cern.ch/record/912518?ln=en Allons nous continuer la Recherche Scientifique Recording number CERN-AUDIO-1972-003 Speaker(s) Grothendieck,A Date 27 January 1972 Duration 138 minutes Language French Keywords Science Synopsis Réflexions sur la science- responsabilité du savant Copyright © 1972 CERN Notes partie 1: exposé partie 2: questions f/a partie 3: questions f/a Listen to Part 1: Part 2: Part 3:

100 hours of audio of lectures of Grothendieck http://www.archmathsci.org/catalogue/general-chronology-of-recordings-since-1973/chronology-of-recordings-1973-1980/1973-recordings/ 1973 Recordings Lecture Courses by Alexandre GROTHENDIECK 3 Lecture Courses on respectively 1. Algebraic Geometry 2. The Theory of Algebraic Groups 3. Topos Theory

The copyright of all these recordings is that of the Department of Mathematics of SUNY at Buffalо.

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    $\begingroup$ Not available as of now. Was it before ? $\endgroup$ – Olorin Nov 15 '14 at 21:06
  • $\begingroup$ Not available but there is this, and you can hear a part of this from the 18th minute in the talk Un topo sur les topos by Alain Connes. <span class="d-none">$\endgro $\endgroup$ – Watson Jan 25 '19 at 15:28

There is a recording of Illusie talking about Grothendieck at The Grothendieck circle. I couldn't find any recordings of Grothendieck himself.

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