Sum

*To*: mathgroup at smc.vnet.net*Subject*: [mg30129] Sum*From*: "marc jeanno" <ts at tsts.com>*Date*: Sun, 29 Jul 2001 21:26:20 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Dear Sirs, let n be an integer >=1. Let us consider the following sums: s(1)= P[1]Log[P[1]] s(2)= P[2]Log[P[2]]+P[1]log[P[2]+P[1]] s(3)= P[3]Log[P[3]]+P[2]Log[P[3]+P[2]]+P[1]Log[P[3]+P[2]+P[1]]