GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
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##
## Koszul.gd GradedModules package
##
## Copyright 2007-2010, Mohamed Barakat, University of Kaiserslautern
## Markus Lange-Hegermann, RWTH Aachen
##
## Declarations for functors L and R
##
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#
# global functions and operations:
#
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# basic operations
DeclareOperation( "RepresentationMatrixOfKoszulId",
[ IsInt, IsHomalgModule, IsHomalgRing ] );
DeclareOperation( "RepresentationMatrixOfKoszulId",
[ IsInt, IsHomalgModule ] );
DeclareOperation( "RepresentationMatrixOfKoszulId",
[ IsHomalgElement, IsHomalgModule, IsHomalgRing ] );
DeclareOperation( "RepresentationMatrixOfKoszulId",
[ IsHomalgElement, IsHomalgModule ] );
DeclareGlobalFunction( "_Functor_RepresentationObjectOfKoszulId_OnGradedModules" );
DeclareGlobalFunction( "_Functor_RepresentationObjectOfKoszulId_OnGradedMaps" );
DeclareGlobalVariable( "Functor_RepresentationObjectOfKoszulId_ForGradedModules" );
DeclareOperation( "RepresentationObjectOfKoszulId",
[ IsList, IsStructureObjectOrObject ] );
DeclareOperation( "RepresentationObjectOfKoszulId",
[ IsHomalgElement, IsStructureObjectOrObject ] );
DeclareOperation( "MapFromHomogeneousPartofModuleToHomogeneousPartOfKoszulRightAdjoint",
[ IsInt, IsHomalgGradedModule ] );
DeclareOperation( "MapFromHomogeneousPartofModuleToHomogeneousPartOfKoszulRightAdjoint",
[ IsHomalgElement, IsHomalgGradedModule ] );
DeclareOperation( "RepresentationMapOfKoszulId",
[ IsInt, IsHomalgModule, IsHomalgRing ] );
DeclareOperation( "RepresentationMapOfKoszulId",
[ IsInt, IsHomalgModule ] );
DeclareOperation( "RepresentationMapOfKoszulId",
[ IsHomalgElement, IsHomalgModule, IsHomalgRing ] );
DeclareOperation( "RepresentationMapOfKoszulId",
[ IsHomalgElement, IsHomalgModule ] );
DeclareOperation( "KoszulAdjoint",
[ IsStructureObjectOrObject, IsHomalgRing, IsObject, IsObject ] );
DeclareOperation( "KoszulAdjoint",
[ IsStructureObjectOrObject, IsObject, IsObject ] );
DeclareOperation( "KoszulRightAdjointOnMorphisms",
[ IsHomalgGradedMap, IsHomalgRing, IsObject, IsObject ] );
DeclareOperation( "KoszulLeftAdjointOnMorphisms",
[ IsHomalgGradedMap, IsHomalgRing, IsObject, IsObject ] );
DeclareOperation( "KoszulAdjointOnMorphisms",
[ IsHomalgGradedMap, IsHomalgRing, IsObject, IsObject, IsHomalgComplex, IsHomalgComplex ] );
DeclareOperation( "KoszulAdjointOnMorphisms",
[ IsHomalgGradedMap, IsObject, IsObject ] );
####################################
#
# functors:
#
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DeclareGlobalFunction( "_Functor_KoszulRightAdjoint_OnGradedModules" );
DeclareGlobalFunction( "_Functor_KoszulRightAdjoint_OnGradedMaps" );
DeclareGlobalVariable( "Functor_KoszulRightAdjoint_ForGradedModules" );
DeclareOperation( "KoszulRightAdjoint",
[ IsStructureObjectOrObject, IsHomalgRing, IsObject, IsObject ] );
DeclareOperation( "KoszulRightAdjoint",
[ IsStructureObjectOrObject, IsObject, IsObject ] );
DeclareOperation( "KoszulRightAdjoint",
[ IsHomalgGradedMap, IsHomalgRing, IsObject, IsObject ] );
DeclareOperation( "KoszulRightAdjoint",
[ IsHomalgGradedMap, IsObject, IsObject ] );
DeclareGlobalFunction( "_Functor_KoszulLeftAdjoint_OnGradedModules" );
DeclareGlobalFunction( "_Functor_KoszulLeftAdjoint_OnGradedMaps" );
DeclareGlobalVariable( "Functor_KoszulLeftAdjoint_ForGradedModules" );
DeclareOperation( "KoszulLeftAdjoint",
[ IsStructureObjectOrObject, IsHomalgRing, IsObject, IsObject ] );
DeclareOperation( "KoszulLeftAdjoint",
[ IsStructureObjectOrObject, IsObject, IsObject ] );
DeclareOperation( "KoszulLeftAdjoint",
[ IsHomalgGradedMap, IsHomalgRing, IsObject, IsObject ] );
DeclareOperation( "KoszulLeftAdjoint",
[ IsHomalgGradedMap, IsObject, IsObject ] );