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247 Results Found

  • Article
  • Open Access
1,740 Views
15 Pages

Orlicz Spaces and Their Hyperbolic Composition Operators

  • Mohammed Said Al Ghafri,
  • Yousef Estaremi and
  • Zhidong Huang

11 September 2024

In this paper, by extending some Lp-norm inequalities to similar inequalities for Orlicz space (LΦ-norm), we provide equivalent conditions for composition operators to have the shadowing property on the Orlicz space LΦ(μ). Additionally, we...

  • Feature Paper
  • Article
  • Open Access
1,697 Views
13 Pages

In the paper, we consider holomorphically projective mappings of n-dimensional pseudo-Riemannian Kähler and hyperbolic Kähler spaces. We refined the fundamental linear equations of the above problems for metrics of differentiability class C...

  • Article
  • Open Access
10 Citations
2,791 Views
16 Pages

4 July 2023

In this paper, we modify the KF-iteration process into hyperbolic metric spaces where the symmetry condition is satisfied and establish the weak w2-stability and data dependence results for contraction mappings. We also prove some Δ-convergence...

  • Article
  • Open Access
5 Citations
2,508 Views
8 Pages

19 July 2021

The concept of an endpoint is a relatively new concept compared to the concept of a fixed point. The aim of this paper is to perform a convergence analysis of M—iteration involving α—Reich–Suzuki nonexpansive mappings. In this paper, we prove strong...

  • Article
  • Open Access
2,292 Views
9 Pages

Theory of Quantum Mechanical Scattering in Hyperbolic Space

  • L. L. Jenkovszky,
  • Y. A. Kurochkin,
  • V. S. Otchik,
  • P. F. Pista,
  • N. D. Shaikovskaya and
  • D. V. Shoukavy

31 January 2023

The theory of quantum mechanical scattering in hyperbolic space is developed. General formulas based on usage of asymptotic form of the solution of the Shrödinger equation in hyperbolic space are derived. The concept of scattering length in hype...

  • Proceeding Paper
  • Open Access
1,567 Views
9 Pages

We present a novel application of transcendental equations for nonlinear distance optimization in hyperbolic space. Through asymptotic approximations using Fourier and Taylor series expansions, we obtain approximations for the transcendental equation...

  • Article
  • Open Access
2 Citations
2,344 Views
18 Pages

25 December 2022

Hyperbolic space has received extensive attention because it can accurately and concisely represent hierarchical data. Currently, for knowledge graph completion tasks, the introduction of exogenous information of entities can enrich the knowledge rep...

  • Article
  • Open Access
6 Citations
6,179 Views
13 Pages

Hyperbolic Function Embedding: Learning Hierarchical Representation for Functions of Source Code in Hyperbolic Space

  • Mingming Lu,
  • Yan Liu,
  • Haifeng Li,
  • Dingwu Tan,
  • Xiaoxian He,
  • Wenjie Bi and
  • Wendbo Li

18 February 2019

Recently, source code mining has received increasing attention due to the rapid increase of open-sourced code repositories and the tremendous values implied in this large dataset, which can help us understand the organization of functions or classes...

  • Article
  • Open Access
554 Views
17 Pages

30 November 2025

This study presents a common fixed-point iteration process that includes two asymptotically nonexpansive self-mappings in a hyperbolic space and their delta convergence. To support our results, we provide an example with a comparison table and suffic...

  • Article
  • Open Access
1 Citations
1,361 Views
21 Pages

On Mixed Fractional Lifting Oscillation Spaces

  • Imtithal Alzughaibi,
  • Mourad Ben Slimane and
  • Obaid Algahtani

We introduce hyperbolic oscillation spaces and mixed fractional lifting oscillation spaces expressed in terms of hyperbolic wavelet leaders of multivariate signals on Rd, with d2. Contrary to Besov spaces and fractional Sobolev spaces with domina...

