GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
############################################################################# ## ## HomalgFiltration.gd Modules package Mohamed Barakat ## ## Copyright 2007-2010, Mohamed Barakat, University of Kaiserslautern ## ## Declaration stuff for a filtration. ## ############################################################################# #################################### # # global functions and operations: # #################################### # basic operations: DeclareOperation( "HomalgRing", [ IsHomalgFiltration ] ); DeclareOperation( "MatrixOfFiltration", [ IsHomalgFiltration, IsInt ] ); DeclareOperation( "MatrixOfFiltration", [ IsHomalgFiltration ] ); DeclareOperation( "BasisOfModule", [ IsHomalgFiltration ] ); DeclareOperation( "DecideZero", [ IsHomalgFiltration ] ); DeclareOperation( "OnLessGenerators", [ IsHomalgFiltration ] ); DeclareOperation( "ByASmallerPresentation", [ IsHomalgFiltration ] );