Hilbert Series of Typical Representations for Lie Superalgebras

Let g be a basic classical Lie superalgebra over C. In the case of a typical
weight whose every nonnegative integer multiple is also typical, we compute a closed form for
the Hilbert series whose coefficients encode the dimensions of finite-dimensional irreducible typical
g-representations. We give a formula for this Hilbert series in terms of elementary symmetric
polynomials and Eulerian polynomials. Additionally, we show a simple closed form in terms of
differential operators.