2019/09/22 by Mak, Cheuk Yu, Smith, Ivan · 2 citations
#53D12 #53D40 #Algebraic Geometry (math.AG) #FOS: Mathematics #Symplectic Geometry (math.SG)
paper · doi:10.48550/arxiv.1909.09924
Let ω denote an area form on S2. Consider the closed symplectic 4-manifold M=(S2× S2, Aω⊕ a ω) with 0