%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 %U https://jolt.centre-mersenne.org/articles/10.5802/jolt.586/ %R 10.5802/jolt.586 %F JOLT_2010_20_1_a4