Weil group

E244843

The Weil group is an extension of the absolute Galois group introduced by André Weil to refine class field theory and play a central role in the formulation of the local and global Langlands correspondences.

All labels observed (4)

Label Occurrences
Weil group canonical 2
Weil group of a global field 1
Weil group of a local field 1

How this entity was disambiguated

Statements (44)

Predicate Object
instanceOf mathematical group
object in arithmetic geometry
object in number theory
topological group
contains absolute Galois group
definedFor global field
local field
number field
extensionOf Weil group self-linksurface differs
surface form: absolute Galois group
fieldOfStudy Langlands program
class field theory
number theory
generalizationOf Weil group self-linksurface differs
surface form: Weil group of a global field

Weil group self-linksurface differs
surface form: Weil group of a local field
hasElementType Frobenius element
surface form: Frobenius elements
hasPurpose to formulate Langlands correspondences
to refine class field theory
hasVariant Weil–Deligne group
global Weil group
local Weil group
introducedBy André Weil
introducedInContextOf class field theory
namedAfter André Weil
playsRoleIn definition of L-functions
parameterization of automorphic representations
refines absolute Galois group
relatedConcept Artin reciprocity law
surface form: Artin reciprocity

Galois representation
L-parameter
Weil representation
relatedTo Galois group
Hecke characters
automorphic forms
idèle class group
motivic Galois group
topology locally compact topology
non-Hausdorff topology
usedBy Michael Artin
Pierre Deligne
Robert Langlands
usedIn global Langlands correspondence
global class field theory
Langlands program
surface form: local Langlands correspondence

local class field theory

How these facts were elicited

Referenced by (5)

Full triples — surface form annotated when it differs from this entity's canonical label.

André Weil notableConcept Weil group
Weil group extensionOf Weil group self-linksurface differs
this entity surface form: absolute Galois group
Weil group generalizationOf Weil group self-linksurface differs
this entity surface form: Weil group of a local field
Weil group generalizationOf Weil group self-linksurface differs
this entity surface form: Weil group of a global field
Cohomologie Galoisienne topic Weil group