English

On the Lefschetz Principle for $\mathrm{GL}(n,\mathbb{C})$ and $\mathrm{GL}(m,\mathbb{Q}_p)$

Representation Theory 2024-10-16 v3

Abstract

We construct an exact functor from the category of Harish-Chandra modules of GLn(C)\mathrm{GL}_n(\mathbb C) to the category of finite-dimensional modules of graded Hecke algebras of type A. We show that the functor preserves parabolically induced modules, standard modules, irreducible modules, unitary modules and Dirac series. We also use the functor to connect a Bernstein-Zelevinsky type functor for graded Hecke algebra side to the tensor product for GLn(C)\mathrm{GL}_n(\mathbb C) side. Some applications are also discussed.

Keywords

Cite

@article{arxiv.2305.15766,
  title  = {On the Lefschetz Principle for $\mathrm{GL}(n,\mathbb{C})$ and $\mathrm{GL}(m,\mathbb{Q}_p)$},
  author = {Kei Yuen Chan and Kayue Daniel Wong},
  journal= {arXiv preprint arXiv:2305.15766},
  year   = {2024}
}

Comments

v2: 38 pages, v3: Section 9.5 added, accepted version to appear in Israel Journal of Mathematics

R2 v1 2026-06-28T10:45:34.376Z