  • Article
  • Open Access
16 Citations
2,083 Views
26 Pages

Some New Results on Convergence, Weak w2-Stability and Data Dependence of Two Multivalued Almost Contractive Mappings in Hyperbolic Spaces

  • Austine Efut Ofem,
  • Jacob Ashiwere Abuchu,
  • Reny George,
  • Godwin Chidi Ugwunnadi and
  • Ojen Kumar Narain

11 October 2022

In this article, we introduce a new mixed-type iterative algorithm for approximation of common fixed points of two multivalued almost contractive mappings and two multivalued mappings satisfying condition (E) in hyperbolic spaces. We consider new con...

  • Article
  • Open Access
1,574 Views
13 Pages

18 November 2023

The paper shows that it is possible to construct quantum chromodynamics as a rigorous theory on the basis of employment of hyperbolic unitary group SUh(3), which is a symmetry group for the three-dimensional complex space of the hyperbolic type. Such...

  • Article
  • Open Access
1 Citations
1,098 Views
27 Pages

23 November 2024

In this paper, we create a family of neural network (NN) operators employing a parametrized and deformed half-hyperbolic tangent function as an activation function and a density function produced by the same activation function. Moreover, we consider...

  • Article
  • Open Access
5 Citations
2,601 Views
11 Pages

Regular Tessellations of Maximally Symmetric Hyperbolic Manifolds

  • Jan Brandts,
  • Michal Křížek and
  • Lawrence Somer

24 January 2024

We first briefly summarize several well-known properties of regular tessellations of the three two-dimensional maximally symmetric manifolds, E2, S2, and H2, by bounded regular tiles. For instance, there exist infinitely many regular tessellations of...

  • Article
  • Open Access
4 Citations
2,110 Views
15 Pages

Strong and Δ-Convergence Fixed-Point Theorems Using Noor Iterations

  • Asifa Tassaddiq,
  • Shazia Kanwal,
  • Farha Lakhani and
  • Rekha Srivastava

6 March 2023

A wide range of new research articles in artificial intelligence, logic programming, and other applied sciences are based on fixed-point theorems. The aim of this article is to present an approximation method for finding the fixed point of generalize...

  • Article
  • Open Access
14 Citations
5,068 Views
24 Pages

24 August 2022

Phylogenetic placement, used widely in ecological analyses, seeks to add a new species to an existing tree. A deep learning approach was previously proposed to estimate the distance between query and backbone species by building a map from gene seque...

  • Article
  • Open Access
14 Citations
3,339 Views
24 Pages

Translation-Based Embeddings with Octonion for Knowledge Graph Completion

  • Mei Yu,
  • Chen Bai,
  • Jian Yu,
  • Mankun Zhao,
  • Tianyi Xu,
  • Hongwei Liu,
  • Xuewei Li and
  • Ruiguo Yu

13 April 2022

Knowledge representation learning achieves the automatic completion of knowledge graphs (KGs) by embedding entities into continuous low-dimensional vector space. In knowledge graph completion (KGC) tasks, the inter-dependencies and hierarchical infor...

  • Article
  • Open Access
13 Citations
2,634 Views
38 Pages

2 December 2019

In this paper, we study the initial value problem for a semilinear delay hyperbolic equation in Hilbert spaces with a self-adjoint positive definite operator. The mean theorem on the existence and uniqueness of a bounded solution of this differential...

  • Article
  • Open Access
10 Citations
2,946 Views
15 Pages

13 December 2021

The current study is devoted to investigating the existence and uniqueness of solutions for a new class of symmetrically coupled system of nonlinear hyperbolic partial-fractional differential equations in generalized Banach spaces in the sense of &ps...

  • Article
  • Open Access
3 Citations
2,969 Views
14 Pages

17 November 2022

The six-dimensional pseudo-Euclidean space E3,3 with signature (3,3) is proposed as a model of real physical space at the subparticle scale. The conserved quantum characteristics of elementary particles, such as spin, isospin, electric and baryon cha...

