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Changed generators in manual examples
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doc/tut/group.xml

Lines changed: 5 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -833,9 +833,9 @@ usual way we now look for the subgroups above <C>u105</C>.
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gap> blocks := Blocks( a8, orb );; Length( blocks );
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15
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gap> blocks[1];
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[ (1,2)(3,4)(5,6)(7,8), (1,3)(2,4)(5,8)(6,7), (1,4)(2,3)(5,7)(6,8),
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(1,5)(2,6)(3,8)(4,7), (1,6)(2,5)(3,7)(4,8), (1,7)(2,8)(3,6)(4,5),
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(1,8)(2,7)(3,5)(4,6) ]
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[ (1,2)(3,4)(5,6)(7,8), (1,3)(2,4)(5,7)(6,8), (1,4)(2,3)(5,8)(6,7),
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(1,5)(2,6)(3,7)(4,8), (1,6)(2,5)(3,8)(4,7), (1,7)(2,8)(3,5)(4,6),
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(1,8)(2,7)(3,6)(4,5) ]
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]]></Example>
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<P/>
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To find the subgroup of index 15 we again use closure. Now we must be a
@@ -1175,8 +1175,8 @@ gap> aut := AutomorphismGroup( p );; NiceMonomorphism(aut);;
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gap> niceaut := NiceObject( aut );
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Group([ (1,4,2,3), (1,5,4)(2,6,3), (1,2)(3,4), (3,4)(5,6) ])
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gap> IsomorphismGroups( niceaut, SymmetricGroup( 4 ) );
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[ (1,4,2,3), (1,5,4)(2,6,3), (1,2)(3,4), (3,4)(5,6) ] ->
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[ (1,4,3,2), (1,4,2), (1,3)(2,4), (1,4)(2,3) ]
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[ (1,4,2,3), (1,5,4)(2,6,3), (1,2)(3,4), (3,4)(5,6) ] ->
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[ (1,4,2,3), (1,2,3), (1,2)(3,4), (1,3)(2,4) ]
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]]></Example>
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<P/>
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The range of a nice monomorphism is in most cases a permutation group,

lib/ctbl.gd

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -4380,11 +4380,11 @@ DeclareGlobalFunction( "NormalSubgroupClasses" );
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## Character( CharacterTable( S4 ), [ 3, 1, -1, 0, -1 ] ),
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## Character( CharacterTable( S4 ), [ 1, 1, 1, 1, 1 ] ) ]
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## gap> kernel:= KernelOfCharacter( irr[3] );
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## Group([ (1,2)(3,4), (1,3)(2,4) ])
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## Group([ (1,2)(3,4), (1,4)(2,3) ])
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## gap> HasNormalSubgroupClassesInfo( tbl );
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## true
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## gap> NormalSubgroupClassesInfo( tbl );
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## rec( nsg := [ Group([ (1,2)(3,4), (1,3)(2,4) ]) ],
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## rec( nsg := [ Group([ (1,2)(3,4), (1,4)(2,3) ]) ],
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## nsgclasses := [ [ 1, 3 ] ], nsgfactors := [ ] )
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## gap> ClassPositionsOfNormalSubgroup( tbl, kernel );
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## [ 1, 3 ]

lib/teaching.g

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -194,9 +194,9 @@ DeclareGlobalFunction("CosetDecomposition");
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## <A>H</A>-conjugacy.
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## <Example><![CDATA[
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## gap> AllHomomorphismClasses(SymmetricGroup(4),SymmetricGroup(3));
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## [ [ (2,4,3), (1,2,3,4) ] -> [ (), () ],
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## [ (2,4,3), (1,2,3,4) ] -> [ (), (1,2) ],
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## [ (2,4,3), (1,2,3,4) ] -> [ (1,2,3), (1,2) ] ]
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## [ [ (1,2,3), (2,4) ] -> [ (), () ],
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## [ (1,2,3), (2,4) ] -> [ (), (1,2) ],
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## [ (1,2,3), (2,4) ] -> [ (1,2,3), (1,2) ] ]
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## ]]></Example>
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## </Description>
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## </ManSection>

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