Generalized class invariants with `Thetanullwerte\'
Osmanbey Uzunkol · TURKISH JOURNAL OF MATHEMATICS · 2013
We introduce generalized class invariants as quotients of Thetanullwerte, which realize the computation of class polynomials more efficiently than as quotients of values of the Dedekind \eta-function. Furthermore, we prove that these invariants are units in the corresponding class field as most of their classical counterparts.