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The boundary length and point spectrum enumeration of partial chord diagrams using cut and join recursion

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arxiv 1612.06482 v2 pith:O6LOZD4U submitted 2016-12-20 math-ph hep-thmath.COmath.MPq-bio.QM

The boundary length and point spectrum enumeration of partial chord diagrams using cut and join recursion

classification math-ph hep-thmath.COmath.MPq-bio.QM
keywords boundaryspectrumlengthpointpartialchorddiagramsrecursion
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We introduce the boundary length and point spectrum, as a joint generalization of the boundary length spectrum and boundary point spectrum in arXiv:1307.0967. We establish by cut-and-join methods that the number of partial chord diagrams filtered by the boundary length and point spectrum satisfies a recursion relation, which combined with an initial condition determines these numbers uniquely. This recursion relation is equivalent to a second order, non-linear, algebraic partial differential equation for the generating function of the numbers of partial chord diagrams filtered by the boundary length and point spectrum.

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