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In this note, we use certain sesquilinear form to realize small theta lift for even orthogonal-symplectic and unitary dual pairs over p-adic fields.

Number Theory · Mathematics 2026-04-14 Jingsong Chai

We present a one-parameter family of quantum maps whose spectral statistics are of the same intermediate type as observed in polygonal quantum billiards. Our central result is the evaluation of the spectral two-point correlation form factor…

Chaotic Dynamics · Physics 2009-11-10 Olivier Giraud , Jens Marklof , Stephen O'Keefe

This manuscript reviews theoretical results and applications related to quadratic forms in Gaussian random variables. It summarizes definitions, canonical representations, exact and approximate distributional results, numerical inversion…

Signal Processing · Electrical Eng. & Systems 2026-05-12 Mohanad Ahmed , Mahmoud Ghazal , Maaz Mahadi , Tareq Y. Al-Naffouri

The hermitian u-invariants of a central simple algebra with involution are studied. In this context, a new technique is obtained to give bounds for the behavior of these invariants under a quadratic field extension. This is applied to…

Number Theory · Mathematics 2025-01-15 Karim Johannes Becher , Fatma Kader Bingöl

We use the method of Shintani, as developed by Taniguchi and Thorne, to prove the joint cuspidal equidistribution of the shape of quartic fields paired with the shape of its cubic resolvent, when the fields are ordered by discriminant. Our…

Number Theory · Mathematics 2018-01-12 Robert Hough

We initiate the study of the asymptotic behavior of small solutions to one-dimensional Klein-Gordon equations with variable coefficient quadratic nonlinearities. The main discovery in this work is a striking resonant interaction between…

Analysis of PDEs · Mathematics 2021-06-16 Hans Lindblad , Jonas Luhrmann , Avy Soffer

In this paper we will give a unified proof of several results on the sovability of systems of certain equations over finite fields, which were recently obtained by Fourier analytic methods. Roughly speaking, we show that almost all systems…

Combinatorics · Mathematics 2009-04-03 Le Anh Vinh

An inexact Newton type method for numerical minimization of convex piecewise quadratic functions is considered and its convergence is analyzed. Earlier, a similar method was successfully applied to optimizaton problems arising in numerical…

Optimization and Control · Mathematics 2019-01-11 Alexander I. Golikov , Igor E. Kaporin

We study universal quadratic forms over totally real number fields using Dedekind zeta functions. In particular, we prove an explicit upper bound for the rank of universal quadratic forms over a given number field $K$, under the assumption…

Number Theory · Mathematics 2025-10-27 Vítězslav Kala , Mentzelos Melistas

We discuss and relate finiteness conditions for certain field invariants which are studied in quadratic form theory. This includes the $u$-invariant, the reduced stability index and the symbol lengths for Galois cohomology groups with…

Number Theory · Mathematics 2023-03-14 Karim Johannes Becher , Saurabh Gosavi

We study minimal Lorentz surfaces in the pseudo-Euclidean 4-space with neutral metric whose first normal space is two-dimensional and whose Gauss curvature $K$ and normal curvature $\varkappa$ satisfy the inequality $K^2-\varkappa^2 >0$.…

Differential Geometry · Mathematics 2019-08-28 Yana Aleksieva , Velichka Milousheva

This article describes some geometric invariants and conformal anomalies for conformally compact Einstein manifolds and their minimal submanifolds which have recently been discovered via the Anti-de Sitter/Conformal Field Theory…

Differential Geometry · Mathematics 2007-05-23 C. Robin Graham

We investigate the minimal surface problem in the three dimensional Heisenberg group, H, equipped with its standard Carnot-Caratheodory metric. Using a particular surface measure, we characterize minimal surfaces in terms of a sub-elliptic…

Differential Geometry · Mathematics 2007-05-23 Scott D. Pauls

Some trapezoid and mid-point type inequalities related to the Hermite-Hadamard inequality for the mappings defined on a ball in the space are obtained.

General Mathematics · Mathematics 2019-05-28 M. Rostamian Delavar

We construct small models of number fields and deduce a better bound for the number of number fields of given degree and bounded discriminant.

Number Theory · Mathematics 2019-08-30 Jean-Marc Couveignes

New Hardy type inequalities in sectorial area and as a limit in an exterior of a ball are proved. Sharpness of the inequalities is shown as well.

Analysis of PDEs · Mathematics 2021-03-17 Nikolai Kutev , Tsviatko Rangelov

We examine the utility of the quadratic pseudospectrum in photonics and condensed matter. Specifically, the quadratic pseudospectrum represents a method for approaching systems with incompatible observables, as it both minimizes the…

Quantum Physics · Physics 2023-11-30 Alexander Cerjan , Terry A. Loring , Fredy Vides

In this paper, by using the theory of circulant matrices we study some matrices over finite fields which involve the quadratic character and trinomial coefficients.

Number Theory · Mathematics 2022-11-28 Yu-Bo Li , Ning-Liu Wei

We give some results on quadratic normality of reducible curves canonically embedded and partially extend this study to their projective normality.

Algebraic Geometry · Mathematics 2010-09-27 Edoardo Ballico , Silvia Brannetti

The aim of this note is to address the low energy limit of quantum field theories with a minimal length scale. The essential feature of these models is that the minimal length acts as a regulator in the asymptotic high energy limit which is…

High Energy Physics - Theory · Physics 2008-11-26 S. Hossenfelder