Invariant differential operators are linear combinations of symmetric positive ones.
Invariant operators on higher K-types.
Higher order invariants in the case of compact quotients
We present the theory of higher order invariants and higher order automorphic forms in the simplest case, that of a compact quotient. In this case, many things simplify and we are thus able to prove a more precise structure theorem than in the general case.
Fourier expansion along geodesics on Riemann surfaces
For an eigenfunction of the Laplacian on a hyperbolic Riemann surface, the coefficients of the Fourier expansion are described as intertwining functionals. All intertwiners are classified. A refined growth estimate for the coefficients is given and a summation formula is proved.
Theta correspondence for Eisenstein series.
A new multiple Dirichlet series induced by a higher-order form
-schemes and toric varieties.
Differential operators on equivariant vector bundles over symmetric spaces.
Torus actions on compact quotients.
Invariant triple products.
Erratum to: Cohomology of arithmetic groups with infinite dimensional coefficient spaces.
Cohomology of arithmetic groups with infinite dimensional coefficient spaces.
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