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MathGroup Archive 2012

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Re: a bug in V8 when computing hypergeometric function 2F0 ?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg126319] Re: a bug in V8 when computing hypergeometric function 2F0 ?
  • From: Yi Wang <tririverwangyi at gmail.com>
  • Date: Tue, 1 May 2012 05:20:43 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <jnb4qu$5kn$1@smc.vnet.net>

If you look at the series definition of 2F0, the series doesn't converge for the arguments you give. On the other hand, I am not sure if in this region the 2F0 is defined by analytical continuation. 

-- It's not an answer, just some thoughts.

On Thursday, April 26, 2012 5:34:22 AM UTC-4, Rajesh Kumar A/l Parameswaran Nair (Staff) wrote:
> hello,
> 
> can anybody help?
> 
> i have been trying to compute the value of  HypergeometricPFQ[{1,
> 0.5}, { }, 0.5] on mathematica V8.
> 
> mathematica does not return a numerical value , except to say  that
> the output is " complex infinity".
> 
> my hunch is that  something is not right here  as an earlier version
> of mathematica ,   (V4  i think)  ,  is  able to do the job and give
> the answer ... 1.27998+ 0.339235 i. This result is found in the book "
> mathematica guide book for symbolics" by Michael Trott.
> 
> s is there a bug somewwere?
> 
> i have another  question: can this be calculated on V7 ?
> 
> cheers




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