The next column gives the number of the Cartan class determ…
The next column gives the number of the Cartan class determined by the above-mentioned involution $x$ of $H$ (the numbering matches the one produced by the 'cartan' command).
The next column gives the number of the Cartan class determined by the above-mentioned involution $x$ of $H$ (the numbering matches the one produced by the 'cartan' command).