  • Article
  • Open Access
3 Citations
1,966 Views
14 Pages

Fixed-Point Convergence of Multi-Valued Non-Expansive Mappings with Applications

  • Akbar Azam,
  • Maliha Rashid,
  • Amna Kalsoom and
  • Faryad Ali

29 October 2023

This paper is dedicated to the advancement of fixed-point results for multi-valued asymptotically non-expansive maps regarding convergence criteria in complete uniformly convex hyperbolic metric spaces that are endowed with a graph. The famous fixed-...

  • Article
  • Open Access
8 Citations
2,905 Views
16 Pages

Hyperbolic Directed Hypergraph-Based Reasoning for Multi-Hop KBQA

  • Guanchen Xiao,
  • Jinzhi Liao,
  • Zhen Tan,
  • Yiqi Yu and
  • Bin Ge

21 October 2022

The target of the multi-hop knowledge base question-answering task is to find answers of some factoid questions by reasoning across multiple knowledge triples in the knowledge base. Most of the existing methods for multi-hop knowledge base question a...

  • Article
  • Open Access
1 Citations
4,013 Views
15 Pages

Visualization of Escher-like Spiral Patterns in Hyperbolic Space

  • Chongyang Qiu,
  • Xinfei Li,
  • Jianhua Pang and
  • Peichang Ouyang

11 January 2022

Spirals, tilings, and hyperbolic geometry are important mathematical topics with outstanding aesthetic elements. Nonetheless, research on their aesthetic visualization is extremely limited. In this paper, we give a simple method for creating Escher-l...

  • Article
  • Open Access
1 Citations
1,608 Views
11 Pages

Tunneling Currents in the Hyperbolic Phase Space

  • Ivan F. Valtierra and
  • Andrei B. Klimov

28 July 2024

We introduce the quantum currents for quantum systems with an SU(1,1) dynamic symmetry group whose evolution is governed by a non-linear Hamiltonian possessing a continuous spectrum and apply them to the analysis of the tunneling dynamics on the hype...

  • Article
  • Open Access
343 Views
23 Pages

4 January 2026

This study presents a novel fifth-order unequal-sized trigonometric weighted essentially non-oscillatory (US-TWENO) scheme and a novel hybrid US-TWENO (HUS-TWENO) scheme with a novel troubled cell indicator in a finite difference framework to address...

  • Article
  • Open Access
1,127 Views
20 Pages

4 June 2024

A body may have a structural, thermal, electromagnetic or optical role. In wave propagation, many models are described for transmission problems, whose solutions are defined in two or more domains. In this paper, we consider an inverse source hyperbo...

  • Article
  • Open Access
21 Citations
3,566 Views
18 Pages

24 September 2020

Accurate remote determination of the object coordinates in 3D space is one of the main questions in many applications. In one of the most popular methods, such determination of the location of an object uses the measurement by receiving an electromag...

  • Article
  • Open Access
2 Citations
1,478 Views
15 Pages

This paper studies synchronization behaviors of two sorts of non-linear fractional-order complex spatio-temporal networks modeled by hyperbolic space-varying PDEs (FCSNHSPDEs), respectively, with time-invariant delays and time-varying delays, includi...

  • Article
  • Open Access
1,506 Views
13 Pages

11 June 2024

A cyclic antipodal pair of a circle is a pair of points that are the intersection of the circle with the diameter of the circle. In this article, a recent proof of Ptolemy’s Theorem—simultaneously in both (i) Euclidean geometry and (ii) t...

  • Article
  • Open Access
5 Citations
2,854 Views
10 Pages

11 November 2019

In this paper, we consider the recently introduced C A T p ( 0 ) , where the comparison triangles belong to p , for p 2 . We first establish an inequality in these nonlinear metric spaces. Then, we use it to prove the...

  • Article
  • Open Access
3,389 Views
12 Pages

4 January 2019

The ‘projective theory of relativity’ is a theory developed historically by Oswald Veblen and Banesh Hoffmann, Jan Arnoldus Schouten and David van Dantzig. This theory differs radically from Kaluza-Klein/conformal type theories of spaceti...

