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<p class="MsoNormal">Dear Colleagues,<o:p></o:p></p>
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<p class="MsoNormal">Marco Golla (University of Oxford) will give a talk at 11:00 am on Friday, November 10 at the Istanbul Center for Mathematical Sciences (IMBM).<o:p></o:p></p>
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<p class="MsoNormal">Title: An obstruction to planarity of contact structures<o:p></o:p></p>
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<p class="MsoNormal">Abstract: We give new obstructions to the existence of planar open books on contact structures, in terms of the homology of their fillings. I will talk about applications to links of surface singularities, Seifert fibred spaces, and integer
homology spheres. No prior knowledge of contact or symplectic topology will be assumed. This is joint work with Paolo Ghiggini and Olga Plamenevskaya.<o:p></o:p></p>
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<p class="MsoNormal">Best Regards,<o:p></o:p></p>
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<p class="MsoNormal">Burak Ozbagci<o:p></o:p></p>
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