3 papers
math.AG2017
Connected components of closed affine Deligne-Lusztig varieties
Ling Chen, Sian Nie
For split reductive algebraic groups, we determine the connected components of closed affine Deligne-Lusztig varieties of arbitrary parahoric level.
math.AG2015
Connected components of closed affine Deligne-Lusztig varieties in affine Grassmannians
Sian Nie
We determine the set of connected components of closed affine Deligne-Lusztig varieties for hyperspecial maximal parahoric subgroups of unramified connected reductive groups. This…
math.QA2010
Twisted Hamiltonian Lie Algebras and Their Multiplicity-Free Representations
Ling Chen
We construct a class of new Lie algebras by generalizing the one-variable Lie algebras generated by the quadratic conformal algebras (or corresponding Hamiltonian operators) associ…