A toric map is a morphism f : X →Y between normal toric varieties that induces a morphism of algebraic groups g : TX →TY such that f is TX-equivariant with respect to the TX-action on Y induced by g. Every toric map f : X →Y corresponds to a unique map fN : NX →NY between the underlying lattices.
Although the primary method for creating a toric map is map(NormalToricVariety,NormalToricVariety,Matrix), there are a few other constructors.
Having made a toric map, one can access its basic invariants or test for some elementary properties by using the following methods.
Several functorial aspects of normal toric varieties are also available.