[seqfan] Re: Displaying an o.g.f for binomial(mn,n)

[Thomas Copeland]

Ed,

Yes, there are many variations. That's why I asked, so thanks very much for
the suggestion. That's exactly what I wanted, if the consensus is that it's
acceptable.

Tom

On Sat, May 26, 2012 at 1:07 PM, Ed Jeffery <lejeffery7 at gmail.com> wrote:

> Tom,
>
> Pardon me for butting in:
>
> As a starting point, your equation might written something like
>
> z^3 = 1/(2*sqrt(delta))*sum[i, 1, 4; prod[j, k <> i; 1 <= j < k <= 4;
> abs(x_j - x_k)]].
>
> Unfortunately there are many variations of notation of expressions
> involving sum[] and prod[] in OEIS. I think it would be good to have only
> one fixed format for them given on the style page.
>
> Ed
>
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