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Re: Expressions with ellipsis (...)

  • To: mathgroup at smc.vnet.net
  • Subject: [mg93254] Re: Expressions with ellipsis (...)
  • From: dch888 <dch888 at googlemail.com>
  • Date: Sat, 1 Nov 2008 05:09:15 -0500 (EST)
  • References: <gdmsbd$jv$1@smc.vnet.net> <200810240630.CAA23066@smc.vnet.net>

On Oct 25, 7:01 am, Murray Eisenberg <mur... at math.umass.edu> wrote:
> Saying to use a syntax that Mathematica understands is one, entirely
> appropriate, answer.
>
> Another answer is that Mathematica *should* understand the syntax withell=
ipsis-- and indeed it can with the facilities of David Park's
> Presentations application package.
>
>
>
> Jens-Peer Kuska wrote:
> > Hi,
>
> > write it in a syntax that Mathematica understand, i.e.,
>
> > Limit[Sum[k^2, {k, 1, n}]/n^3, n -> Infinity]
>
> > ??
>
> > Regards
> >    Jens
>
> > dch888 wrote:
> >> Hi Mathematica Friends,
>
> >> I want to do this:
>
> >> Limit[(n^2 + (n - 1)^2 + (n - 2)^2 + ... + 1)/n^3, n -> Infinity]
>
> >> But Mathematica barfs:
>
> >>      expression cannot be followed by "...".
>
> >> Searching the help for 'ellipsis' gives me the Unicode 2026 character
> >> (i.e. ...).
>
> >> How can I get Mathematica to eval this limit?
>
> >> Thanks,
> >> David.
>
> --
> Murray Eisenberg                     mur... at math.umas=
s.edu
> Mathematics & Statistics Dept.
> Lederle Graduate Research Tower      phone 413 549-1020 (H)
> University of Massachusetts                413 545-2859 (=
W)
> 710 North Pleasant Street            fax   413 545-1801
> Amherst, MA 01003-9305

Thanks to you and everyone else on this list.  I learnt the Sum
function today ;-).   Mathematica could be made a little more helpful with it's
error messages.


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