2021/03/25 by Selman Akbulut, Akbulut, Selman
Mathematics · #Mathematical Dynamics and Fractals #Geometric and Algebraic Topology #Geometric Analysis and Curvature Flows
paper · pdf · doi:10.48550/arxiv.2103.13967
By using corks we construct diffeomorphic ribbon disks D⊂ B4, which are non-isotopic rel boundary to each other.