arXiv 0905.08522009-05-31math.QAmath.AG

Invariant prime ideals in quantizations of nilpotent Lie algebras

Milen Yakimov

备注：: 25 pages, AMS-Latex; v.2 minor changes, corrected typos;
DOI：: 10.1112/plms/pdq006

英文摘要：

De Concini, Kac and Procesi defined a family of subalgebras U^w_+ of a quantized universal enveloping algebra U_q(g), associated to the elements of the corresponding Weyl group W. They are deformations of the universal enveloping algebras U(n_+ \cap Ad_w(n_-)) where n_\pm are the nilradicals of a pair of dual Borel subalgebras. Based on results of Gorelik and Joseph and an interpretation of U^w_+ as quantized algebras of functions on Schubert cells, we construct explicitly the H invariant prime ideals of each U^w_+ and show that the corresponding poset is isomorphic to W^{\leq w}, where H is the group of group-like elements of U_q(g). Moreover, for each H-prime of U^w_+ we construct a generating set in terms of Demazure modules related to fundamental representations.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

阅读原文

阅读 PDF ↗

arXiv 页面 ↗HTML 原文 ↗

本文内容

英文摘要相关论文

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

继续探索

相关论文

Quantizations of regular functions on nilpotent orbits

We study the quantizations of the algebras of regular functions on nilpotent orbits. We show that such a quantization always exists and is unique if the orbit is birationally rigid. Further we show that, for special birationally rigid orbits, the quantization has integral central character in all cases but four (one orbit in E_7 and three orbits in E_8). We use this to complete the computation of Goldie ranks for primitive ideals with integral central character for all special nilpotent orbits but one (in E_8). Our main ingredient is results on the geometry of normalizations of the closures of…

2015-05-29math.AGmath.QAmath.RT

Prime ideals in nilpotent Iwasawa algebras

Let G be a nilpotent complete p-valued group of finite rank and let k be a field of characteristic p. We prove that every faithful prime ideal of the Iwasawa algebra kG is controlled by the centre of G, and use this to show that the prime spectrum of kG is a disjoint union of commutative strata. We also show that every prime ideal of kG is completely prime. The key ingredient in the proof is the construction of a non-commutative valuation on certain filtered simple Artinian rings.

2011-08-01math.QAmath.RA

Transfer of ideals and quantization of small nilpotent orbits

We introduce and study a transfer map between ideals of the universal enveloping algebras of two members of a reductive dual pair of Lie algebras. Its definition is motivated by the approach to the real Howe duality through the theory of Capelli identities. We prove that this map provides a lower bound on the annihilators of theta lifts of representations with a fixed annihilator ideal. We also show that in the algebraic stable range, transfer respects the class of quantizations of nilpotent orbit closures. As an application, we explicitly describe quantizations of small nilpotent orbits of ge…

2008-02-14math.QAmath.RT

On Weak Annihilators and Nilpotent Associated Primes of Skew PBW Extensions

We investigate the notions of weak annihilator and nilpotent associated prime defined by Ouyang and Birkenmeier \cite{OuyangBirkenmeier2012} in the setting of noncommutative rings having PBW bases. We extend several results formulated in the literature concerning annihilators and associated primes of commutative rings and skew polynomial rings to a more general setting of algebras not considered before. We exemplify our results with families of algebras appearing in the theory of enveloping algebras, differential operators on noncommutative spaces, noncommutative algebraic geometry, and theore…

2022-03-18math.QAmath.RA

幂零 Slodowy 切片的泛滤过量子化

Universal filtered quantizations of nilpotent Slodowy slices

本文研究幂零 Slodowy 切片的泛滤过量子化，完整刻画了有限 W-代数成为泛滤过量子化的情形，并证明非单 laced 李代数中次正则切片的有限 W-代数是泛等变量子化，进而给出 B 型次正则有限 W-代数作为移位 Yangian 商的表示。

2023-10-27math.AGmath.QAmath.RT

Poisson catenarity in Poisson nilpotent algebras

We prove that for the iterated Poisson polynomial rings known as Poisson nilpotent algebras (or Poisson-CGL extensions), the Poisson prime spectrum is catenary, i.e., all saturated chains of inclusions of Poisson prime ideals between any two given Poisson prime ideals have the same length.

2021-05-28math.ACmath.QAmath.RA

更多相关论文收起更多论文

Catenarity in quantum nilpotent algebras

In this paper, it is established that quantum nilpotent algebras (also known as CGL extensions) are catenary, i.e., all saturated chains of inclusions of prime ideals between any two given prime ideals $P \subsetneq Q$ have the same length. This is achieved by proving that the prime spectra of these algebras have normal separation, and then establishing the mild homological conditions necessary to apply a result of Lenagan and the first author. The work also recovers the Tauvel height formula for quantum nilpotent algebras, a result that was first obtained by Lenagan and the authors through a …

2020-08-04math.QAmath.RAmath.RT

幂零轨道量子化上的Harish-Chandra模研究

On Harish-Chandra modules over quantizations of nilpotent orbits

本文针对复数域上半单代数群的幂零轨道代数过滤量子化上的满支撑不可约Harish-Chandra模，给出几何分类嵌入映射，证明部分情形下为双射并刻画非双射情形的像，还完成例外李代数的部分分类。

2025-09-04math.AGmath.QAmath.RT

Tauvel's height formula for quantum nilpotent algebras

Tauvel's height formula, which provides a link between the height of a prime ideal and the Gelfand-Kirillov dimension of the corresponding factor algebra, is verified for quantum nilpotent algebras.

