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What is a Q-D scheme for a continued fraction? I am reading this text on numerical evaluation of the H-function and the author suggests using continued fractions as done by many other special functions. However, he shows this q-d scheme whose definition I cannot find.

EDIT: Here is a screenshot of the section of the paper I was referring to.from the paper

It was quite easy to understand and apply this, but it left wandering what is the Q-D scheme :)

Gustavo
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  • you should identify the text and include an excerpt may reveal to people what you are talking about, and where else it might be found – Will Jagy Oct 14 '15 at 20:36
  • http://www.luschny.de/math/factorial/approx/continuedfraction.html – Will Jagy Oct 14 '15 at 20:37
  • https://books.google.com/books?id=1nwbtGQN4jcC&pg=PA344&lpg=PA344&dq=Q-D+scheme+for+a+continued+fraction&source=bl&ots=CRRf_xM6sL&sig=7vnXGuQZTCFrpSNHO8AP9WePNzw&hl=en&sa=X&ved=0CDYQ6AEwA2oVChMIkqm-o-jCyAIVTSmICh0PQQM0#v=onepage&q=Q-D%20scheme%20for%20a%20continued%20fraction&f=false – Will Jagy Oct 14 '15 at 20:38
  • Oh, you found it! Thanks a lot! Curiosity was killing me. Please post it as answer so I can vote for it :) – Gustavo Oct 14 '15 at 20:50
  • we don't usually post answers that are just links. Further, I have no idea where you would find an introductory description of the technique in question, it has evidently been used, and expanded, for decades. – Will Jagy Oct 14 '15 at 20:53

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