Coding the real locus of X_0+(N)
Number Theory
2017-03-08 v2
Abstract
Let X_0+(N) be the Atkin-Lehner quotient of the modular curve X_0(N) associated to the Fricke involution wN. Assume N > 3 prime and endow the real locus X+ 0 (N)(R) with the real topology. In this paper we revisit a special case of result due to Ogg on the connected components of X_0+(N)(R). Then we obtain a formula for the homology class of each connected component of X_0+(N)(R) in terms of Manin symbols.
Cite
@article{arxiv.math/0603121,
title = {Coding the real locus of X_0+(N)},
author = {Carlos Castano-Bernard},
journal= {arXiv preprint arXiv:math/0603121},
year = {2017}
}
Comments
It contains several errors and inaccuracies