Frobenius element

E790516

The Frobenius element is a distinguished element in a Galois group associated to an unramified prime, encoding how that prime splits in a field extension and playing a central role in algebraic number theory and arithmetic geometry.

All labels observed (8)

How this entity was disambiguated

Statements (47)

Predicate Object
instanceOf arithmetic object
group-theoretic element
actsOn algebraic integers modulo a prime
residue field
appearsIn Cebotarev-type equidistribution results
Dirichlet density statements for primes
proofs of prime splitting criteria
associatedWith Galois group
finite Galois extension of number fields
prime ideal
unramified prime
characterizedBy x ↦ x^N on residue field, where N is residue field size
context finite extension of global fields
unramified places of function fields
unramified places of number fields
definedFor unramified prime ideals
encodes decomposition of primes
inertness of primes
residue field automorphism
splitting behavior of primes in extensions
field algebraic number theory
arithmetic geometry
generalization Frobenius automorphism
hasProperty conjugacy class depends only on the prime
order divides size of residue field minus one in abelian case
well-defined up to conjugacy in the Galois group
liesIn decomposition group
namedAfter Ferdinand Georg Frobenius
notDefinedFor ramified primes without modification
projectsTo generator of Galois group of residue field extension
relatedTo Frobenius endomorphism
Weil group element
arithmetic Frobenius
linked to: Frobenius element

geometric Frobenius
linked to: Frobenius element
usedIn Artin L-functions
Chebotarev density theorem
Galois representations
Langlands program
Sato–Tate type distributions
Weil conjectures
class field theory
global class field theory reciprocity map
local L-factors
étale cohomology
usedToDefine Artin symbol
linked to: Frobenius element

Frobenius conjugacy class
local factors of zeta functions of varieties over finite fields

How these facts were elicited

Referenced by (15)

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

Chebotarev density theorem usesConcept Frobenius element
Koblitz curves relatedTo Frobenius endomorphism
linked to: Frobenius element
Weil group hasElementType Frobenius elements
linked to: Frobenius element
global class field theory usesConcept Frobenius automorphism
linked to: Frobenius element
Artin reciprocity law usesConcept Frobenius automorphism
linked to: Frobenius element
Artin reciprocity law involves Artin symbol
linked to: Frobenius element
Frobenius element relatedTo geometric Frobenius
linked to: Frobenius element
Frobenius element relatedTo arithmetic Frobenius
linked to: Frobenius element
Frobenius element usedToDefine Artin symbol
linked to: Frobenius element
Frobenius conjugacy class associatedTo Frobenius element
Frobenius conjugacy class arisesFrom Frobenius automorphism at a prime
linked to: Frobenius element
Frobenius conjugacy class relatedTo Artin symbol
linked to: Frobenius element
Frobenius endomorphism generalizedBy geometric Frobenius
linked to: Frobenius element
Frobenius endomorphism generalizedBy arithmetic Frobenius
linked to: Frobenius element
Weil–Deligne group relatedTo Frobenius element