is defined via the adjoint map (1,2)-tensor ad.
A4,5 [open]
The Lie-algebra is defined via the adjoint map (1,2)-tensor ad.
![A05 = ad = Table2ad[2 Τ[({{0, 0, 0, e_1}, {0, 0, 0, a_1 e_2}, {0, 0, 0, a_2 e_3 }, {0, 0, 0, 0}})]] ; [adJacobi[ad]] ;](../HTMLFiles/index_184.gif)
where 
≠0, and -1≤
≤
≤1.
The automorphism group of the Lie-algebra is generated by the following matrices:
![M = Algebra[4, Τdα[ad, 1, #1] &, ] ;](../HTMLFiles/index_189.gif){kind=small}
![ShowMat[EXP[λ #1] &/@M]](../HTMLFiles/index_190.gif){kind=small}
| Created by Mathematica (September 15, 2007) |  |