Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2004
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2004

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Summation limits

  • To: mathgroup at smc.vnet.net
  • Subject: [mg46675] Re: Summation limits
  • From: tinkham at ucalgary.ca (tinkham)
  • Date: Fri, 27 Feb 2004 19:32:04 -0500 (EST)
  • References: <c1lu5g$nse$1@smc.vnet.net> <c1mtnt$jjg$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Paul Abbott <paul at physics.uwa.edu.au> wrote in message 
> In article <>, tinkham at ucalgary.ca (tinkham) 
> wrote:
 
> > I realize that I can just wrap the expression being summed in an
> > If[i!=p, ...], but it would be nice if I could just put this test in
> > the lower limit.
> 
> There is a way to do this: use the Notation package to define your own 
> input notation that accepts a lower limit of the form, say i != 1 = p. 
> See
> 
>    http://physics.uwa.edu.au/pub/Mathematica/MathGroup/TestSumIterator.nb

Thanks Paul, the Utilities`Notation` package worked beautifully for that.
Doug

> Cheers,
> Paul


  • Prev by Date: FindMinimum: foo[x_?NumericQ] vs. NumberQ
  • Next by Date: RE: Combining Vectors to Form a Matrix
  • Previous by thread: Re: Summation limits
  • Next by thread: Re: Any way to display vars internal to a function on interrupt?