| 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);
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