Title    name 2013 Korea Toric Topology Winter Worksohp     Title $T^2$-cobordism of quasitoric 4-manifolds   Speaker Soumen Sarkar   Date 2013-01-04   Host   Place Seoguipo KAL Hotel   File     Abstract : We show the $T^2$-cobordism group of the category of 4-dimensional quasitoric manifolds is generated by the $T^2$-cobordism classes of $CP^2$. We construct nice oriented $T^2$ manifolds with boundary where the boundary is the Hirzebruch surfaces. The main tool is the theory of quasitoric manifolds.

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