#1907 Kummer reflection

closed
3
2010-03-04
2010-02-18
No

The Kummer reflection formula is applied in cases where it would be best to not use it:

(%i12) expand_hypergeometric : true$

OK:
(%i13) hypergeometric([-2],[3],x);
(%o13) x^2/12-(2*x)/3+1

Not OK:
(%i14) hypergeometric([-2],[3],-x);
(%o14) hypergeometric([5],[3],x)*%e^(-x)

I think good fix would be be apply the identity in only cases that make lead to a polynomial case.

Discussion

  • Barton Willis

    Barton Willis - 2010-03-04

    fixed by hypergeometric.lisp cvs version 1.11

     
  • Barton Willis

    Barton Willis - 2010-03-04
    • status: open --> closed
     

Log in to post a comment.

Get latest updates about Open Source Projects, Conferences and News.

Sign up for the SourceForge newsletter:





No, thanks