rotation group SU(2)
E443145
The rotation group SU(2) is the Lie group of 2×2 unitary matrices with determinant 1 that serves as the double cover of the three-dimensional rotation group SO(3) and underlies the quantum theory of angular momentum and spin.
All labels observed (5)
| Label | Occurrences |
|---|---|
| SU(2) | 7 |
| SU(2) Lie group | 1 |
| Spin^+(3,1) | 1 |
| rotation group SU(2) canonical | 1 |
| special unitary group SU(2) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4461356 — 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: rotation group SU(2) Context triple: [Wigner–Eckart theorem, involves, rotation group SU(2)]
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A.
rotation group SO(3)
The rotation group SO(3) is the group of all rotations in three-dimensional space, represented by 3×3 orthogonal matrices with determinant 1, and plays a central role in classical mechanics, quantum mechanics, and geometry.
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B.
SU(3)
SU(3) is the special unitary group of degree three, a Lie group fundamental to the mathematical description of the strong interaction and the classification of hadrons in particle physics.
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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.
SL(2,C)
SL(2,C) is the complex special linear group of 2×2 matrices with determinant 1, which serves as the double cover and spinor representation group of the proper orthochronous Lorentz group in four-dimensional spacetime.
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E.
Poincaré group
The Poincaré group is the fundamental symmetry group of special relativity, combining spacetime translations with Lorentz transformations in four-dimensional Minkowski space.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: rotation group SU(2) Target entity description: The rotation group SU(2) is the Lie group of 2×2 unitary matrices with determinant 1 that serves as the double cover of the three-dimensional rotation group SO(3) and underlies the quantum theory of angular momentum and spin.
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A.
rotation group SO(3)
The rotation group SO(3) is the group of all rotations in three-dimensional space, represented by 3×3 orthogonal matrices with determinant 1, and plays a central role in classical mechanics, quantum mechanics, and geometry.
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B.
SU(3)
SU(3) is the special unitary group of degree three, a Lie group fundamental to the mathematical description of the strong interaction and the classification of hadrons in particle physics.
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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.
SL(2,C)
SL(2,C) is the complex special linear group of 2×2 matrices with determinant 1, which serves as the double cover and spinor representation group of the proper orthochronous Lorentz group in four-dimensional spacetime.
-
E.
Poincaré group
The Poincaré group is the fundamental symmetry group of special relativity, combining spacetime translations with Lorentz transformations in four-dimensional Minkowski space.
- F. None of above. chosen
Statements (58)
| Predicate | Object |
|---|---|
| instanceOf |
Lie algebra
ⓘ
Lie group ⓘ compact Lie group ⓘ matrix group ⓘ real 3-dimensional manifold ⓘ semisimple Lie group ⓘ simple Lie group ⓘ simply connected Lie group ⓘ special unitary group ⓘ |
| actsOn | spinor states ⓘ |
| appearsIn |
gauge theories
ⓘ
particle physics ⓘ representation theory of Lie groups ⓘ |
| centerIsIsomorphicTo | Z/2Z NERFINISHED ⓘ |
| coveringMapDegree | 2 ⓘ |
| covers | SO(3) NERFINISHED ⓘ |
| fundamentalRepresentationCalled | spin-1/2 representation ⓘ |
| hasCartanSubalgebraDimension | 1 ⓘ |
| hasCenter | {±I} ⓘ |
| hasCoveringMapTo | SO(3) NERFINISHED ⓘ |
| hasDefinition | group of 2×2 unitary matrices with determinant 1 ⓘ |
| hasDeterminantCondition | determinant 1 ⓘ |
| hasDimension | 3 ⓘ |
| hasDynkinType | A1 ⓘ |
| hasFundamentalGroup |
Z/2Z
ⓘ
trivial group ⓘ |
| hasFundamentalRepresentationDimension | 2 ⓘ |
| hasHaarMeasure | finite ⓘ |
| hasIrreducibleRepresentationsLabeledBy | nonnegative half-integers j ⓘ |
| hasLieAlgebra | su(2) ⓘ |
| hasMatrixSize | 2×2 ⓘ |
| hasMaximalTorus | U(1) ⓘ |
| hasRank | 1 ⓘ |
| hasRealForm | compact real form of A1 ⓘ |
| hasRepresentationDimensionFormula | 2j+1 ⓘ |
| hasRootSystem | type A1 ⓘ |
| hasUnitarityCondition | U†U = I ⓘ |
| hasWeylGroup | Z/2Z ⓘ |
| isCompact | true ⓘ |
| isCompactRealFormOf | SL(2,C) NERFINISHED ⓘ |
| isConnected | true ⓘ |
| isDiffeomorphicTo | S^3 ⓘ |
| isDoubleCoverOf | SO(3) NERFINISHED ⓘ |
| isGaugeGroupOf | weak isospin in the Standard Model ⓘ |
| isIsomorphicTo |
Spin(3)
NERFINISHED
ⓘ
so(3) ⓘ unit quaternions ⓘ |
| isLocallyIsomorphicTo | SO(3) NERFINISHED ⓘ |
| isNonAbelian | true ⓘ |
| isSimple | true ⓘ |
| isSimplyConnected | true ⓘ |
| isSpinGroupFor | R^3 ⓘ |
| isSubgroupOf | SL(2,C) NERFINISHED ⓘ |
| isTopologically | 3-sphere S^3 NERFINISHED ⓘ |
| isUniversalCoverOf | SO(3) NERFINISHED ⓘ |
| quotientByCenterIs | SO(3) NERFINISHED ⓘ |
| underliesTheory |
quantum angular momentum
ⓘ
quantum spin ⓘ |
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: rotation group SU(2) Description of subject: The rotation group SU(2) is the Lie group of 2×2 unitary matrices with determinant 1 that serves as the double cover of the three-dimensional rotation group SO(3) and underlies the quantum theory of angular momentum and spin.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.