1997/07/24 by Eckhard Meinrenken, Meinrenken, Eckhard, Chris Woodward +1
Mathematics · #Advanced Algebra and Geometry #Differential Geometry (math.DG) #FOS: Mathematics #Geometric and Algebraic Topology #Homotopy and Cohomology in Algebraic Topology
paper · pdf · doi:10.48550/arxiv.dg-ga/9707019
openalex publication_date 1997/07/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We construct an oriented cobordism between moduli spaces of flat connections on the three holed sphere and disjoint unions of toric varieties, together with a closed two-form which restricts to the symplectic forms on the ends. As applications, we obtain formulas for mixed Pontrjagin numbers and Witten's formulas for symplectic volumes.