A filtration question on Belyi pairs and dessins

Details A filtration question on Belyi pairs and dessins A filtration question on Belyi pairs and dessins

2009-09-28

arxiv.org/abs/0909.5197v1

Mathematics

Algebraic Geometry

3 pages, no figures

Scientific paper

A Bely\u{\i} pair is a holomorphic map from a Riemann surface to $S^2$ with additional properties. A dessin d'enfants is a bipartite graph with additional structure. It is well know that there is a bijection between Bely\u{i} pairs and dessins d'enfants. Vassiliev has defined a filtration on formal sums of isotopy classes of knots. Motivated by this, we define a filtration on formal sums of Bely\u{\i} pairs, and another on dessin d'enfants. We ask if the two definitions give the same filtration.

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