Re: Partition

*To*: mathgroup at smc.vnet.net*Subject*: [mg22106] Re: Partition*From*: Murray Eisenberg <murray at math.umass.edu>*Date*: Mon, 14 Feb 2000 02:03:57 -0500 (EST)*Organization*: Mathematics & Statistics, Univ. of Mass./Amherst*References*: <885iqv$a0a@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

(* just to count number of partitions *) PartitionsP[5] 7 (* to generate the actual partitions *) <<DiscreteMath`Combinatorica` Partitions[5] {{5}, {4, 1}, {3, 2}, {3, 1, 1}, {2, 2, 1}, {2, 1, 1, 1}, {1, 1, 1, 1, 1}} Kai Xiu wrote: > > I am wondering how to do a partition work in Mathematica which is like > give all the solutions of > x_1+x_2+x_3+...+x_n=n > where all x's are positive integers and not necessarily be different to each > other. > > Thanks, > > Kai -- Murray Eisenberg murray at math.umass.edu Mathematics & Statistics Dept. phone 413 549-1020 (H) Univ. of Massachusetts 413 545-2859 (W) Amherst, MA 01003-4515