DedekindEta, ModularJ, ModularLambda, EisensteinG, EisensteinE, EulerQSeries
Synopsis
#include <flint/fexpr_builtin.h>DedekindEtaModularJModularLambdaEisensteinGEisensteinEEulerQSeriesModular forms and functions: the Dedekind eta function DedekindEta(tau) (\eta(\tau)), the j-invariant ModularJ(tau) (j(\tau)), the modular lambda function ModularLambda(tau) (\lambda(\tau)), the Eisenstein series EisensteinG(k, tau) (G_{k}\!\left(\tau\right)) and their normalised versions EisensteinE(k, tau) (E_{k}\!\left(\tau\right)), and the Euler function EulerQSeries(q) (\phi(q)), equal to \prod_{k \ge 1} (1 - q^k).
Cite this page
The FLINT team, “DedekindEta, ModularJ, ModularLambda, EisensteinG, EisensteinE, EulerQSeries (fexpr_builtin.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/fexpr_builtin/DedekindEta.html (generated 2026-10-20).
@misc{flint-doc-fexpr-builtin-DedekindEta,
author = {{The FLINT team}},
title = {{DedekindEta, ModularJ, ModularLambda, EisensteinG, EisensteinE, EulerQSeries (fexpr\_builtin.h)}},
howpublished = {FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev},
year = {2026},
url = {https://flintlib.org/doc/fexpr_builtin/DedekindEta.html},
note = {Generated 2026-10-20}
}