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|    sci.math.symbolic    |    Symbolic algebra discussion    |    10,432 messages    |
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|    Message 8,632 of 10,432    |
|    Axel Vogt to Peter Luschny    |
|    Re: The Joy of CAS    |
|    25 Jul 14 12:41:03    |
   
   From: &noreply@axelvogt.de   
      
   On 25.07.2014 12:11, Peter Luschny wrote:   
   > sum_{i=0..n} binomial(n-i-1, n-i)   
      
   I think the reason might be   
      
   binomial(n-i-1,n-i);   
   subs(n-i=m, %); convert(%, GAMMA); subs(m=n-i, %);   
      
    GAMMA(n - i)   
    -------------------------   
    GAMMA(1 + n - i) GAMMA(0)   
      
   and ignoring 1/GAMMA(0) = 0 but computing GAMMA(0).   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   
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