Polynomial morphisms for products of projective spaces

This class builds on the projective space class and its point and morphism classes.

EXAMPLES:

sage: P1xP1.<x,y, u,v> = ProductProjectiveSpaces(QQ,[1,1])
sage: H = End(P1xP1)
sage: H([x^2*u, y^2*v, x*v^2, y*u^2])
Scheme endomorphism of Product of projective spaces P^1 x P^1 over Rational Field
  Defn: Defined by sending (x : y , u : v) to 
        (x^2*u : y^2*v , x*v^2 : y*u^2).
class sage.schemes.product_projective.morphism.ProductProjectiveSpaces_morphism_ring(parent, polys, check=True)

Bases: sage.schemes.generic.morphism.SchemeMorphism_polynomial

The class of morphisms on products of projective spaces. The components are projective space morphisms.

EXAMPLES:

sage: T.<x,y,z,w,u> = ProductProjectiveSpaces([2,1],QQ)
sage: H = T.Hom(T)
sage: H([x^2,y^2,z^2,w^2,u^2])
Scheme endomorphism of Product of projective spaces P^2 x P^1 over Rational Field
  Defn: Defined by sending (x : y : z , w : u) to 
        (x^2 : y^2 : z^2 , w^2 : u^2).

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