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In this paper, we prove that the product of strongly quasi-nonexpansive $\Delta$-demiclosed mappings is also a strongly quasi-nonexpansive orbital $\Delta$-demiclosed mapping in Hadamard spaces. Additionally, we establish the…

Functional Analysis · Mathematics 2025-05-01 Wiparat Worapitpong , Parin Chaipunya , Poom Kumam , Sakan Termkaew

We will introduce the notion of a near-isometric covariant representation of a $C^*$-correspondence and prove its Wold-type decomposition. Wold-type decomposition for doubly twisted left-invertible covariant representations of a product…

Operator Algebras · Mathematics 2026-01-21 Niraj Kumar , Azad Rohilla , Harsh Trivedi

Estimating the coefficient functionals on various classes of holomorphic functions traditionally forms an important field of geometric complex analysis and its mathematical and physical applications. These coefficients reflect fundamental…

Complex Variables · Mathematics 2025-07-29 Samuel L. Krushkal

Let $S \subset \mathbb{Z}^{d}$ be a finitely generated subsemigroup. Let $E$ be a product system over $S$. We show that there exists an infinite dimensional separable Hilbert space $\mathcal{H}$ and a semigroup $\alpha:=\{\alpha_x\}_{x \in…

Operator Algebras · Mathematics 2017-09-27 S. P. Murugan , S. Sundar

In this paper we consider the linear second order partial differential equation with non-constant coefficients; then by using the double convolution product we produce new equations with polynomials coefficients and we classify the new…

Analysis of PDEs · Mathematics 2009-01-19 A. Kilicman , H. Eltayeb

We introduce a notion of an integral along a bimonoid homomorphism as a simultaneous generalization of the integral and cointegral of bimonoids. The purpose of this paper is to characterize an existence of a specific integral, called a…

Quantum Algebra · Mathematics 2020-11-03 Minkyu Kim

We give estimates for the convolution product of an arbitrary number of endlessly continuable functions. This allows us to deal with nonlinear operations for the corresponding resurgent series, e.g. substitution into a convergent power…

Dynamical Systems · Mathematics 2016-09-07 Shingo Kamimoto , David Sauzin

This paper focuses on a generalization of the *-product called $\mathbf{C}$-product. This product, first introduced by Durante, Klement and Quesada-Molina, was used to characterize classes of compatible copulas. The $\mathbf{C}$-product of…

Statistics Theory · Mathematics 2012-04-10 Pongpol Ruankong , Songkiat Sumetkijakan

We introduce Hochschild (co-)homology of morphisms of schemes or analytic spaces and study its fundamental properties. In analogy with the cotangent complex we introduce the so called (derived) Hochschild complex of a morphism; the…

Algebraic Geometry · Mathematics 2007-05-23 R. -O. Buchweitz , H. Flenner

We show that for a C*-algebra A and a discrete group G with an action of G on A, the reduced crossed product C*-algebra possesses a natural generalization of the convolution product, which we suggest should be named the Hadamard product. We…

Operator Algebras · Mathematics 2019-06-13 Erik Christensen

Holomorphic (nondegenerate) mappings between complex manifolds of the same dimension are of special interest. For example, they appear as coverings of complex manifolds. At the same time they have very strong "extra" extension properties in…

Complex Variables · Mathematics 2008-11-11 S. Ivashkovich

In this paper, we compute the cohomology ring of all homology split polyhedral product spaces and the cohomology algebra over a field of all polyhedral product spaces. As an application, we give two polyhedral product spaces such that all…

Algebraic Topology · Mathematics 2016-05-19 Qibing Zheng

We define generalised higher Whitehead maps between polyhedral products. By investigating the interplay between the homotopy-theoretic properties of polyhedral products and the combinatorial properties of simplicial complexes, we describe…

Algebraic Topology · Mathematics 2026-03-04 Jelena Grbic , George Simmons , Matthew Staniforth

We obtain two characterizations of the bi-inner Hopf *-automorphisms of a finite-dimensional Hopf C*-algebra, by means of an analysis of the structure of convolution products in this class of Hopf C*-algebra.

Operator Algebras · Mathematics 2014-06-11 Dan Z. Kučerovskyý

It is shown, that extended particle-like objects should infinitely long collapse into some discontinuous configurations of the same topology, but vanishing mass. Analytic results concerning the general properties and asymptotic rates of…

High Energy Physics - Theory · Physics 2007-05-23 K. Sveshnikov

In this paper, we introduce a generalization of derivations. Using these so-called secondary derivations, along with an analogue of Connes' Long Exact Sequence, we are able to provide computations in low dimension for the secondary…

Commutative Algebra · Mathematics 2023-02-24 Kylie Bennett , Elizabeth Heil , Jacob Laubacher

Extending work of Saneblidze-Umble and others, we use diagonals for the associahedron and multiplihedron to define tensor products of A-infinity algebras, modules, algebra homomorphisms, and module morphisms, as well as to define a bimodule…

Rings and Algebras · Mathematics 2025-10-21 Robert Lipshitz , Peter Ozsváth , Dylan Thurston

A systematic study of the contributions at infinity for the cohomology of variations of polarized Hodge structures over quasicompact K\"ahler manifolds. Several isomorphisms between different cohomologies given.

Algebraic Geometry · Mathematics 2007-05-23 Juergen Jost , Yihu Yang , Kang Zuo

We first review the introduction of star products in connection with deformations of Poisson brackets and the various cohomologies that are related to them. Then we concentrate on what we have called ``closed star products" and their…

High Energy Physics - Theory · Physics 2008-02-03 Moshé Flato , Daniel Sternheimer

In this paper some Hadamard_type inequalities for product of convex functions of 2-variables on the co-ordinates are given.

Classical Analysis and ODEs · Mathematics 2011-04-29 M Emin Ozdemir , Ahmet Ocak Akdemir