Abstract
The notion of derivatives for smooth representations of GL(n, ℚ p ) was defined in [BZ77]. In the archimedean case, an analog of the highest derivative was defined for irreducible unitary representations in [Sah89] and called the “adduced” representation. In [AGS] derivatives of all orders were defined for smooth admissible Fréchet representations (of moderate growth).
A key ingredient of this definition is the functor of twisted coinvariants with respect to the nilradical of the mirabolic subgroup. In this paper we prove exactness of this functor and compute it on a certain class of representations. This implies exactness of the highest derivative functor, and allows to compute highest derivatives of all monomial representations.
In [AGS] these results are applied to finish the computation of adduced representations for all irreducible unitary representations and to prove uniqueness of degenerate Whittaker models for unitary representations.
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References
A. Aizenbud and D. Gourevitch, Schwartz functions on Nash manifolds, International Mathematics Research Notices No. 5 (2008), Article ID rnm155, 37 pages. DOI: 10.1093/imrn/rnm155. arXiv:0704.2891 [math.AG].
A. Aizenbud and D. Gourevitch, De-Rham theorem and Shapiro lemma for Schwartz functions on Nash manifolds, Israel Journal of Mathematics 177 (2010), 155–188. arXiv:0802.3305v2 [math.AG].
A. Aizenbud and D. Gourevitch, Generalized Harish-Chandra descent, Gel’fand pairs and an archimedean analog of Jacquet-Rallis’ Theorem, Duke Mathematical Journal 149 (2009), 509–567. arXiv: 0812.5063[math.RT].
A. Aizenbud and D. Gourevitch, Smooth transfer of Kloostermann integrals, American Journal of Mathematics 135 (2013), 143–182. arXiv:1001.2490[math.RT].
A. Aizenbud, D. Gourevitch and S. Sahi, Derivatives for smooth representations of GL(n, ℝ) and GL(n, ℂ), Israel Journal of Mathematics 206 (2015), 1–38.
A. Aizenbud, O. Offen and E. Sayag, Disjoint pairs for GL n(ℝ) and GL n(ℂ), Comptes Rendus Mathématique. Académie des Sciences. Paris 350 (2012), 9–11.
J. Bochnak, M. Coste, M.-F. Roy, Real Algebraic Geometry, Ergebnisse der Mathematik und ihrer Grenzgebiete, Vol. 36, Springer, Berlin, 1998.
I. N. Bernstein and A. V. Zelevinsky, Induced representations of reductive p-adic groups. I. Annales Scientifiques de l’École Normale Supérieure 10 (1977), 441–472.
W. Casselman, Canonical extensions of Harish-Chandra modules to representations of G, Canadian Journal of Mathematics 41 (1989), 385–438.
W. Casselman, H. Hecht and D. Miličić, Bruhat filtrations and Whittaker vectors for real groups, in The Mathematical Legacy of Harish-Chandra (Baltimore, MD, 1998), Proceedings of Symposia in Pure Mathematics, Vol. 68, American Mathematical Society, Providence, RI, 2000, pp. 151–190.
W. Casselman and D. Miličić, Asymptotic behavior of matrix coefficients of admissible representations, Duke Mathematical Journal 49 (1982), 869–930.
S. Gel’fand and Y. Manin, Metody gomologicheskoi algebry. Tom 1. [Methods in homological algebra. Vol. 1], Vvedenie v teoriyu kogomologii i proizvodnye kategorii. [Introduction to the theory of cohomology, and derived categories], with an English summary, Nauka, Moscow, 1988.
B. Kostant, On Whittaker vectors and representation theory, Inventiones Mathematicae 48 (1978), 101–184.
S. Sahi, On Kirillov’s conjecture for Archimedean fields, Compositio Mathematica 72 (1989), 67–86.
M. Shiota, Nash Manifolds, Lecture Notes in Mathematics, Vol. 1269, Springer, Berlin, 1987.
N. Wallach, Real Reductive Groups. I, Pure and Applied Mathematics, Vol. 132, Academic Press, Boston, MA, 1988.
N. Wallach, Real Reductive Groups. II, Pure and Applied Mathematics, Vol. 132-II, Academic Press, Boston, MA, 1992.
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Aizenbud, A., Gourevitch, D. & Sahi, S. Twisted homology for the mirabolic nilradical. Isr. J. Math. 206, 39–88 (2015). https://doi.org/10.1007/s11856-014-1150-3
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DOI: https://doi.org/10.1007/s11856-014-1150-3