I couldn't find a maple implementation. Carsten's implementation in Mathematica is available but is password protected. I'll write to them to give me access to it.
On Saturday, March 7, 2015 at 10:59:45 PM UTC+5:30, Aaron Meurer wrote: > > Wasn't there an implementation in Maple? Is it online? > > Aaron Meurer > > On Sat, Mar 7, 2015 at 11:27 AM, someone <[email protected] <javascript:>> > wrote: > > Hi, > > > > > >> I want to implement Karr Algorithm for GSoC 2015. I have read the > >> Karr's original paper > > > > This is just for Background and basic definition. > > It is not complete enough for a modern implementation. > > > >> and Brucin Erocal's thesis > >> <http://www.sagemath.org/files/thesis/erocal-thesis-2011.pdf> > > > > He has a very good itroduction to the topic. > > However, his focus was algebraic extensions > > of the difference fields. For an implementation > > I would go after transcendental ones first. > > Algebraic extensions are always most difficult. > > (Compare also to Risch integration.) > > > >> I found Karr's original paper is a little hard to read > >> from So I am currently reading Carsten Schneider Thesis > >> <file:///home/vramana/Downloads/SymbSumTHESIS.pdf> . > > > > Perfect. But this assumes the same algebraic setting > > of difference algebra. > > > >> Erocal Thesis mentions of an existing implementation of Karr > >> algorithm using Sage. But I couldn't find it anywhere. > > > > The Code was never merged into Sage and is not online. > > > > -- > > You received this message because you are subscribed to the Google > Groups "sympy" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected] <javascript:>. > > To post to this group, send email to [email protected] > <javascript:>. > > Visit this group at http://groups.google.com/group/sympy. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/54fb3501.cb5ab40a.03bf.ffffe7eaSMTPIN_ADDED_BROKEN%40gmr-mx.google.com. > > > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/0e25e450-1973-4eef-bc39-b2c0a3994ac4%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
