Abstract
We show that there exist infinitely many simply connected compact Stein 4-manifolds with $b_2 = 2$ such that they are all homeomorhic but mutually non-diffeomorphic, and they are Stein fillings of the same contact $3$-manifold on their boundaries. We also describe their handlebody pictures.
Citation
Selman Akbulut. Kouichi Yasui. "Infinitely many small exotic Stein fillings." J. Symplectic Geom. 12 (4) 673 - 684, December 2014.
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