MathGroup Archive 1999

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Re: Langford's Problem

  • To: mathgroup at
  • Subject: [mg19601] Re: [mg19541] Langford's Problem
  • From: "Andrzej Kozlowski" <andrzej at>
  • Date: Sat, 4 Sep 1999 01:34:32 -0400
  • Sender: owner-wri-mathgroup at

I am also very much in favour of having more mathematical problems posted to
the mathgroup, but with a qualification. There should be nothing that would
lead one to suspect that the author has an ulterior motive like presenting
the solution somewhere else as his own work,  making a commercial use of it
and so on. So we should insist that people submitting such problems at least
use their real names and  genuine e-mail addresses. Otherwise once people
feel they have been exploited and made to look foolish and naive they will
stop participating in the list altogether. I also think this moderated list
should not admit anonymous messages or those containing fake e-mail
addresses (though I am not sure how one can verify such things).  While I do
not see how any one could "exploit" a solution of  a "toy problem" like
this one I think there were enough reasons to be suspicious of the way in
which it was posted to justify Hartmut's concern.
Andrzej Kozlowski
Toyama International University


>> With respect to this, I disagree with Hartmut. Mathematica is a very
>> powerful tool for solving problems and most of us can profit from studying
>> the various solutions of a posed problem. Being a reader of this group for
>> many years, I regret that indeed the tendency of the questions has changed
>> to only technical problems with Mathematica. Some years ago indeed
>> mathematical questions like this one were regularly brought up and I like
>> this particular problem very much. 

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