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Reparametrization invariant Lagrangian theories with higher derivatives are considered. We investigate the geometric structures behind these theories and construct the Hamiltonian formalism in a geometric way. The Legendre transformation…

High Energy Physics - Theory · Physics 2014-11-18 Petr Dunin-Barkowski , Alexei Sleptsov

This paper uses the convolution theorem of the Laplace transform to derive new inverse Laplace transforms for the product of two parabolic cylinder functions in which the arguments may have opposite sign. These transforms are subsequently…

Classical Analysis and ODEs · Mathematics 2019-08-02 Dirk Veestraeten

A procedure is described that makes use of the generating function of characters to obtain a new generating function $H$ giving the multiplicities of each weight in all the representations of a simple Lie algebra. The way to extract from…

Mathematical Physics · Physics 2015-09-30 Jose Fernandez Nunez , Wifredo Garcia Fuertes , Askold M. Perelomov

We study a BGG-type category of infinite dimensional representations of H[W], a semi-direct product of the quantum torus with parameter `q' built on the root lattice of a semisimple group G, and the Weyl group of G. Irreducible objects of…

Representation Theory · Mathematics 2007-05-23 Vladimir Baranovsky , Sam Evens , Victor Ginzburg

We classify the quasi-finite irreducible highest weight modules over the infinite rank Lie superalgebras $\hgltwo$, $\hC$ and $\hD$, and determine the necessary and sufficient conditions for quasi-finite irreducible highest weight modules…

Quantum Algebra · Mathematics 2007-05-23 N. Lam , R. B. Zhang

By solving a set of recursion relations for the matrix elements of the ${\cal U}_h(sl(2))$ generators, the finite dimensional highest weight representations of the algebra were obtained as factor representations. Taking a nonlinear…

q-alg · Mathematics 2009-10-30 B. Abdesselam , A. Chakrabarti , R. Chakrabarti

Let $\mathscr T$ be a rooted directed tree with finite branching index $k_{\mathscr T}$ and let $S_{\lambda} \in B(l^2(V))$ be a left-invertible weighted shift on ${\mathscr T}$. We show that $S_{\lambda}$ can be modelled as a…

Functional Analysis · Mathematics 2017-05-17 Sameer Chavan , Shailesh Trivedi

This paper classifies and constructs explicitly all the irreducible representations of affine Hecke algebras of rank two root systems. The methods used to obtain this classification are primarily combinatorial and are, for the most part, an…

Representation Theory · Mathematics 2007-05-23 Arun Ram

For a connected semisimple real Lie group $G$ of non-compact type, Wallach introduced a class of $K$-types called small. We classify all small $K$-types for all simple Lie groups and prove except just one case that each elementary spherical…

Representation Theory · Mathematics 2018-04-10 Hiroshi Oda , Nobukazu Shimeno

Let $G$ be a connected, simply connected, nilpotent Lie group whose irreducible unitary representations are square-integrable modulo the center. We obtain characterization results for reproducing formulas associated with the left…

Functional Analysis · Mathematics 2023-01-10 Sudipta Sarkar , Niraj K. Shukla

In this paper we give some evidence for the Tate (and Hodge) conjecture(s) for a class of Hilbert modular fourfolds X, whose connected components arise as arithmetic quotients of the fourfold product of the upper half plane by congruence…

Number Theory · Mathematics 2007-05-23 Dinakar Ramakrishnan

We describe the image, under the local Langlands correspondence for tori, of the characters of a torus which are trivial on its Iwahori subgroup. Let $k$ be a non-archimedian local field. Let $\boldsymbol{G}$ be a connected reductive group…

Representation Theory · Mathematics 2013-10-29 Manish Mishra

We present a class of Lie algebraic similarity transformations generated by exponentials of two-body on-site hermitian operators whose Hausdorff series can be summed exactly without truncation. The correlators are defined over the entire…

Strongly Correlated Electrons · Physics 2015-06-22 Jacob M. Wahlen-Strothman , Carlos A. Jimenez-Hoyos , Thomas M. Henderson , Gustavo E. Scuseria

In this paper we find fractional Riemann-Liouville derivatives for the Takagi-Landsberg functions. Moreover, we introduce their generalizations called weighted Takagi-Landsberg functions which have arbitrary bounded coefficients in the…

Classical Analysis and ODEs · Mathematics 2020-03-31 Vitalii Makogin , Yuliya Mishura

In [19], Zheng studied the bounded derived categories of constructible $\bar{\mathbb{Q}}_l$-sheaves on some algebraic stacks consisting of the representations of a enlarged quiver and categorified the integrable highest weight modules of…

Representation Theory · Mathematics 2020-05-14 Minghui Zhao

We introduce an odd double affine Hecke algebra (DaHa) generated by a classical Weyl group W and two skew-polynomial subalgebras of anticommuting generators. This algebra is shown to be Morita equivalent to another new DaHa which are…

Representation Theory · Mathematics 2009-01-28 Ta Khongsap , Weiqiang Wang

We introduce a class of equivalences, which we call generalized semi-infinite Hecke equivalences, between certain categories of representations of graded associative algebras which appear in the setting of semi-infinite cohomology for…

Representation Theory · Mathematics 2021-04-09 Alexey Sevostyanov

Let $\mathbf{G}$ be a unipotent group scheme defined in terms of a nilpotent Lie lattice over the ring $\mathcal{O}$ of integers of a number field. We consider bivariate zeta functions of groups of the form $\mathbf{G}(\mathcal{O})$…

Group Theory · Mathematics 2018-07-17 Paula Macedo Lins de Araujo

The Lascoux-Leclerc-Thibon-Ariki theory asserts that the K-group of the representations of the affine Hecke algebras of type A is isomorphic to the algebra of functions on the maximal unipotent subgroup of the group associated with a Lie…

Quantum Algebra · Mathematics 2015-12-22 Masaki Kashiwara , Vanessa Miemietz

The (maximal) Satake compactification associated to a real reductive group $G$ is the closure of the symmetric space of all maximal compact subgroups of $G$ within the compact space of all closed subgroups of $G$. We shall present three…

Representation Theory · Mathematics 2025-12-01 Jacob Bradd , Nigel Higson , Robert Yuncken