DifferentialGeometry/LieAlgebras/Query/NilRepresentation - Maple Help
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Query[NilRepresentation] - check if a representation of a Lie algebra is nilpotent

Calling Sequences

     Query(rho, NilRepresentation)

Parameters

     rho       - a representation of a Lie algebra

   

 

Description

Examples

Description

• 

 Let g be a Lie algebra, V a vector space and ρ:𝔤  glV a representation.  This query returns true if for each x  𝔤 , the matrix ρx is nilpotent, that is, ρxr =0 for some positive integer r.

Examples

withDifferentialGeometry:withLieAlgebras:withLibrary:

 

Example 1.

Retrieve the structure equations for a Lie algebra from the DifferentialGeometry library.

LRetrieveWinternitz,1,4,1,alg1

L:=e2,e4=e1,e3,e4=e2

(2.1)

 

Initialize the Lie algebra and create a 4-dimensional representation space.

DGsetupL:

alg1 > 

DGsetupx1,x2,x3,x4,V

frame name: V

(2.2)

 

Define the adjoint representation.

V > 

ρRepresentationalg1,V,Adjointalg1

alg1 > 

Queryρ,NilRepresentation

true

(2.3)

 

See Also

DifferentialGeometry

LieAlgebras

Query

Representation