2018-05-17math.QAmath.RA

Quantization of Double Covers of Nilpotent Coadjoint Orbits I: Noncommutative Models

We construct by geometric methods a noncommutative model E of the algebra of regular functions on the universal (2-fold) cover M of certain nilpotent coadjoint orbits O for a complex simple Lie algebra g. Here O is the dense orbit in the cotangent bundle of the generalized flag variety X associated to a complexified Cartan decomposition g=(p^+)+k+(p^-) where p^+- are Jordan algebras by the TKK construction. We obtain E as the algebra of g-finite differential operators on a smooth Lagrangian subvariety in M where g is given by differential operators twisted according to a critical parameter. Af…

2000-02-15math.QAmath.RTmath.SG

Group-theoretical properties of nilpotent modular categories

We characterize a natural class of modular categories of prime power Frobenius-Perron dimension as representation categories of twisted doubles of finite p-groups. We also show that a nilpotent braided fusion category C admits an analogue of the Sylow decomposition. If the simple objects of C have integral Frobenius-Perron dimensions then C is group-theoretical. As a consequence, we obtain that semisimple quasi-Hopf algebras of prime power dimension are group-theoretical. Our arguments are based on a reconstruction of twisted group doubles from Lagrangian subcategories of modular categories (t…

2007-04-02math.QAmath.RT

Trace Functionals of the Kontsevich Quantization

We generalize the notion of trace to the Kontsevich quantization algebra and show that for all Poisson manifolds representable by quotients of a symplectic manifold by a Hamiltonian action of a nilpotent Lie group, the trace is given by integration with respect to a unimodular volume form.

2000-01-14math.QAmath.SG

Cluster algebra structures on Poisson nilpotent algebras

Various coordinate rings of varieties appearing in the theory of Poisson Lie groups and Poisson homogeneous spaces belong to the large, axiomatically defined class of symmetric Poisson nilpotent algebras, e.g. coordinate rings of Schubert cells for symmetrizable Kac--Moody groups. We prove that every Poisson nilpotent algebra satisfying a mild condition on certain scalars is canonically isomorphic to a cluster algebra which coincides with the corresponding upper cluster algebra, without additional localizations by frozen variables. The constructed cluster structure is compatible with the Poiss…

2018-01-22math.ACmath.QAmath.SG

辛李代数中幂零切片的等变形变理论

Equivariant deformation theory for nilpotent slices in symplectic Lie algebras

针对辛李代数中双块若尔当形幂零轨道的Slodowy切片非通用泊松形变问题，证明其幂零Slodowy簇与D型同构，C型切片为$\u2124_2$-等变通用泊松形变且有非交换对应。

2023-11-09math.AGmath.QAmath.RT

Quantum groups and quantization of Weyl group symmetries of Painlevé systems

We shall construct the quantized q-analogues of the birational Weyl group actions arising from nilpotent Poisson algebras, which are conceptual generalizations, proposed by Noumi and Yamada, of the Bäcklund transformations for Painlevé equations. Consider a quotient Ore domain of the lower nilpotent part of a quantized universal enveloping algebra of arbitrary symmetrizable Kac-Moody type. Then non-integral powers of the image of the Chevalley generators generate the quantized q-analogue of the birational Weyl group action. Using the same method, we shall reconstruct the quantized Bäcklund tra…

2011-12-04math.QAmath.RT

$\U_q(sl(n))$-invariant quantization of symmetric coadjoint orbits via reflection equation algebra

We study relations between the two-parameter $\U_q(sl(n))$-invariant deformation quantization on $sl^*(n)$ and the reflection equation algebra. The latter is described by a quantum permutation on $\End(\C^n)$ given explicitly. The reflection equation algebra is used for constructing the one-parameter quantization on coadjoint orbits, including symmetric and certain bisymmetric and nilpotent ones. Our approach is based on embedding the quantized function algebras on the orbits into the algebra of functions on the quantum group $SL_q(n)$ via reflection equation algebra characters.

2002-12-24math.QA

Quantum cluster algebra structures on quantum nilpotent algebras

All algebras in a very large, axiomatically defined class of quantum nilpotent algebras are proved to possess quantum cluster algebra structures under mild conditions. Furthermore, it is shown that these quantum cluster algebras always equal the corresponding upper quantum cluster algebras. Previous approaches to these problems for the construction of (quantum) cluster algebra structures on (quantized) coordinate rings arising in Lie theory were done on a case by case basis relying on the combinatorics of each concrete family. The results of the paper have a broad range of applications to thes…

2015-05-13math.COmath.QAmath.RA

Classification of braces of cardinality $p^4$

We classify nilpotent pre-Lie rings of cardinality $p^4$ and thereby braces of the same cardinality, for a sufficiently large prime $p$. It has been shown that nilpotent pre-Lie rings of cardinality $p^n$ correspond to strongly nilpotent braces of the same cardinality, for sufficiently large $p$. These braces are explicitly obtained from the corresponding pre-Lie rings by the construction of the group of flows. Not right nilpotent braces of cardinality $p^4$ have been classified, hence our results finish the classification of braces of cardinality $p^4$.

2022-11-08math.GRmath.QAmath.RA

单位根情形下量子幂零代数的删除导子算法

A Deleting Derivations Algorithm for Quantum Nilpotent Algebras at Roots of Unity

本文将Cauchon的删除导子算法和典范嵌入扩展至允许单位根的量子代数，通过变量替换构造量子仿射空间，并给出完全素商代数的PI度数显式公式及最大维不可约表示的构造方法。

2023-04-04math.QAmath.RT