Summation

*To*: mathgroup at smc.vnet.net*Subject*: [mg86129] Summation*From*: Robert Pigeon <robert.pigeon at videotron.ca>*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, Robert -----Original Message----- From: Andrzej Kozlowski [mailto:akoz at mimuw.edu.pl] Sent: 21 f=E9vrier 2008 18:00 To: mathgroup at smc.vnet.net 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