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Quelle  congruence04.tst   Sprache: unbekannt

 
Spracherkennung für: .tst vermutete Sprache: Unknown {[0] [0] [0]} [Methode: Schwerpunktbildung, einfache Gewichte, sechs Dimensionen]

# Congruence, chapter 4
#
# DO NOT EDIT THIS FILE - EDIT EXAMPLES IN THE SOURCE INSTEAD!
#
# This file has been generated by AutoDoc. It contains examples extracted from
# the package documentation. Each example is preceded by a comment which gives
# the name of a GAPDoc XML file and a line range from which the example were
# taken. Note that the XML file in turn may have been generated by AutoDoc
# from some other input.
#
gap> START_TEST("congruence04.tst");

# doc/gens.xml:30-45
gap> FareySymbol(PrincipalCongruenceSubgroup(8));
[ infinity, 01/41/33/82/51/23/55/82/33/415/44/3
  11/87/53/28/513/85/37/429/47/319/812/55/213/5
  21/88/311/4313/410/327/817/57/218/529/811/315/44
  17/413/39/214/319/4521/416/311/217/323/4625/4
  19/313/220/327/4729/422/315/223/331/48, infinity ]
11710263218192730522132826202129277
  3316312822233329944530312425323312
  6671918158892120101111122322131414
  15252416171 ]
gap> FareySymbol(CongruenceSubgroupGamma0(20));
[ infinity, 01/51/42/73/101/32/51/23/52/33/44/51
  infinity ]
13467752236451 ]  

# doc/gens.xml:126-136
gap> H:=CongruenceSubgroupGamma0(5); 
<congruence subgroup CongruenceSubgroupGamma_0(5) in SL_2(Z)>
gap> fs:=FareySymbol(H);
[ infinity, 01/21, infinity ]
1, "even", "even", 1 ]
gap> gfs:=GeneralizedFareySequence(fs);
[ infinity, 01/21, infinity ]
gap> MatrixByEvenInterval(gfs,2);      
[ [ 2, -1 ], [ 5, -2 ] ]

# doc/gens.xml:148-154
gap> fs_oo:=FareySymbolByData([infinity,0,infinity],["odd","odd"]);;
gap> gfs_oo:=GeneralizedFareySequence(fs_oo);
[ infinity, 0, infinity ]
gap> MatrixByOddInterval(gfs_oo,1);
[ [ -1, -1 ], [ 10 ] ]

# doc/gens.xml:166-171
gap> fs_free:=FareySymbolByData([infinity,0,1,2,infinity],[1,2,2,1]);;
gap> gfs_free:=GeneralizedFareySequence(fs_free);;
gap> MatrixByFreePairOfIntervals(gfs_free,2,3);                                                        
[ [ 3, -2 ], [ 2, -1 ] ]

# doc/gens.xml:183-193
gap> fs_eo:=FareySymbolByData([infinity,0,infinity],["even","odd"]);;
gap> GeneratorsByFareySymbol(last);                                  
[ [ [ 0, -1 ], [ 10 ] ], [ [ 0, -1 ], [ 1, -1 ] ] ]
gap> GeneratorsByFareySymbol(fs); 
[ [ [ 11 ], [ 01 ] ], [ [ 2, -1 ], [ 5, -2 ] ], [ [ 3, -2 ], [ 5, -3 ] ] ]
gap> GeneratorsByFareySymbol(fs_oo);
[ [ [ -1, -1 ], [ 10 ] ], [ [ 0, -1 ], [ 1, -1 ] ] ]
gap> GeneratorsByFareySymbol(fs_free);                                                        
[ [ [ 12 ], [ 01 ] ], [ [ 3, -2 ], [ 2, -1 ] ] ]

# doc/gens.xml:205-229
gap> G:=PrincipalCongruenceSubgroup(2);
<principal congruence subgroup of level 2 in SL_2(Z)>
gap> FareySymbol(G);
[ infinity, 012, infinity ]
2112 ]
gap> GeneratorsOfGroup(G);
#I  Using the Congruence package for GeneratorsOfGroup ...
[ [ [ 12 ], [ 01 ] ], [ [ 3, -2 ], [ 2, -1 ] ] ]
gap> H:=CongruenceSubgroupGamma0(5);        
<congruence subgroup CongruenceSubgroupGamma_0(5) in SL_2(Z)>
gap> GeneratorsOfGroup(H);
#I  Using the Congruence package for GeneratorsOfGroup ...
[ [ [ 11 ], [ 01 ] ], [ [ 2, -1 ], [ 5, -2 ] ], [ [ 3, -2 ], [ 5, -3 ] ] ]
gap> I:=IntersectionOfCongruenceSubgroups(PrincipalCongruenceSubgroup(2),CongruenceSubgroupGamma0(3));
<intersection of congruence subgroups of resulting level 6 in SL_2(Z)>
gap> FareySymbol(I);
[ infinity, 01/31/22/314/33/25/32, infinity ]
1543223451 ]
gap> GeneratorsOfGroup(I);                                                          
#I  Using the Congruence package for GeneratorsOfGroup ...
[ [ [ 12 ], [ 01 ] ], [ [ 11, -2 ], [ 6, -1 ] ], 
  [ [ 19, -8 ], [ 12, -5 ] ], [ [ 17, -10 ], [ 12, -7 ] ], 
  [ [ 7, -6 ], [ 6, -5 ] ] ]

# doc/gens.xml:250-257
gap> IndexInPSL2ZByFareySymbol(fs);
6
gap> IndexInPSL2ZByFareySymbol(fs_oo);
2
gap> IndexInPSL2ZByFareySymbol(fs_free);
6

#
gap> STOP_TEST("congruence04.tst", 1);

[Dauer der Verarbeitung: 0.14 Sekunden, vorverarbeitet 2026-06-17]

                                                                                                                                                                                                                                                                                                                                                                                                     


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