Equivariant L-function

In algebraic number theory, an equivariant Artin L-function is a function associated to a finite Galois extension of global fields created by packaging together the various Artin L-functions associated with the extension. Each extension has many traditional Artin L-functions associated with it, corresponding to the characters of representations of the Galois group. By contrast, each extension has a unique corresponding equivariant L-function.

Equivariant L-functions have become increasingly important as a wide range of conjectures and theorems in number theory have been developed around them. Among these are the Brumer–Stark conjecture, the Coates-Sinnott conjecture, and a recently developed equivariant version of the main conjecture in Iwasawa theory.

References

Solomon, David (2010). "Equivariant L-functions at s=0 and s=1". Actes de la conférence "Fonctions L et arithmétique" (PDF). Publications Mathématiques de Besançon. Algèbre et Théorie des Nombres 2010. Besançon: Laboratoire de Mathématique de Besançon. pp. 129–156. Zbl 1315.11095.

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