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GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it

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#############################################################################
##
##  Macaulay2.gd              RingsForHomalg package          Daniel Robertz
##
##  Copyright 2007-2008 Lehrstuhl B für Mathematik, RWTH Aachen
##
##  Declaration stuff for the external computer algebra system Macaulay2.
##
#############################################################################

####################################
#
# global variables:
#
####################################

DeclareGlobalVariable( "HOMALG_IO_Macaulay2" );

DeclareGlobalVariable( "Macaulay2Macros" );

####################################
#
# global functions and operations:
#
####################################

DeclareGlobalFunction( "_Macaulay2_SetRing" );

DeclareGlobalFunction( "_Macaulay2_SetInvolution" );

DeclareGlobalFunction( "_Macaulay2_multiple_delete" );

DeclareGlobalFunction( "InitializeMacaulay2Macros" );

# constructor methods:

DeclareGlobalFunction( "RingForHomalgInMacaulay2" );

DeclareGlobalFunction( "HomalgRingOfIntegersInMacaulay2" );

DeclareGlobalFunction( "HomalgFieldOfRationalsInMacaulay2" );

# basic operations: