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Let $F$ be a global field. Let $G$ be a non trivial finite \'etale tame $F$-group scheme. We define height functions on the set of $G$-torsors over $F,$ which generalize the usual heights such as discriminant. As an analogue of the Malle…

Number Theory · Mathematics 2024-02-27 Ratko Darda , Takehiko Yasuda

The distance on a set is a comparative function. The smaller the distance between two elements of that set, the closer, or more similar, those elements are. Fr\'echet axiomatized the distance into what is today known as a metric. In this…

General Topology · Mathematics 2016-07-05 Samer Assaf

The z-measures on partitions originated from the problem of harmonic analysis of linear representations of the infinite symmetric group in the works of Kerov, Olshanski and Vershik (1993, 2004). A similar family corresponding to projective…

Combinatorics · Mathematics 2011-07-05 Leonid Petrov

We investigate extension of a measure to a very general set of undetermined structure. Structure may be imposed on this set in special cases

Functional Analysis · Mathematics 2008-02-14 Peter S Chami , Norris Sookoo

We investigate Bruhat-Tits buildings and their compactifications by means of Berkovich analytic geometry over complete non-Archimedean fields. For every reductive group G over a suitable non-Archimedean field k we define a map from the…

Algebraic Geometry · Mathematics 2009-03-09 Bertrand Rémy , Amaury Thuillier , Annette Werner

In this review, we present a general framework for the construction of Kac-Moody (KM) algebras associated to higher-dimensional manifolds. Starting from the classical case of loop algebras on the circle $\mathbb{S}^{1}$, we extend the…

High Energy Physics - Theory · Physics 2026-01-21 Rutwig Campoamor-Stursberg , Alessio Marrani , Michel Rausch de Traubenberg

We discuss the higher dimensional generalizations of the Virasoro and Affine Kac-Moody Lie algebras. We present an explicit construction for a central extensions of the Lie Algebra $Map (X, \g)$ where $\g$ is a finite-dimensional Lie…

Quantum Algebra · Mathematics 2007-05-23 Maria Golenishcheva-Kutuzova

The purpose of this paper is to explain the proofs of the results announced by Nick Katz in 1977, namely a description of ``Galois measures for Tate modules of height two formal groups over the ring of integers of a finite unramified…

Number Theory · Mathematics 2025-05-21 Laurent Berger

In conformal field theories, when the conformal symmetry is enhanced by a global Lie group symmetry, the original Virasoro algebra can be extended to Kac-Moody algebra. In this paper, we extend the lattice construction of the Kac-Moody…

Strongly Correlated Electrons · Physics 2023-08-02 Wei Tang , Jutho Haegeman

Riemannian symmetric spaces are fundamental objects in finite dimensional differential geometry. An important problem is the construction of symmetric spaces for generalizations of simple Lie groups, especially their closest infinite…

Differential Geometry · Mathematics 2013-05-15 Walter Freyn

In this three-part series of papers, we argue that the conventional spread measures are not well defined for credit-risky bonds and introduce a set of credit term structures which correct for the biases associated with the strippable cash…

Pricing of Securities · Quantitative Finance 2009-12-24 Arthur M. Berd , Roy Mashal , Peili Wang

Reference metrics are used to define the differential structure on multicube representations of manifolds, i.e., they provide a simple and practical way to define what it means globally for tensor fields and their derivatives to be…

Computational Physics · Physics 2016-02-15 Lee Lindblom , Nicholas W. Taylor , Oliver Rinne

In the present article we introduce and study a class of topological reflection spaces that we call Kac-Moody symmetric spaces. These generalize Riemannian symmetric spaces of non-compact type. We observe that in a non-spherical Kac-Moody…

Group Theory · Mathematics 2019-05-03 Walter Freyn , Tobias Hartnick , Max Horn , Ralf Köhl

The classification of Curtis-Tits amalgams with {connected}, triangle free, simply-laced diagram over a field of size at least $4$ was completed in~\cite{BloHof2014b}. Orientable amalgams are those arising from applying the Curtis-Tits…

Group Theory · Mathematics 2015-11-24 Rieuwert J. Blok , Corneliu G. Hoffman

We introduced the concept of a metric value set (MVS) in an earlier paper \cite{GM} and developed the idea further in \cite{AS}. In this paper we study locally $M$-metrizable spaces and the products of $M$-metrizable spaces. Finally we…

General Topology · Mathematics 2017-07-04 Olli Hella

We provide new arguments to see topological Kac-Moody groups as generalized semisimple groups over local fields: they are products of topologically simple groups and their Iwahori subgroups are the normalizers of the pro-p Sylow subgroups.…

Group Theory · Mathematics 2007-05-23 Bertrand Remy , Patrick Bonvin

We describe some buildings related to complex Kac-Moody groups. First we describe the spherical building of SLn(C) (i.e. the projective geometry PG(Cn)) and its Veronese representation. Next we recall the construction of the affine building…

Geometric Topology · Mathematics 2007-05-23 Linus Kramer

We define a generalization of the fixed point set, called the bounded fixed set, for a group acting by isometries on a metric space. An analogue of the P. A. Smith theorem is proved for metric spaces of finite asymptotic dimension, which…

Geometric Topology · Mathematics 2013-02-12 Ian Hambleton , Lucian Savin

The $\imath$Serre relations and the corresponding Serre-Lusztig relations are formulated and established for arbitrary $\imath$quantum groups arising from quantum symmetric pairs of Kac-Moody type.

Quantum Algebra · Mathematics 2022-02-17 Xinhong Chen , Gail Letzter , Ming Lu , Weiqiang Wang

We fix a prime p and construct new cases of pro-p extensions of number fields with restricted ramification and splitting, whose Galois groups decompose as coproducts of pro-p absolute Galois groups of local fields. As a consequence, these…

Number Theory · Mathematics 2025-08-06 Oussama Hamza , Donghyeok Lim , Christian Maire