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Add a bunch of trivial implications #15

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May 19, 2019
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Add a bunch of trivial implications #15

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4 changes: 4 additions & 0 deletions lib/laguna.gd
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,7 @@ DeclareInfoClass("LAGInfo");
## will be determined automatically for every group ring, created by
## the function `GroupRing'
DeclareProperty("IsGroupAlgebra", IsGroupRing);
InstallTrueMethod(IsGroupRing, IsGroupAlgebra);


#############################################################################
Expand All @@ -46,6 +47,7 @@ DeclareProperty("IsGroupAlgebra", IsGroupRing);
## will be determined automatically for every group ring, created by
## the function `GroupRing'
DeclareProperty("IsFModularGroupAlgebra", IsGroupAlgebra);
InstallTrueMethod(IsGroupAlgebra, IsFModularGroupAlgebra);


#############################################################################
Expand All @@ -56,6 +58,7 @@ DeclareProperty("IsFModularGroupAlgebra", IsGroupAlgebra);
## This property will be determined automatically for every group ring,
## created by the function `GroupRing'
DeclareProperty("IsPModularGroupAlgebra", IsFModularGroupAlgebra);
InstallTrueMethod(IsGroupAlgebra, IsPModularGroupAlgebra);


#############################################################################
Expand Down Expand Up @@ -259,6 +262,7 @@ DeclareAttribute("AugmentationIdealOfDerivedSubgroupNilpotencyIndex",
#P IsGroupOfUnitsOfMagmaRing( <U> )
##
DeclareProperty("IsGroupOfUnitsOfMagmaRing", IsGroup);
InstallTrueMethod(IsGroup, IsGroupOfUnitsOfMagmaRing);


#############################################################################
Expand Down