[GAP Forum] A question.

[Fernando Fantino]

Hello, Forum.

I do the following, and the program give me an error.
What happens?

Thank you in advance for any help!

Bets,

Fernando.







                 ########            Lehrstuhl D fuer Mathematik
               ###    ####           RWTH Aachen
              ##         ##
             ##          #             #######            #########
            ##                        #      ##          ## #     ##
            ##           #           #       ##             #      ##
            ####        ##           ##       #             #      ##
             #####     ###           ##      ##             ##    ##
               ######### #            #########             #######
                         #                                  #
                        ##           Version 3              #
                       ###           Release 4.4            #
                      ## #           18 Apr 97              #
                     ##  #
                    ##   #  Alice Niemeyer, Werner Nickel,  Martin Schoenert
                   ##    #  Johannes Meier, Alex Wegner,    Thomas Bischops
                  ##     #  Frank Celler,   Juergen Mnich,  Udo Polis
                  ###   ##  Thomas Breuer,  Goetz Pfeiffer, Hans U. Besche
                   ######   Volkmar Felsch, Heiko Theissen, Alexander Hulpke
                            Ansgar Kaup,    Akos Seress,    Erzsebet Horvath
                            Bettina Eick
                            For help enter: ?<return>
gap> S10:=SymmetricGroup(10);
Group( ( 1,10), ( 2,10), ( 3,10), ( 4,10), ( 5,10), ( 6,10), ( 7,10),
( 8,10), ( 9,10) )
gap> pi:=(1,2)(3,4)(5,6,7)(8,9,10);
( 1, 2)( 3, 4)( 5, 6, 7)( 8, 9,10)
gap> Z:=Centralizer(S10,pi);
Subgroup( Group( ( 1,10), ( 2,10), ( 3,10), ( 4,10), ( 5,10), ( 6,10),
( 7,10), ( 8,10), ( 9,10) ), [ ( 1, 2), ( 1, 3)( 2, 4), ( 3, 4), ( 5, 6, 7),
  ( 5, 8)( 6, 9)( 7,10), ( 8, 9,10) ] )
gap> Size(Z);
144
gap> nCCZ:=NumberConjugacyClasses(Z);
45
gap> tcZ:=CharTable(Z);
#W  Warning: Group has no name
Error, Function: <function> must be a function at
return Z( p ^ d ) ^ i ... in
fun( arg[1][i] ) called from
List( [ 0 .. d - 1 ], function ( i ) ... end ) called from
GF( prime ) called from
DixonInit( G, opt ) called from
arg[1].operations.CharTable( arg[1] ) called from
...
brk>