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18 Mayıs 2016, 14:30 
İstanbul Matematiksel Bilimler Merkezi Seminerleri Nur Sağlam
In this talk, we will show that the $3$-manifold $-\Sigma(2, 2g+1, 2(2g+1)n-1)$ admits a contact structure $\mu_{0}$ which is strongly fillable but not Stein fillable. We will explain how to produce $(-\Sigma(2,2g+1, 2(2g+1)n-1), \mu_{0})$ and show that $\mu_{0}$ is strongly symplectically filllable. If time permit, we will prove the non-Stein fillability of $\mu_{0}$ using the contact invariants in Heegaard-Floer theory.
Geometri, Topoloji İngilizce IMBM admin 20.03.2020 |
