From 8b935b07aad48c58c11a11104b7f7b1de9cd7576 Mon Sep 17 00:00:00 2001 From: Alexander Hulpke Date: Tue, 27 Dec 2022 08:01:13 -0700 Subject: [PATCH] Subsequent example changes --- lib/ctblfuns.gd | 2 +- lib/factgrp.gd | 1 + lib/grp.gd | 5 ++--- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/lib/ctblfuns.gd b/lib/ctblfuns.gd index 76b49784db..6b388d548d 100644 --- a/lib/ctblfuns.gd +++ b/lib/ctblfuns.gd @@ -1013,7 +1013,7 @@ DeclareAttribute( "TrivialCharacter", IsGroup ); ## gap> NaturalCharacter( Group( [ [ 0, -1 ], [ 1, -1 ] ] ) ); ## Character( CharacterTable( Group([ [ [ 0, -1 ], [ 1, -1 ] ] ]) ), ## [ 2, -1, -1 ] ) -## gap> d8:= DihedralGroup( 8 );; hom:= IsomorphismPermGroup( d8 );; +## gap> d8:= DihedralGroup( 8 );; hom:= RegularActionHomomorphism( d8 );; ## gap> NaturalCharacter( hom ); ## Character( CharacterTable( ), ## [ 8, 0, 0, 0, 0 ] ) diff --git a/lib/factgrp.gd b/lib/factgrp.gd index 9be74a06cc..ac2d696221 100644 --- a/lib/factgrp.gd +++ b/lib/factgrp.gd @@ -232,6 +232,7 @@ DeclareSynonym( "ImproveOperationDegreeByBlocks", ## called internally might try a degree reduction.) ##

## iso:=RegularActionHomomorphism(SymmetricGroup(4));; ## gap> image:= Image( iso );; NrMovedPoints( image ); ## 24 ## gap> small:= SmallerDegreePermutationRepresentation( image );; diff --git a/lib/grp.gd b/lib/grp.gd index 684b829ae8..c5c4f7edab 100644 --- a/lib/grp.gd +++ b/lib/grp.gd @@ -4279,10 +4279,9 @@ DeclareAttribute( "IsomorphismSpecialPcGroup", IsGroup ); ## gap> g:=SmallGroup(24,12); ## ## gap> iso:=IsomorphismPermGroup(g); -## +## [ f1, f2, f3, f4 ] -> [ (2,3), (2,3,4), (1,2)(3,4), (1,3)(2,4) ] ## gap> Image(iso,g.3*g.4); -## (1,12)(2,16)(3,19)(4,5)(6,22)(7,8)(9,23)(10,11)(13,24)(14,15)(17, -## 18)(20,21) +## (1,4)(2,3) ## ]]> ##

## In many cases the permutation representation constructed by