  • Article
  • Open Access
8 Citations
6,542 Views
41 Pages

12 September 2020

We study the Hilbert geometry induced by the Siegel disk domain, an open-bounded convex set of complex square matrices of operator norm strictly less than one. This Hilbert geometry yields a generalization of the Klein disk model of hyperbolic geomet...

  • Feature Paper
  • Article
  • Open Access
1 Citations
2,548 Views
9 Pages

27 July 2023

Ptolemy’s theorem in Euclidean geometry, named after the Greek astronomer and mathematician Claudius Ptolemy, is well known. We translate Ptolemy’s theorem from analytic Euclidean geometry into the Poincaré ball model of analytic h...

  • Article
  • Open Access
1,697 Views
16 Pages

Intelligent vehicular networks can not only connect various smart terminals to manned or unmanned vehicles but also to roads and people’s hands. In order to support diverse vehicle-to-everything (V2X) applications in dynamic, intelligent vehicu...

  • Article
  • Open Access
843 Views
30 Pages

23 May 2025

We discuss a formalism where a universe is identified with the support of a wave function propagating through space–time. The dynamics is of a squeezing type, with shrinking in time and expanding in space. As opposed to classical cosmology, the...

  • Article
  • Open Access
1,197 Views
24 Pages

10 June 2025

For a massive scalar field in a fixed Schwarzschild background, the radial wave equation obeyed by Fourier modes is first studied. After reducing such a radial wave equation to its normal form, we first study approximate solutions in the neighborhood...

  • Article
  • Open Access
155 Views
108 Pages

6 March 2026

We present Hyperbolic Symmetric Hypermodular Neural Operators (ONHSH), a novel operator learning framework for solving partial differential equations (PDEs) in curved, anisotropic, and modularly structured domains. The architecture integrates three c...

  • Article
  • Open Access
2,861 Views
15 Pages

7 October 2021

A parametric theoretical boundary equation of a period-3 hyperbolic component in the Mandelbrot set is established from a perspective of Euclidean plane geometry. We not only calculate the interior area, perimeter and curvature of the boundary line b...

  • Article
  • Open Access
2 Citations
4,014 Views
20 Pages

Low-Complexity Hyperbolic Embedding Schemes for Temporal Complex Networks

  • Hao Jiang,
  • Lixia Li,
  • Yuanyuan Zeng,
  • Jiajun Fan and
  • Lijuan Shen

29 November 2022

Hyperbolic embedding can effectively preserve the property of complex networks. Though some state-of-the-art hyperbolic node embedding approaches are proposed, most of them are still not well suited for the dynamic evolution process of temporal compl...

  • Review
  • Open Access
3 Citations
2,682 Views
21 Pages

4 March 2023

Ptolemy’s Theorem in Euclidean geometry, named after the Greek astronomer and mathematician Ptolemy, is well-known. By means of the relativistic model of hyperbolic geometry, we translate Ptolemy’s Theorem from Euclidean geometry into the...

  • Article
  • Open Access
3 Citations
5,199 Views
26 Pages

Relativistic localizing systems that extend relativistic positioning systems show that pseudo-Riemannian space-time geometry is somehow encompassed in a particular four-dimensional projective geometry. The resulting geometric structure is then that o...

  • Article
  • Open Access
2,756 Views
8 Pages

Geodesic Chord Property and Hypersurfaces of Space Forms

  • Dong-Soo Kim,
  • Young Ho Kim and
  • Dae Won Yoon

16 August 2019

In the Euclidean space E n , hyperplanes, hyperspheres and hypercylinders are the only isoparametric hypersurfaces. These hypersurfaces are also the only ones with chord property, that is, the chord connecting two points on them meets the hy...

  • Article
  • Open Access
8 Citations
3,926 Views
19 Pages

Origins of Hyperbolicity in Color Perception

  • Nicoletta Prencipe,
  • Valérie Garcin and
  • Edoardo Provenzi

In 1962, H. Yilmaz published a very original paper in which he showed the striking analogy between Lorentz transformations and the effect of illuminant changes on color perception. As a consequence, he argued that a perceived color space endowed with...

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