3 papers
math.NT2004
Images of isogeny classes on modular elliptic curves
Florian Breuer
Let K be a number field and E/K a modular elliptic curve, with modular parametrization defined over K. The purpose of this note is to study the images in E of classe…
math.NT2004
CM points on products of Drinfeld modular curves
Florian Breuer
Let X be a product of Drinfeld modular curves over a general base ring A of odd characteristic. We classify those subvarieties of X which contain a Zariski-dense set of CM points.…
nlin.CD2003
Comment on ''Exceptional points and double poles of the S matrix''
C. Dembowski, B. Dietz, H. -D. Graef +4
In a recent paper [Phys. Rev. E 67, 026204 (2003)], Rotter calculates the geometric phases that are picked up by the eigenvectors of a two-state quantum system when an exceptional…