Dax invariants, light bulbs, and isotopies of symplectic structures

Jianfeng Lin, Weiwei Wu, Yi Xie +1

This paper addresses several isotopy problems on $4$-manifolds. First, we classify the isotopy classes of embeddings of $\hat{I}\pounds$ in $\hat{I}\pounds \times S^2$ that are geometrically dual to $\{\mb…