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In this note, we construct new representations of D=2, N=4 supersymmetry which do not involve chiral or twisted chiral multiplets. These multiplets may make it possible to circumvent no-go theorems about N=4 superspace formulations of…

High Energy Physics - Theory · Physics 2009-10-28 I. T. Ivanov , U. Lindstrom , M. Rocek

We study not necessarily associative (NNA) division algebras over the reals. We classify in this paper series those that admit a grading over a finite group $G$, and have a basis $\{v_g|g\in G\}$ as a real vector space, and the product of…

Rings and Algebras · Mathematics 2013-07-25 L. A. Wills-Toro

We develop a Lagrange multiplier theory for nonconvex set-valued optimization problems under Lipschitz-type regularity conditions. Instead of classical continuous linear functionals, we introduce closed convex processes -- set-valued…

Optimization and Control · Mathematics 2026-02-09 Fernando García-Castaño , Miguel Ángel Melguizo-Padial

We introduce a direct numerical treatment of nonlinear higher-index differential-algebraic equations by means of overdetermined polynomial least-squares collocation. The procedure is not much more computationally expensive than standard…

Numerical Analysis · Mathematics 2019-03-22 Michael Hanke , Roswitha März

Let $G$ be a complex connected simple algebraic group with a fixed real form $\sigma$. Let $G(\mathbb{R})=G^\sigma$ be the corresponding group of real points. This paper reports a finiteness theorem for the classification of irreducible…

Representation Theory · Mathematics 2019-01-17 Chao-Ping Dong

In this paper it is stressed that there is no {\em physical} reason for symmetries to be linear and that Lie group theory is therefore too restrictive. We illustrate this with some simple examples. Then we give a readable review on the…

High Energy Physics - Theory · Physics 2008-11-26 Jan de Boer , Frederique Harmsze , Tjark Tjin

Based on an idea in [Gan--Savin, Represent. Theory (2005)], we give a classification of minimal representations of connected simple real Lie groups not of type $A$. Actually, we prove that there exist no new minimal representations up to…

Representation Theory · Mathematics 2018-08-21 Hiroyoshi Tamori

We define and study certain linear orders on chainable continua. Those orders depend on a sequence of chains obtained from definition of chainability and on a fixed non-principal ultrafilter on the set of natural numbers. An alternative…

General Topology · Mathematics 2026-02-10 Witold Marciszewski , Julia Ścisłowska , Benjamin Vejnar

We say that a C*-algebra is nowhere scattered if none of its quotients contains a minimal open projection. We characterize this property in various ways, by topological properties of the spectrum, by divisibility properties in the Cuntz…

Operator Algebras · Mathematics 2022-10-21 Hannes Thiel , Eduard Vilalta

We introduce a new notion called generalized dominated splitting which is weaker than classical dominated splitting. We use this notion to generalize a result of Zhang\cite{Zh}: every diffeomorphism with nontrivial global generalized…

Dynamical Systems · Mathematics 2011-06-21 Xueting Tian

In this paper we study a family of scattered $\F_q$--linear sets of rank $tn$ of the projective space $PG(2n-1,q^t)$ ($n \geq 1$, $t\geq 3$), called of {\it pseudoregulus type}, generalizing results contained in [G. Marino, O. Polverino, R.…

Combinatorics · Mathematics 2013-06-27 G. Lunardon , G. Marino , O. Polverino , R. Trombetti

We generalize and refine the strure and disjointness theorems for non-deep contours obtained in the fundamental article 'Multiplicative bases and representation-finite algebras'. In particular we show that these contours do not occur in…

Representation Theory · Mathematics 2012-02-08 Klaus Bongartz

In the recent paper [A14], a geometric realization to minimal representations of simple real Lie groups of non Hermitian type is given, based on the geometric setting introduced in [A11]. We give in this paper a geometric realization to…

Representation Theory · Mathematics 2017-06-14 Dehbia Achab

In this article, we consider the estimation of the marginal distributions for pairs of data are recorded, with unobserved order in each pair. New estimators are proposed and their asymptotic properties are established, by proving a…

Statistics Theory · Mathematics 2021-04-26 L. Dumitrescu , D. Harcourt

We study the nonlinear Klein-Gordon equation on a product space $M=\R\times X$ with metric $\tilde{g}=dt^2-g$ where $g$ is the scattering metic on $X$. We establish the global-in-time Strichartz estimate for Klein-Gordon equation without…

Analysis of PDEs · Mathematics 2019-06-12 Junyong Zhang , Jiqiang Zheng

The normal covering number $\gamma(G)$ of a finite, non-cyclic group $G$ is the minimum number of proper subgroups such that each element of $G$ lies in some conjugate of one of these subgroups. We find lower bounds linear in $n$ for…

Group Theory · Mathematics 2020-12-09 Daniela Bubboloni , Cheryl E. Praeger , Pablo Spiga

We consider three dimensional piecewise linear cones in $\mathbb{R}^4$ that are mass minimizing w.r.t. Lipschitz maps in the sense of \cite{almgren1976existence} as in \cite{Taylor76}. There are three that arise naturally by taking products…

Differential Geometry · Mathematics 2023-04-21 Ásgeir Valfells

In this work, higher-derivative corrections of the non-linear sigma model of both even and odd intrinsic-parity sectors are systematically studied, focusing on ordered amplitudes of flavor scalars in massless limit. It should correspond to…

High Energy Physics - Theory · Physics 2022-01-05 Karol Kampf

An interesting class of orthogonal representations consists of the so-called turn-regular ones, i.e., those that do not contain any pair of reflex corners that "point to each other" inside a face. For such a representation H it is possible…

In this paper, we consider a class of nonlinear regression problems without the assumption of being independent and identically distributed. We propose a correspondent mini-max problem for nonlinear regression and give a numerical…

Methodology · Statistics 2019-04-16 Qing Xu , Xiaohua Xuan