Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2002
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2002

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Simplify using assumptions and Gamma[*]

  • To: mathgroup at smc.vnet.net
  • Subject: [mg34770] Re: Simplify using assumptions and Gamma[*]
  • From: Erk Jensen <Erk.Jensen at cern.ch>
  • Date: Wed, 5 Jun 2002 03:38:34 -0400 (EDT)
  • References: <adhru1$3uk$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Michael Chang wrote:
> Hi,
> 
> Since the Euler Gamma function is (n-1)! for n>=1 and n an integer, I
> was wondering why
> 
> FullSimplify[Gamma[n], n>=1 && n \[Element] Integers]
> 
> does not evaluate to (n-1)! ?  Am I missing something here?
> 
> Am I using the Assumptions capability incorrectly?
> 
> Many thanks in advance,
> 
> Michael
> 

The question is: What do you consider "simpler"? Since

    FullSimplify[(n-1)!]
results well in
    Gamma[n]
Ciao
      -erk-

-- 
  Dr.-Ing. Erk JENSEN                    mailto:Erk.Jensen at cern.ch
  CERN  PS/RF  L19510                    http://cern.ch/Erk.Jensen
  CH-1211 Geneva 23                      Tel.:     +41 22 76 74298
  Switzerland                            Fax.:     +41 22 76 78510



  • Prev by Date: Re: Simplify using assumptions and Gamma[*]
  • Next by Date: RE: How can solue the inequation system in mathematica
  • Previous by thread: Re: Simplify using assumptions and Gamma[*]
  • Next by thread: Re: Simplify using assumptions and Gamma[*]