Symplectic Monodromy at radius 0 and equimultiplicity of families of hypersurfaces with constant Milnor number
Javier Fernández de Bobadilla and Tomasz PelkaAGDT Seminar
on 6/10/22
Abstract: We construct an example of a cork that remains exotic after taking a connected sum with S^2×S^2. Combined with a work of Akbulut-Ruberman, this implies the existence of an exotic pair of contractible 4-manifolds which remains absolutely exotic after taking a connected sum with S^2 × S^2.