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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 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

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

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

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

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 study the exceptional theta correspondence for real groups obtained by restricting the minimal representation of the split exceptional group of the type E_n, to a split dual pair where one member is the exceptional group of the type G_2.…

Representation Theory · Mathematics 2017-05-23 Hung Yean Loke , Gordan Savin

In this paper, we propose two maximal one-to-one sub-relations $\underline\theta, \overline\theta$ of the Howe correspondence $\Theta$ for a finite reductive dual pair consisting of a symplectic group and an orthogonal group. Moreover, we…

Representation Theory · Mathematics 2020-06-12 Shu-Yen Pan

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

In this article, we consider a dual pair $(G, G')$ in the symplectic group $Sp(W)$ with $G$ compact and let $(\tilde{G}, \tilde{G}')$ be the preimages of $G$ and $G'$ in the metaplectic group $\widetilde{Sp(W)}$. For every irreducible…

Representation Theory · Mathematics 2020-11-10 Allan Merino

We study the behavior of Dirac cohomology under Howe's $\Theta$-correspondence in the case of complex reductive dual pairs. More precisely, if $(G_1,G_2)$ is a complex reductive dual pair with $G_1$ and $G_2$ viewed as real groups, we…

Representation Theory · Mathematics 2023-07-27 Spyridon Afentoulidis-Almpanis , Gang Liu , Salah Mehdi

It is known that the $\Theta$-correspondence for a finite reductive dual pair is not one-to-one in general. In this paper, we propose two maximal one-to-one sub-relations $\underline\theta,\overline\theta$ of the $\Theta$-correspondences…

Representation Theory · Mathematics 2020-07-22 Shu-Yen Pan

Using exceptional theta correspondences, we prove that certain Weil representations of $p$-adic groups are multiplicity free and determine irreducible quotients.

Representation Theory · Mathematics 2024-11-05 Marcela Hanzer , Gordan Savin

Let $G$ be a split simply laced group defined over a $p$-adic field $F$. In this paper we study the restriction of the minimal representation of $G$ to various dual pairs in $G$. For example, the restriction of the minimal representation of…

Representation Theory · Mathematics 2016-09-06 Kay Magaard , Gordan Savin

We continue our work on understanding Howe correspondences by using theta representations from p-adic groups to compact groups. We prove some results for unitary theta representations of compact groups with respect to the induction and…

Representation Theory · Mathematics 2021-12-03 Chun-Hui Wang

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 determine the occurrence and explicitly describe the theta lifts on all levels of all the irreducible generic representations for the dual pair of groups $(\mathrm{Sp}_{2n}, \mathrm{O}(V))$ defined over a local nonarchimedean field…

Representation Theory · Mathematics 2021-04-05 Petar Bakic

We use the theory of Condensed Mathematics to build a condensed cohomology theory for the Weil group of a $p$-adic field. The cohomology groups are proved to be locally compact abelian groups of finite ranks in some special cases. This…

Number Theory · Mathematics 2025-03-19 Marco Artusa

We consider the skew Howe duality for the action of certain dual pairs of Lie groups $(G_1, G_2)$ on the exterior algebra $\bigwedge(\mathbb{C}^{n} \otimes \mathbb{C}^{k})$ as a probability measure on Young diagrams by the decomposition…

Representation Theory · Mathematics 2023-09-25 Anton Nazarov , Olga Postnova , Travis Scrimshaw
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