Abstract
We show that for any nonzero class in in a rational manifold , is represented by a nonorientable embedded Lagrangian surface (for some symplectic structure) if and only if , where denotes the mod valued Pontryagin square of .
Citation
Bo Dai. Chung-I Ho. Tian-Jun Li. "Nonorientable Lagrangian surfaces in rational $4$–manifolds." Algebr. Geom. Topol. 19 (6) 2837 - 2854, 2019. https://doi.org/10.2140/agt.2019.19.2837
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