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most citedNumber of "udu" of a Dyck path and ad-nilpotent ideals of parabolic subalgebras of sl_{l+1}(C)

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math.RT2009★ 2 cited

On the index of the quotient of a Borel subalgebra by an ad-nilpotent ideal

Celine Righi, Rupert W. T. Yu

In this paper, we give upper bounds for the index of the quotient of the Borel subalgebra of a simple Lie algebra or its nilpotent radical by an ad-nilpotent ideal. For the nilpote…