Re: Summations with Primes

*To*: mathgroup at smc.vnet.net*Subject*: [mg39953] Re: Summations with Primes*From*: bobhanlon at aol.com (Bob Hanlon)*Date*: Thu, 13 Mar 2003 03:01:14 -0500 (EST)*References*: <b4mnus$imf$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

sumOverPrimes[expr_, {i_Symbol, imin_Integer, imax_Integer}] := Module[{k}, Sum[expr /. i:>Prime[k], {k, PrimePi[imin], PrimePi[imax]}]]; sumOverPrimes[f[i], {i,3,15}] f[3]+f[5]+f[7]+f[11]+f[13] Bob Hanlon In article <b4mnus$imf$1 at smc.vnet.net>, "Anthony Felder" <afelder at crsi.org> wrote: << Subject: Summations with Primes From: "Anthony Felder" <afelder at crsi.org> To: mathgroup at smc.vnet.net Date: Wed, 12 Mar 2003 07:34:52 +0000 (UTC) Can you tell me if, when calculating a summation of f(i) where i goes from imin to imax, Mathematica can be forced to only use prime values for i? Thank you for your time Anthony Felder >>