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We introduce two types bilateral zeta functions, which are related to the primitive and normalized multiple sine functions respectively. Further, we establish their main properties, that is, Fourier expansions, analytic continuations,…

Classical Analysis and ODEs · Mathematics 2014-09-09 Genki Shibukawa

We compute bilinear integrals involving Macdonald and Gegenbauer functions. These integrals are convergent only for a limited range of parameters. However, when one uses generalized integrals they can be computed essentially without…

Classical Analysis and ODEs · Mathematics 2023-06-16 Jan Dereziński , Christian Gaß , Błażej Ruba

We propose a semiparametric family of copulas based on a set of orthonormal functions and a matrix. This new copula permits to reach values of Spearman's Rho arbitrarily close to one without introducing a singular component. Moreover, it…

Statistics Theory · Mathematics 2013-10-22 Cécile Amblard , Stephane Girard , Ludovic Menneteau

The notion of moment differentiation is extended to the set of generalized multisums of formal power series via an appropriate integral representation and accurate estimates of the moment derivatives. The main result is applied to…

Classical Analysis and ODEs · Mathematics 2023-01-03 Alberto Lastra , Sławomir Michalik , Maria Suwińska

The probabilistic description of finite classical systems often leads to linear kinetic equations. A set of physically motivated mathematical requirements is accordingly formulated. We show that it necessarily implies that solutions of such…

Mathematical Physics · Physics 2008-11-06 Constantinos Tzanakis , Alkis P. Grecos

In this paper we introduce and study a bilinear spherical maximal function of product type in the spirit of bilinear Calder\'{o}n-Zygmund theory. This operator is different from the bilinear spherical maximal function considered by Geba et…

Classical Analysis and ODEs · Mathematics 2020-02-20 L. Roncal , S. Shrivastava , K. Shuin

The main purpose of this work is to prove characterization theorems for generalized moment functions on groups. According one of the main results these are exponential polynomials that can be described with the aid of complete (exponential)…

Classical Analysis and ODEs · Mathematics 2021-09-08 Żywilla Fechner , Eszter Gselmann , László Székelyhidi

We extend the hyperplane arrangement framework for neural network expressivity from the braid to discriminantal arrangements. Compatible piecewise linear functions are characterized by circuit relations and admit a matroidal description via…

Combinatorics · Mathematics 2026-04-06 Pragnya Das

We present a method that connects a well-established nonlinear (bilinear) identification method from time-domain data with neural network (NNs) advantages. The main challenge for fitting bilinear systems is the accurate recovery of the…

Dynamical Systems · Mathematics 2022-08-23 Dimitrios S. Karachalios , Ion Victor Gosea , Kirandeep Kour , Athanasios C. Antoulas

We study a special class of non-convex functions which appear in nonlinear elasticity; and we prove that they have well-defined Legandre transforms. Several examples are given, and an application to a nonlinear eigenvalue problem

Optimization and Control · Mathematics 2007-05-23 Ivar Ekeland

We present a new semiclassical technique which relies on replacing complicated classical manifold structure with simpler manifolds, which are then evaluated by the usual semiclassical rules. Under circumstances where the original manifold…

Chaotic Dynamics · Physics 2009-11-07 Jiri Vanicek , Eric J. Heller

Given a strictly positive measure, we characterize inner semicontinuous solid convex-valued mappings for which continuous functions which are selections almost everywhere are selections. This class contains continuous mappings as well as…

Optimization and Control · Mathematics 2013-08-23 Ari-Pekka Perkkiö

The Langlands functoriality conjecture envisaged in the bisemialgebra framework is proved to correspond to the nonorthogonal completely reducible cuspidal representations of the bilinear algebraic semigroups.

Representation Theory · Mathematics 2007-05-23 Christian Pierre

In this paper we introduce the theory of derivatives of moments and (moment) functionals to represent moment functionals by Gaussian mixtures, characteristic functions of polytopes, and simple functions of polytopes. We study, among other…

Functional Analysis · Mathematics 2019-07-17 Philipp J. di Dio

The semiring of discrete dynamical systems is a simple algebraic model for modularity in deterministic systems. The objects of the semiring are finite transformations (viewed as directed graphs and regarded up to isomorphism), the sum of…

Rings and Algebras · Mathematics 2026-03-30 Maximilien Gadouleau , Marianne Johnson

We provide an introduction of some basic facts of uniformly almost periodic functions, such as Fourier series representations. A result is then proved about Fourier coefficients which is a generalization of the purely periodic case. We then…

Classical Analysis and ODEs · Mathematics 2015-10-22 Alec Train , Rohit Jain , Will Carlson

We consider invariant hyperfunctions associated to automorphic forms on the upper half plane. We give two interpretations of the period function of Maass forms introduced by Lewis. The first interpretation shows that the period function…

Representation Theory · Mathematics 2008-02-03 Roelof W. Bruggeman

We prove a multilinear local $T(b)$ theorem that differs from previously considered multilinear local $T(b)$ theorems in using exclusively general testing functions $b$ as opposed to a mix of general testing functions and indicator…

Classical Analysis and ODEs · Mathematics 2015-06-04 Mariusz Mirek , Christoph Thiele

We associate to a bimonoidal functor, i.e. a bifunctor which is monoidal in each variable, a nonabelian version of a biextension. We show that such a biextension satisfies additional triviality conditions which make it a bilinear analog of…

Category Theory · Mathematics 2017-11-15 Ettore Aldrovandi

In this paper, we discuss the generalization of finitary $2$-representation theory of finitary $2$-categories to finitary birepresentation theory of finitary bicategories. In previous papers on the subject, the classification of simple…

Representation Theory · Mathematics 2021-09-27 Marco Mackaay , Volodymyr Mazorchuk , Vanessa Miemietz , Daniel Tubbenhauer , Xiaoting Zhang