S. Eliahou

most citedSigned permutations and the four color theorem

3 citations · 3 across the 2 of their papers we have counts for

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math.CO2012

On the number of numerical semigroups of prime power genus

Shalom Eliahou, Jorge Ramirez Alfonsin

Given $g \geq 1$ , the number $n (g)$ of numerical semigroups $S \subset N$ of genus $∣ N ∖ S ∣$ equal to $g$ is the subject of challenging conjectures of Bras-Amorós. In this…

math.CO2006★ 3 cited

Signed permutations and the four color theorem

Shalom Eliahou, Cedric Lecouvey

To each permutation $σ$ in $S_{n}$ we associate a triangulation of a fixed $(n + 2)$ -gon. We then determine the fibers of this association and show that they coincide with the sylves…