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  • Subject: [mg86129] Summation
  • From: Robert Pigeon <robert.pigeon at>
  • Date: Mon, 3 Mar 2008 04:38:28 -0500 (EST)

Thanks to all that answered my question about summation !

The question was mainly about summation using a set of numbers. I mentioned
that I wanted to work with prime numbers as a special set. And all your
answered were well appreciated.

And yes, BTW, 2 is a prime too! And 1 was considered a prime number for a
long time, at least till Henri Lebesgue in 1899.... Now it is not...!

Thanks again,


-----Original Message-----

From: Andrzej Kozlowski [mailto:akoz at]

Sent: 21 f=E9vrier 2008 18:00

To: mathgroup at

Subject: [mg86129] [mg85760] Re: [mg85727] Re: Summation question

On 20 Feb 2008, at 12:57, David Bailey wrote:

> Plus @@ Map[f, {1, 3, 5, 7, 11, 13}]


> BTW, isn't 2 a prime too!

And 1 is certainly not one ;-)

Andrzej Kozlowski

Robert Pigeon

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