It is shown that the number of alternating knots of given genus g > 1 grows as a polynomial of degree 6g - 4 in the crossing number. The leading coefficient of the polynomial, which depends on the parity of the crossing number, is related to planar trivalent graphs with a Bieulerian path. The rate of growth of the number of such graphs is estimated.
机构:
Osaka Prefecture Univ, Fac Liberal Arts & Sci, Naka Ku, Sakai, Osaka 5998531, JapanOsaka Prefecture Univ, Fac Liberal Arts & Sci, Naka Ku, Sakai, Osaka 5998531, Japan