Weyl group
E117654
A Weyl group is a finite reflection group associated with a root system that encodes the symmetries of Lie algebras and Lie groups in representation theory and geometry.
All labels observed (13)
How this entity was disambiguated
This entity first appeared as the object of triple T990131 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
Target entity: Weyl group Context triple: [Hermann Weyl, knownFor, Weyl group]
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A.
Poincaré group
The Poincaré group is the fundamental symmetry group of special relativity, combining spacetime translations with Lorentz transformations in four-dimensional Minkowski space.
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B.
Conway groups
Conway groups are a set of three closely related sporadic simple groups discovered by John H. Conway in the study of symmetries of the Leech lattice in group theory.
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C.
Lorentz group
The Lorentz group is the mathematical group of spacetime symmetries in special relativity, consisting of all rotations and boosts that preserve the Minkowski spacetime interval.
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D.
Noether's problem
Noether's problem is a fundamental question in invariant theory and field theory that asks whether the fixed field of a finite group acting on a rational function field is itself a purely transcendental (rational) extension.
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E.
Wigner–Eckart theorem
The Wigner–Eckart theorem is a fundamental result in quantum mechanics that factorizes matrix elements of tensor operators into a reduced matrix element and a purely geometric part given by Clebsch–Gordan coefficients, greatly simplifying angular momentum calculations.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Weyl group Target entity description: A Weyl group is a finite reflection group associated with a root system that encodes the symmetries of Lie algebras and Lie groups in representation theory and geometry.
-
A.
Poincaré group
The Poincaré group is the fundamental symmetry group of special relativity, combining spacetime translations with Lorentz transformations in four-dimensional Minkowski space.
-
B.
Conway groups
Conway groups are a set of three closely related sporadic simple groups discovered by John H. Conway in the study of symmetries of the Leech lattice in group theory.
-
C.
Lorentz group
The Lorentz group is the mathematical group of spacetime symmetries in special relativity, consisting of all rotations and boosts that preserve the Minkowski spacetime interval.
-
D.
Noether's problem
Noether's problem is a fundamental question in invariant theory and field theory that asks whether the fixed field of a finite group acting on a rational function field is itself a purely transcendental (rational) extension.
-
E.
Wigner–Eckart theorem
The Wigner–Eckart theorem is a fundamental result in quantum mechanics that factorizes matrix elements of tensor operators into a reduced matrix element and a purely geometric part given by Clebsch–Gordan coefficients, greatly simplifying angular momentum calculations.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
finite reflection group
ⓘ
mathematical concept ⓘ |
| actsOn |
Cartan subalgebra
ⓘ
Cartan subalgebra dual ⓘ root system ⓘ weight lattice ⓘ |
| appearsIn |
theory of Kac–Moody algebras
ⓘ
theory of algebraic groups ⓘ |
| associatedWith |
Coxeter group
ⓘ
root system ⓘ semisimple Lie algebra ⓘ semisimple Lie group ⓘ |
| correspondsTo | isomorphism class of root system ⓘ |
| definedAs | group generated by reflections in hyperplanes orthogonal to roots ⓘ |
| encodes |
structure of semisimple Lie algebra
ⓘ
structure of semisimple Lie group ⓘ symmetries of Dynkin diagram ⓘ symmetries of root system ⓘ |
| field |
Lie theory
ⓘ
algebraic geometry ⓘ combinatorics ⓘ differential geometry ⓘ representation theory ⓘ |
| hasExample |
Weyl group
self-linksurface differs
ⓘ
surface form:
Weyl group of type A_n
Weyl group self-linksurface differs ⓘ
surface form:
Weyl group of type B_n
Weyl group self-linksurface differs ⓘ
surface form:
Weyl group of type C_n
Weyl group self-linksurface differs ⓘ
surface form:
Weyl group of type D_n
Weyl group self-linksurface differs ⓘ
surface form:
Weyl group of type E_6
Weyl group of type E_7 ⓘ Weyl group self-linksurface differs ⓘ
surface form:
Weyl group of type E_8
Weyl group self-linksurface differs ⓘ
surface form:
Weyl group of type F_4
Weyl group self-linksurface differs ⓘ
surface form:
Weyl group of type G_2
|
| hasOrder | finite integer depending on root system ⓘ |
| hasProperty |
acts on Euclidean space
ⓘ
crystallographic ⓘ finite ⓘ generated by reflections ⓘ |
| namedAfter | Hermann Weyl ⓘ |
| relatedTo |
Cartan matrix
ⓘ
Coxeter–Dynkin diagrams ⓘ
surface form:
Dynkin diagram
|
| subclassOf |
Coxeter group
ⓘ
crystallographic reflection group ⓘ reflection group ⓘ |
| usedIn |
Weyl character formula
ⓘ
surface form:
Borel–Weil–Bott theorem
Kazhdan–Lusztig theory ⓘ Weyl character formula ⓘ classification of semisimple Lie algebras ⓘ classification of simple Lie groups ⓘ representation theory of Lie algebras ⓘ representation theory of Lie groups ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Subject: Weyl group Description of subject: A Weyl group is a finite reflection group associated with a root system that encodes the symmetries of Lie algebras and Lie groups in representation theory and geometry.
Referenced by (20)
Full triples — surface form annotated when it differs from this entity's canonical label.