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A174224 Number of homeomorphism classes of stable curves in the moduli space of stable curves of genus g. 1

%I #35 Oct 24 2023 03:26:26

%S 0,0,7,42,379,4555,69808,1281678,27297406

%N Number of homeomorphism classes of stable curves in the moduli space of stable curves of genus g.

%C a(g) is also the number of stable graphs of type (g,0) (see reference).

%H Melody T. Chan, <a href="https://escholarship.org/uc/item/0nm4157r">Tropical curves and metric graphs</a>, Ph. D. Dissertation, Univ. Calif. Berkeley, Spring 2012.

%H Melody Chan, <a href="http://dx.doi.org/10.2140/ant.2012.6.1133">Combinatorics of the tropical Torelli map</a>, Algebra Number Theory, 6 (2012), 1133-1169.

%H Melody Chan, <a href="https://www.math.brown.edu/~mtchan/ATOMNotes.pdf">Graph complexes and the top-weight Euler characteristic of M_(g,n)</a>, Lecture Notes, Brown University (2020).

%H Pierre Deligne and David Mumford, <a href="http://www.numdam.org/item/PMIHES_1969__36__75_0/">The irreducibility of the space of curves of given genus</a>, Inst. Hautes Études Sci. Publ. Math. No. 36, 1969, 75-109.

%H Stefano Maggiolo and Nicola Pagani, <a href="http://people.sissa.it/~maggiolo/boundary/">Boundary graph computer for the moduli space of stable pointed curves</a>. (includes program to compute a(n))

%e a(0) = a(1) = 0 because there are no stable curves of genus 0 or 1.

%Y Cf. A007827.

%K nonn,more,hard

%O 0,3

%A _Stefano Maggiolo_, Nov 27 2010

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