Alexander polynomials of special alternating links are shown to be special cases of matroid-generating polynomials f_A, whose coefficients are log-concave for bipartite graphic matroids and box-positive, hence trapezoidal, for flat totally positive matrices.
Lorentzian polynomials
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Trapezodial property of the generalized Alexander polynomial
Alexander polynomials of special alternating links are shown to be special cases of matroid-generating polynomials f_A, whose coefficients are log-concave for bipartite graphic matroids and box-positive, hence trapezoidal, for flat totally positive matrices.