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Singular units and isogenies between CM elliptic curves.

Authors :
Li, Yingkun
Source :
Compositio Mathematica. May2021, Vol. 157 Issue 5, p1022-1035. 14p.
Publication Year :
2021

Abstract

In this note, we will apply the results of Gross–Zagier, Gross–Kohnen–Zagier and their generalizations to give a short proof that the differences of singular moduli are not units. As a consequence, we obtain a result on isogenies between reductions of CM elliptic curves. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
0010437X
Volume :
157
Issue :
5
Database :
Academic Search Index
Journal :
Compositio Mathematica
Publication Type :
Academic Journal
Accession number :
150390186
Full Text :
https://doi.org/10.1112/S0010437X21007077