Cartan #0:
split: 0; compact: 1; complex: 1
canonical twisted involution: e
twisted involution orbit size: 3; fiber size: 2; strong inv: 6
imaginary root system: A1.A1
real root system is empty
complex factor: A1
real form #1: [0] (1)
real form #0: [1] (1)


Cartan #1:
split: 1; compact: 0; complex: 1
canonical twisted involution: 1,2,3,2,1
twisted involution orbit size: 6; fiber size: 1; strong inv: 6
imaginary root system: A1
real root system: A1
complex factor is empty
real form #1: [0] (1)


Cartan #2:
split: 3; compact: 0; complex: 0
canonical twisted involution: 1,2,1,3,2,1
twisted involution orbit size: 1; fiber size: 1; strong inv: 1
imaginary root system is empty
real root system: A3
complex factor is empty
real form #1: [0] (1)