L'Application Canonique J:H²(X) ⊗ H²(X)->H¹(X⊗ X) n'est pas Surjective en Général

الأصل · EN

We introduce the H¹-projective property, and use it to construct a Banach space X such that the natural map J:H²(X)⊗ H²(X) -> H¹(X⊗ X) is not onto.