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We give a proof of the Howe duality conjecture for the (almost) equal rank dual pairs in full generality. For arbitrary dual pairs, we prove the irreducibility of the (small) theta lifts for all tempered representations. Our proof works for…

Number Theory · Mathematics 2015-06-17 Wee Teck Gan , Shuichiro Takeda

It is known that irreducible cuspidal characters satisfy the preservation principle in the Howe correspondences of finite reductive dual pairs. In this article, we generalize the preservation principle to any irreducible characters of…

Representation Theory · Mathematics 2022-07-15 Shu-Yen Pan

We prove Howe duality for an exceptional theta correspondence. To that end we exploit a pair of see-saw identities and relate the $K$-types of corresponding representations.

Representation Theory · Mathematics 2026-04-29 Gordan Savin

In this paper, we completely describe the Howe correspondence for the dual pairs from the title over a nonarchimedean local field of characteristic zero. More specifically, for every irreducible admissible representation of these groups, we…

Representation Theory · Mathematics 2019-08-27 Petar Bakic , Marcela Hanzer

A sub-relation of the $\Theta$-correspondence called the \emph{$\eta$-correspondence} is defined by Gurevich-Howe for a finite reductive dual pair in stable range. In this paper we propose an extension of the correspondence to general…

Representation Theory · Mathematics 2021-11-29 Shu-Yen Pan

In this article, we give a new method for proving Howe correspondence in the case of dual pairs of type $({\rm GL}_n, {\rm GL}_m)$ over a non-Archimedean locally compact field $F$. The proof consists in combining a study on Kudla's…

Representation Theory · Mathematics 2007-09-28 Alberto Minguez

We complete the proof of the Howe duality conjecture in the theory of local theta correspondence by treating the remaining case of quaternionic dual pairs in arbitrary residual characteristic.

Representation Theory · Mathematics 2015-07-17 Wee Teck Gan , Binyong Sun

We give a proof of the Howe duality conjecture in local theta correspondence for symplectic-orthogonal or unitary dual pairs in arbitrary residual characteristic.

Number Theory · Mathematics 2015-06-17 Wee Teck Gan , Shuichiro Takeda

We prove Howe duality for the theta correspondence arising from the $p$-adic dual pair $G_2 \times (\text{PU}_3 \rtimes \mathbb{Z}/2\mathbb{Z})$ inside the adjoint quasi-split group of type $E_6$.

Representation Theory · Mathematics 2022-08-31 Petar Bakic , Gordan Savin

We prove Kudla-Rallis conjecture on first occurrences of local theta correspondence, for all type I irreducible dual pairs and all local fields of characteristic zero.

Representation Theory · Mathematics 2014-06-03 Binyong Sun , Chen-Bo Zhu

In this paper, we prove that theta correspondence preserves unitarity under certain restrictions.

Representation Theory · Mathematics 2007-05-23 Hongyu He

We study three exceptional theta correspondences for p-adic groups, where one member of the dual pair is the exceptional group G2. We prove the Howe duality conjecture for these dual pairs and a dichotomy theorem, and determine explicitly…

Representation Theory · Mathematics 2021-02-02 Wee Teck Gan , Gordan Savin

In his article "Transcending Classical Invariant Theory" (J.A.M.S., 1989, Vol 2), Roger Howe established a correspondence between representations of a dual pair of reductive groups. This correspondence is known as Howe's correspondence or…

Representation Theory · Mathematics 2007-05-23 Hongyu He

In this second paper of a series dedicated to type I Howe duality for finite fields, we explicitly describe the eta and zeta correspondences constructed in the first paper in terms of G. Lusztig's parametrization of the irreducible…

Representation Theory · Mathematics 2026-04-14 Sophie Kriz

For all the irreducible dual pairs of type I $(G,G')$, we analyze the restriction of the oscillator representation as a $(\mathfrak{g}', K')$-module, when $G'$ is the smaller group. For all $(G,G')$ in the stable range, as well as one more…

Representation Theory · Mathematics 2020-12-16 Sabine J. Lang

For an irreducible dual pair $(G, G') \in Sp(W)$ with one member compact and two representations $\Pi \leftrightarrow \Pi'$ appearing in the Howe duality, we give an expression of the character $\Theta_{\Pi'}$ of $\Pi'$ via the character of…

Representation Theory · Mathematics 2020-11-10 Allan Merino

We study the Hecke algebra modules arising from theta correspondence between certain Harish-Chandra series for type I dual pairs over finite fields. For the product of the pair of Hecke algebras under consideration, we show that there is a…

Representation Theory · Mathematics 2022-09-27 Jia-Jun Ma , Congling Qiu , Jialiang Zou

Let $G$ be a finite group and let $k$ be a field of characteristic $p$. It is known that a $kG$-module $V$ carries a non-degenerate $G$-invariant bilinear form $b$ if and only if $V$ is self-dual. We show that whenever a Morita bimodule $M$…

Representation Theory · Mathematics 2008-12-18 Wolfgang Willems , Alexander Zimmermann

Let $(G,G')$ be a reductive dual pair of a symplectic group and an orthogonal group over a finite field of odd characteristic. The Howe correspondence establishes a correspondence between a subset of irreducible characters of $G$ and a…

Representation Theory · Mathematics 2022-07-08 Shu-Yen Pan

We construct and develop a similitude version of exceptional theta correspondences and show that the Howe duality theorem follows from that for the "isometry" case. We also extend basic tools such as the seesaw identity associated to seesaw…

Representation Theory · Mathematics 2023-08-28 Petar Bakic , Wee Teck Gan , Gordan Savin
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