On the graded ring of Siegel modular forms of degree two with respect to a non-split symplectic group

TL;DR

This paper explicitly describes the structure of the graded ring of Siegel modular forms of degree two associated with a non-split symplectic group, advancing understanding of modular forms in this context.

Contribution

It provides an explicit description of the graded ring of Siegel modular forms for a non-split symplectic group, a previously less understood case.

Findings

Explicit structure of the graded ring obtained

New insights into modular forms for non-split groups

Foundation for further research in automorphic forms

Abstract

We will give the graded ring of Siegel modular forms of degree two with respect to a non-split symplectic group explicitly.