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Some quadratic reverses of the continuous triangle inequality for Bochner integral of vector-valued functions in Hilbert spaces are given. Applications for complex-valued functions are provided as well.

Functional Analysis · Mathematics 2007-05-23 Sever Silvestru Dragomir

We prove a degree-six inequality on convex quadrilaterals. This inequality originated from work on the Atiyah-Sutcliffe conjectures on configurations of points in \Bbb{R} ^{3}.

Metric Geometry · Mathematics 2021-12-23 Mazen Bou Khuzam

We prove a fourth order analogue of the Saint-Venant inequality: the mean deflection of a clamped plate under uniform transverse load is maximal for the ball, among plates of prescribed volume in any dimension of space. The method works in…

Analysis of PDEs · Mathematics 2025-01-28 Mark Ashbaugh , Dorin Bucur , Richard S. Laugesen , Roméo Leylekian

In this current article, we introduce the quadruple Shehu transform and its inverse. We also introduce some properties of quadruple Shehu transform. The Convolution theorem and its proof are also discussed. Further, to solve homogeneous and…

General Mathematics · Mathematics 2022-12-01 D. D. Pawar , G. G. Bhuttampalle , S. B. Chavhan , Wagdi F. S. Ahmed , R. D. Kadam

We introduce the notion of orthogonality in a vector space with a topology on it. To serve our purpose, we define orthogonality space for a given vector space X, using the topology on it. We show that for a suitable choice of orthogonality…

Functional Analysis · Mathematics 2019-10-28 Debmalya Sain , Saikat Roy , Kallol Paul

In this work, we study superconvergence properties for some high-order orthogonal polynomial interpolations.The results are two-folds: When interpolating function values, we identify those points where the first and second derivatives of…

Numerical Analysis · Mathematics 2012-04-27 Zhimin Zhang

In this paper, we establish a general inequality for locally strongly convex centroaffine hypersurfaces in $\mathbb{R}^{n+1}$ involving the norm of the covariant derivatives of both the difference tensor $K$ and the Tchebychev vector field…

Differential Geometry · Mathematics 2018-01-16 Xiuxiu Cheng , Zejun Hu

The aim of this note is to give a simple definition of genus zero virtual orientation classes (or fundamental classes) for projective complete intersections or, more generally, for complete intersections in convex varieties, and to prove a…

alg-geom · Mathematics 2008-02-03 Vadim Schechtman

We define a $\mathbb{Z}_2$-valued invariant for transversely-intersecting coassociative $4$-folds equipped with spin structures. Our main result shows this invariant provides an obstruction to separating two such coassociatives through a…

Differential Geometry · Mathematics 2025-10-21 Dylan Galt

Strong Bochner type integrals with values in locally convex spaces are introduced. It is shown that the strong integral exists in the same cases as the weak (Gelfand-Pettis) integral is known to exist. The strong integral has better…

Functional Analysis · Mathematics 2015-02-11 Ralf Beckmann , Anton Deitmar

We extend our previous classification of superpotentials of ``scalar curvature type" for the cohomogeneity one Ricci-flat equations. We now consider the case not covered in our previous paper, i.e., when some weight vector of the…

Differential Geometry · Mathematics 2009-11-13 Andrew Dancer , Mckenzie Wang

We prove the Tate conjecture for integral degree 4 classes on a smooth cubic hypersurface X of dimension 4 over an algebraic closure of a field finitely generated over its prime subfield.

Algebraic Geometry · Mathematics 2019-02-20 François Charles , Alena Pirutka

Some new inequalities of Ostrowski type for twice differentiable mappings whose derivatives in absolute value are s-convex in the second sense are given.Applications for special means are also provided.

Classical Analysis and ODEs · Mathematics 2010-06-15 Erhan Set , Mehmet Zeki Sarikaya , M. Emin Ozdemir

We establish new and stronger inequality of Clarke-Ledyaev type by direct construction.

Functional Analysis · Mathematics 2017-01-09 M. Hamamdjiev , M. Ivanov

An orthogonal complex structure on a domain in R^4 is a complex structure which is integrable and is compatible with the Euclidean metric. This gives rise to a first order system of partial differential equations which is conformally…

Differential Geometry · Mathematics 2009-08-26 Simon Salamon , Jeff Viaclovsky

Notions of the orthogonality and convolution orthogonality are explored with the use of the Kontorovich-Lebedev transform and its convolution. New classes of the corresponding orthogonal polynomials and functions are investigated. Integral…

Classical Analysis and ODEs · Mathematics 2019-09-24 Semyon Yakubovich

We describe 4th order ODEs satisfying two contact invariant conditions of Bryant in terms of the Ricci tensor of a certain gl(2,R) valued connection. We also provide nonhomogeneous examples of such ODEs.

Differential Geometry · Mathematics 2007-10-10 Pawel Nurowski

We prove a converse theorem for the case of quasi-split non-split even special orthogonal groups over finite fields. There are two main difficulties which arise from the outer automorphism and non-split part of the torus. The outer…

Representation Theory · Mathematics 2025-01-29 Alexander Hazeltine

This article studies the set of R-equivalence classes of the group of proper projective similitudes of an algebra with involution of the first kind. The main results concern base fields of characteristic different from 2 over which every…

Number Theory · Mathematics 2026-02-26 M. Archita , Karim Johannes Becher

This work establishes a strong uniqueness property for a class of planar locally integrable vector fields. A result on pointwise convergence to the boundary value is also proved for bounded solutions.

Complex Variables · Mathematics 2007-05-23 S. Berhanu , J. Hounie