Terminology question - for the professors

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Posted by Joel on September 11, 2002 at 10:32:04:

Is a Sum statement properly termed a "function"
so that EITHER of the following:

f(n) = n(n+1)/2
and
f(n) = Sum[from n=1 to n]n

BY ITSELF would be correctly considered a function that defines the series {1,3,6,10,15...} ?

The former, of course, is a quadratic function. What is the latter? Is it a propositional function?

Re: Terminology question - for the professors T.Gracken 11:53:52 09/11/02 (0)
Re: Terminology question - for the professors Jonathan Burros 11:35:24 09/11/02 (7)
- Re: Terminology question - for the professors Joel 18:49:58 09/11/02 (6)
  - No...because it becomes f(n) after summation (n/t) Subhotosh Khan 08:02:52 09/12/02 (5)
    - Very confusing... Joel 09:57:08 09/12/02 (4)
      - Re: Very confusing... T.Gracken 13:42:44 09/12/02 (2)
        
        ah, recursion ... Joel 17:48:47 09/12/02 (1)
        
        Re: ah, recursion ... T.Gracken 21:34:08 09/12/02 (0)
      - keep after 'em, Joel....I'm learning too! I automatically get nervous every time I see the "sigma summation formula" ! Denis Borris 10:59:23 09/12/02 (0)

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