广义谎言理论与应用杂志

Differential Years Topology

Abstract

Jennifer Stewart

Topological manifolds can't have any smooth structure can't be located as PL-manifolds). All the more unequivocally, if M4 is smooth and just associated with positive clear bilinear structure, the blend of Freedman's topological outcomes and Donaldson's scientific outcomes immediately drove to rather astounding outcomes. For instance, it followed that there are uncountable numerous non-isomorphic smooth or PL structures on R4. A good hypothesis of three-layered manifolds took longer.