5 research outputs found
A note on exponents vs root heights for complex simple Lie algebras
We give an elementary combinatorial proof of a special case of a result due
to Bazlov and Ion concerning the Fourier coefficients of the Cherednik kernel.
This can be used to give yet another proof of the classical fact that for a
complex simple Lie algebra, the partition formed by its exponents is dual to
that formed by the numbers of positive roots at each height.Comment: 5 page
On Lusztig's -analogues of all weight multiplicities of a representation
Let be a complex semisimple Lie algebra. We obtain new
properties of the -analogue of weight multiplicities in finite-dimensional
representations of . In particular, it is proved that certain
weighted sum of -analogues of all weights of a representation equals the
-analogue of the zero weight multiplicity in the reducible representation
. This also provides another formula for the -valued symmetric bilinear form on the character ring of
that was introduced by R.Gupta (Brylinski) in 1987.Comment: 15 page
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A note on exponents vs root heights for complex simple Lie algebras
We give an elementary combinatorial proof of a special case of a result due to
Bazlov and Ion concerning the Fourier coefficients of the Cherednik kernel. This can be
used to give yet another proof of the classical fact that for a complex simple Lie algebra,
the partition formed by its exponents is dual to that formed by the numbers of positive
roots at each height