GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
############################################################################# ## ## SimplicialSet.gd SCO package Simon Goertzen ## ## Copyright 2007-2008 Lehrstuhl B für Mathematik, RWTH Aachen ## ## Declaration stuff for SCO. ## ############################################################################# ## DeclareCategory( "IsSimplicialSet", IsAttributeStoringRep ); DeclareOperation( "SimplicialSet", [ IsOrbifoldTriangulation ] ); DeclareOperation( "SimplicialSet", [ IsSimplicialSet, IsInt ] ); DeclareOperation( "ComputeNextDimension", [ IsSimplicialSet ] ); DeclareOperation( "Extend", [ IsSimplicialSet, IsInt ] );