On trees covering chains or stars
Algebraic Geometry
2008-01-15 v2 Combinatorics
Abstract
In this paper, in the context of the ``Dessins d'enfants'' theory, we give a combinatorial criterion for a plane tree to cover a tree from the classes of "chains" or "stars''. Besides, we discuss some applications of this result which are related to the arithmetical theory of torsion on curves.
Keywords
Cite
@article{arxiv.math/0401201,
title = {On trees covering chains or stars},
author = {F. Pakovich},
journal= {arXiv preprint arXiv:math/0401201},
year = {2008}
}
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published version