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A square root of Hurwitz numbers (1807.03631v2)
Published 7 Jul 2018 in math.AG and math.SG
Abstract: We exhibit a generating function of spin Hurwitz numbers analogous to (disconnected) double Hurwitz numbers that is a tau function of the two-component BKP (2-BKP) hierarchy and is a square root of a tau function of the two-component KP (2-KP) hierarchy defined by related Hurwitz numbers.
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