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arXiv · 1411.3574

Embeddings of quotient division algebras of rings of differential operators

Jason P. Bell·Colin Ingalls·Ritvik Ramkumar
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Abstract

Let $k$ be an algebraically closed field of characteristic zero, let $X$ and $Y$ be smooth irreducible algebraic curves over $k$, and let $D(X)$ and $D(Y)$ denote respectively the quotient division rings of the ring of differential operators of $X$ and $Y$. We show that if there is a $k$-algebra embedding of $D(X)$ into $D(Y)$ then the genus of $X$ must be less than or equal to the genus of $Y$, answering a question of the first-named author and Smoktunowicz.

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Jason P. Bell, Colin Ingalls, Ritvik Ramkumar. 2014-11-13. Embeddings of quotient division algebras of rings of differential operators. https://arxiv.org/abs/1411.3574

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