**Computations**

·
HilbertSeriesS1.nb (H.-C. Herbig and C. Seaton)

Implementation on *Mathematica* of an algorithm to compute the Hilbert
series of the graded algebra of regular functions on a symplectic
quotient of a unitary circle representation. The algorithm is described in Section 4 of arXiv:1302.2662
[math.SG].