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.