%0 Journal Article %A C. Righi %A R. W. T. Yu %T On the Index of the Quotient of a Borel Subalgebra by an ad-Nilpotent Ideal %J Journal of Lie theory %D 2010 %P 49-63 %V 20 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JLT_2010_20_1_JLT_2010_20_1_a4/ %F JLT_2010_20_1_JLT_2010_20_1_a4