Presents an exact computation method for the hafnian of two-parameter matrices via a product formula over submatrices, with explicit applications to Toeplitz cases and new formulas for linear chord diagrams.
Enumeration of chord diagrams without loops and parallel chords // The Electronic Journal of Combinatorics
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Hafnian of two-parameter matrices
Presents an exact computation method for the hafnian of two-parameter matrices via a product formula over submatrices, with explicit applications to Toeplitz cases and new formulas for linear chord diagrams.