Arithmetic variety

Arithmetic varieties, in the context of algebraic geometry, refer to varieties defined over number fields or more general arithmetic fields, and they can be studied using both algebraic techniques and number theoretic methods. These varieties are often associated with Diophantine equations, which seek integer or rational solutions to polynomial equations. More formally, an arithmetic variety is an algebraic variety defined over the field of rational numbers \( \mathbb{Q} \) or over more general number fields.