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Re: decoding inbuilt function

  • To: mathgroup at
  • Subject: [mg121099] Re: decoding inbuilt function
  • From: Murray Eisenberg <murray at>
  • Date: Sat, 27 Aug 2011 08:17:29 -0400 (EDT)
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  • Reply-to: murray at

As another poster has indicated, the Mathematica "internals" 
documentation is totally vague about how Limit is programmed. It says 
nothing there about the Gruntz algorithm. That algorithm is only 14 
years old (see Gruntz's thesis:, whereas Mathematica has 
been around since 1988. As a rule, Wolfram Research does incorporate new 
methods when appropriate.

Aside from Gruntz's thesis, referenced above, you could look, e.g., at:

Perhaps further on-line search will reveal better sources.

On 8/26/11 5:25 AM, student wrote:
> hi,
> i was trying to get the cas logic in  computing limits
> i never meant to decode a proprietary software illegally (just a try
> to understand the logic behind)
> so i really need to modify my question
> i really thank everybody who responded in a positive way to help me
> especially simon sir for the help rendered and rest of them really
> guided me in a right way so i thank them all
> anyway it is really clear that the logic is gruntz algorithm (which
> looks really confusing)
> so can u people please help me in this case
> thanking all

Murray Eisenberg                     murray at
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305

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