Automorphic forms are a generalization of classical modular forms and are an important object of study in number theory, representation theory, and the theory of automorphic representations. They can be viewed as functions that possess certain symmetry properties and are defined on the upper half-plane or on more general spaces associated with algebraic groups. ### Key Concepts 1. **Underlying Groups**: Automorphic forms are often associated with reductive algebraic groups over various fields (e.g., number fields or function fields).
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