Re: Multiple Sums in Mathematica
- To: mathgroup at smc.vnet.net
- Subject: [mg53719] Re: Multiple Sums in Mathematica
- From: Roland Franzius <roland.franzius at uos.de>
- Date: Tue, 25 Jan 2005 05:03:13 -0500 (EST)
- Organization: Universitaet Hannover
- References: <csvir2$avi$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Sebastian Brandt wrote:
> Hello,
>
> I want to perform a nested sum, where the number of summations is not
> specified. I.e., I am looking for a way to implement the sum
>
> sum[ f, {i1, 1, M}, {i2, 1, M}, ..., {in, 1, M} ]
>
> Does anbody know how to do this for arbitrary n?
s[n_] := sum[f, Sequence[
ToExpression["{i" <> # <> ",1,M}" & /@ (ToString /@ Range[n])]]]
--
Roland Franzius