Dear Professors Stefan Kohl, Chiristopher Jefferson and Thomas Breuer Thank you very much for your useful comments. Have a nice week ahead.
Bset regards Fatemeh Moftakhar On Sun, Apr 17, 2016 at 5:04 PM, Thomas Breuer <s...@math.rwth-aachen.de> wrote: > Dear GAP Forum, > > probably the question is about the GAP functions that compute > the irreducible characters of a given group, > not about the function 'CharacterTable'. > > If yes then one should look for the methods for the function 'Irr', > for example using 'ApplicableMethod'. > > Concerning the question about calculations with primitive roots > of unity, I would suggest to look at the chapters ``Cyclotomics'' > and ``Abelian Number Fields'' of the GAP Reference Manual. > Also the paper cited as [Bre97] in this manual might be of interest. > > All the best, > Thomas > > > On Sat, Apr 16, 2016 at 04:03:19PM +0430, fatemeh moftakhar wrote: > > Dear Forum > > > > The command "Print(ff)" in GAP gives the code of the "ff" written in GAP. > > See for example the following command in GAP: > > gap> Print(Combinations); > > function ( arg ) > > local combs, mset; > > if Length( arg ) = 1 then > > mset := ShallowCopy( arg[1] ); > > Sort( mset ); > > combs := CombinationsA( mset, 1, Length( mset ), [ ], 1 ); > > elif Length( arg ) = 2 then > > mset := ShallowCopy( arg[1] ); > > Sort( mset ); > > combs := CombinationsK( mset, 1, Length( mset ), arg[2], [ ], 1 > ); > > else > > Error( "usage: Combinations( <mset> [, <k>] )" ); > > fi; > > return combs; > > end > > > > If I run the command "Print(CharacterTable)", then we can see the > following > > GAP message: > > > > gap> Print(CharacterTable); > > <Operation "CharacterTable"> > > > > Is it possible to find the GAP code for CharacterTable? > > > > If no, is it possible to find the source of the program for calculating > > with primitive roots of unity in GAP? > > > > finally where is the library of primitive roots of unity? For example I > > need to source program of GAP for computing E(8)-E(8)^3? > > > > Best regards > > Fatemeh Moftakhar > > -- Regards; Miss Fatemeh Moftakhar PhD Candidate, Department of Pure Mathematics, Faculty of Mathematical Sciences, University of Kashan, Kashan, Iran _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
