[HN Gopher] A 1940 Letter of Andre Weil on Analogy in Mathematic...
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       A 1940 Letter of Andre Weil on Analogy in Mathematics (2003) [pdf]
        
       Author : gone35
       Score  : 62 points
       Date   : 2024-08-07 07:31 UTC (3 days ago)
        
 (HTM) web link (www.ams.org)
 (TXT) w3m dump (www.ams.org)
        
       | bmitc wrote:
       | Is an interesting read, but it's striking how condescending he is
       | at the outset. How about let the reader decide what they
       | understand or not? There's no use in saying anything regarding
       | that.
        
         | EdwardCoffin wrote:
         | Did you read the introduction? It says: _Weil wrote this
         | fourteen-page letter_ to Simone Weil, his sister _... (Keep in
         | mind that the letter was not written for a mathematician, even
         | though Simone could not understand most of it.)_
        
           | bmitc wrote:
           | Yes I did. And?
        
             | monktastic1 wrote:
             | And without that context, his sister may have been
             | perplexed as to why he would dive into complicated math
             | that he should have known she wouldn't understand. Consider
             | that sometimes when you read ego or aggression into
             | writing, it's not coming from the author's mind but is a
             | projection of your own.
        
         | ThrowawayR2 wrote:
         | One would think that he would know whether his own sister, the
         | recipient, would have sufficient mathematical background to
         | understand his work.
        
           | bmitc wrote:
           | Exactly, so why take the time to remind her of that? Ego is
           | why.
        
             | ThrowawayR2 wrote:
             | A more positive interpretation could be something like " _I
             | can 't express what I want to say without going into topics
             | that I know you have no familiarity with. But I'm aware of
             | that and am not just insensitively bombarding you with
             | jargon._"
        
               | 082349872349872 wrote:
               | Indeed. This is a six (printed) page letter, and already
               | at a page or two in I wouldn't be surprised if it would
               | take that many textbooks (how many printed pages?) to get
               | SAW from where ever she left off (I don't recall maths
               | being very prominent in classics/philosophy departments;
               | note AW's description of a field) to where she could have
               | a hope of seeing the moon itself, beyond the finger
               | pointing at it.
        
         | HarHarVeryFunny wrote:
         | The intended reader was his sister, who he sent the letter to.
         | This was a private letter, not a publication.
         | 
         | His sister had evidentially asked him about his work (maybe to
         | give him something positive to talk about given that he was in
         | prison).
         | 
         | "Some thoughts I have had of late, concerning my arithmetic-
         | algebraic work, might pass for a re- sponse to one of your
         | letters, where you asked me what is of interest to me in my
         | work. So, I decided to write them down, even if for the most
         | part they are incomprehensible to you."
         | 
         | It might seem condescending to speak to his sister like this,
         | but perhaps he understood her intent well enough, and was
         | essentially acknowledging it.
        
           | samstave wrote:
           | Likely even less so... That was likely just how colloquially
           | he is saying to his kin "Tahnks for prodding me about what I
           | thought of my work... so Ill put some write it out here, for
           | good measure, so dont worry if you dont get it..."
           | 
           | Basically he is saying, let me document this for myself, at
           | the appreciated behest of sis.
        
             | drdec wrote:
             | > let me document this for myself, at the appreciated
             | behest of sis.
             | 
             | Tell me you live in the information age without telling me
             | you live in the information age
        
       | lupire wrote:
       | "however it is beautiful and surprising that the prime numbers p
       | for which m is a residue are precisely those which belong to
       | certain arithmetic progressions of increment 4m; for the others m
       | is a non-residue"
       | 
       | Fascinating. At first I was confused because I thought he was
       | referring to the law of reciprocity. But it's actually a
       | different law:                 m = 3       = not a square mod 5.
       | (reciprocal)       = not a square mod 7. (not reciprocal)       =
       | 52 mod 11.          (not reciprocal)       = 42 mod 13.
       | (reciprocal)            Add 4*3 = 12:            = not a square
       | mod 17 (reciprocal)       = not a square mod 19 (not reciprocal)
       | = 72 mod 23.          (not reciprocal)            Add 4*3 = 12:
       | = not a square mod 29 (reciprocal)       = not a square mod 31
       | (not reciprocal)
        
         | eapriv wrote:
         | This easily follows from the law of reciprocity.
        
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