The ring of $D_4$ triality invariants
Number Theory
2025-04-02 v1 High Energy Physics - Theory
Algebraic Geometry
Abstract
triality invariants are modular forms as well as polynomial invariants for a fiber product of the modular group and the Weyl group of type . We show that the ring of triality invariants satisfying a certain cusp condition is isomorphic to the ring of joint covariants of a binary cubic and a binary quadratic form.
Cite
@article{arxiv.2504.00546,
title = {The ring of $D_4$ triality invariants},
author = {Kazuhiro Sakai},
journal= {arXiv preprint arXiv:2504.00546},
year = {2025}
}
Comments
28 pages