On the intersection forms of closed 4-manifolds.
Alberto Cavicchioli, Friedrich Hegenbarth (1992)
Publicacions Matemàtiques
Similarity:
Given a closed 4-manifold M, let M* be the simply-connected 4-manifold obtained from M by killing the fundamental group. We study the relation between the intersection forms λ and λ. Finally some topological consequences and examples are described.