= Arithmetic group
{wiki=Arithmetic_group}
An arithmetic group is a type of group that arises in the context of number theory and algebraic geometry, particularly in the study of algebraic varieties over number fields or bipartite rings. The term often refers to groups of automorphisms of algebraic structures that preserve certain arithmetic properties or structures. A common example is the **arithmetic fundamental group of a variety**, which captures information about its algebraic and topological structure.
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