Unsolved Problems in Number Theory - Page 29

[David Wilson]

I am sending this to SeqFan because my mail to RKG bounces.

Yes, I found the 3x3 magic square of Chen primes in question shortly before 
posting it to math-fun, so this would have presumably happened in 2002.

According to http://en.wikipedia.org/wiki/Chen_prime, Rudolf Ondrejka 
discovered this square, and would have done so no later than 2001 (the year 
of his death).

Interestingly, this same magic square also appears at 
http://www.primepuzzles.net/puzzles/puzz_263.htm, as the central 3x3 magic 
square of an antimagic square of primes. If the 1999-2001 copyright date on 
this page is accurate, this posting would have preceded my own as well.

- Dave Wilson.

----- Original Message ----- 
From: "Richard Guy" <rkg at cpsc.ucalgary.ca>
To: "Paul Muljadi" <paulmuljadi at yahoo.com>
Cc: "Wilson, David W. -- David Wilson" <davidwwilson at comcast.net>; 
<davidwwilson at attbi.com>
Sent: Friday, September 01, 2006 2:22 PM
Subject: Re: Unsolved Problems in Number Theory - Page 29


>I suspect:
> (a) that some of these 8 may be identical.
> (b) that none of them is the one we want.
> Slightly more positively
> (c) it is David W Wilson that we want
> [not, e.g., David L Wilson at U of WI]
> (d) I have the two above addresses, but
> I believe that I've already tried them
> and they are both out of date.    R.
>
> On Thu, 31 Aug 2006, Paul Muljadi wrote:
>
>> I checked the Mathematics Genealogy Project, and found
>> eight 'David Wilson':
>>
>> Rutgers University, New Brunswick 1969
>> Kent State University 1982
>> University of Kansas 1967
>> University of Sydney 1986
>> Massachusetts Institute of Technology 1996
>> University of Calgary 1999
>> North Carolina State University 2002
>> Queensland University of Technology 2003
>>
>> Which one do you think is the right guy?  Paul
>>
>> --- Richard Guy <rkg at cpsc.ucalgary.ca> wrote:
>>
>>> Third time lucky?  Found a new address
>>> -- hope it's the right David Wilson!  R.
>>>
>>> On Fri, 25 Aug 2006, Richard Guy wrote:
>>>
>>>> First attempt failed.  Trying again with one
>>>> less `w'   R.
>>>>
>>>> On Fri, 25 Aug 2006, Richard Guy wrote:
>>>>
>>>>> I'm sorry that I haven't kept a record
>>>>> of what David Wilson said.  Let's try to
>>>>> contact him.    R.
>>>>>
>>>>>
>>>>> On Fri, 25 Aug 2006, Paul Muljadi wrote:
>>>>>
>>>>>> Professor Guy,
>>>>>>
>>>>>> In your book, you wrote:
>>>>>>
>>>>>> On 2002-08-25 David Wilson sent a 3 x 3 magic
>>> square
>>>>>> with all prime entries and minimal row sum 177.
>>>>>>
>>>>>> 17 89 71
>>>>>> 113 59 5
>>>>>> 47 29 101
>>>>>>
>>>>>> Did David Wilson actually discover this Chen
>>> prime
>>>>>> magic square?  If he did, when?
>>>>>>
>>>>>> Sincerely,
>>>>>> Paul Muljadi
>>>>>>
>>>>>
>>>>
>>>
>>
>
>
> -- 
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