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Cohomology pairings on the symplectic reduction of products

机译:产品辛辛约化的同调配对

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摘要

Let M be the product of two compact Hamiltonian T-spaces X and Y. We present a formula for evaluating integrals on the symplectic reduction of M by the diagonal T action. At every regular value of the moment map for X x Y, the integral is the convolution of two distributions associated to the symplectic reductions of X by T and of Y by T. Several examples illustrate the computational strength of this relationship. We also prove a linear analogue which can be used to find cohomology pairings on toric orbifolds.
机译:令M为两个紧汉密尔顿T空间X和Y的乘积。我们提供了一个公式,用于估计通过对角T作用对M的辛约简的积分。在X x Y的矩图的每个正则值处,积分是与X的T辛化约简和Y的T辛化约简相关的两个分布的卷积。几个示例说明了这种关系的计算强度。我们还证明了一个线性类似物,可用于在复曲面双折线上找到同调配对。

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