On Tue, 15 Jul 2008 22:27:36 -0400, Paul Sperry
<plsperry@[EMAIL PROTECTED]
> wrote in
<news:150720082227360568%plsperry@[EMAIL PROTECTED]
> in
alt.algebra.help:
> In article <1p8cwg9spj9vh.1bekopd1ypbqa.dlg@[EMAIL PROTECTED]
>, Brian M. Scott
> <b.scott@[EMAIL PROTECTED]
> wrote:
>> On Tue, 15 Jul 2008 17:45:58 -0400, Paul Sperry
>> <plsperry@[EMAIL PROTECTED]
> wrote in
>> <news:150720081745589130%plsperry@[EMAIL PROTECTED]
> in
>> alt.algebra.help:
>> [...]
>>> "Over" is more informal. "The sum of t(n) over [x,y]" ,
>>> "the sum of t(n) for all n in [x,y]" and "sum(t(n) : n is
>>> in [x,y])"
>> I consider this last notationally incorrect: it should be
>> sum{t(n) : n in [x, y]}.
> It depends on how you feel about verbs I guess.
I wasn't objecting to 'is', since I assume that your 'is in'
and my 'in' both represent the member****p symbol; I was
objecting to your use of parentheses instead of curly
braces. That's the sum over a set.
[...]
Brian
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