Prefer a chat interface with context about you and your work?
Functions and differentials on the non-split Cartan modular curve of level 11
The genus $4$ modular curve $X_{ns}(11)$ attached to a non-split Cartan group of level $11$ admits a model defined over $\mathbb {Q}$. We compute generators for its function field in terms of Siegel modular functions. We also show that its Jacobian is isomorphic over $\mathbb {Q}$ to the new part …