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D.15.14.6 grzero

Procedure from library gradedModules.lib (see gradedModules_lib).

Usage:
grzero()

Return:
graded object representing S(0)^1

Purpose:
compute presentation of S(0)^1

Example:
 
LIB "gradedModules.lib";
ring r=32003,(x,y,z),dp;
grview( grobj(freemodule(0), intvec(0:0), intvec(0:0)) );
==> Graded homomorphism: 0 <- 0, given by zero (0^2) matrix.
grview( grobj(freemodule(0), intvec(0:0)) );
==> Graded homomorphism: 0 <- 0, given by zero (0^2) matrix.
grview( grzero() );
==> Graded homomorphism: 0 <- 0, given by zero (0^2) matrix.
//  def M = grpower( grshift( grzero(), 3), 2 ); grview(M);