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259 Results Found

  • Review
  • Open Access
6 Citations
2,771 Views
110 Pages

This review is devoted to the universal algebraic and geometric properties of the non-relativistic quantum current algebra symmetry and to their representations subject to applications in describing geometrical and analytical properties of quantum an...

  • Review
  • Open Access
2 Citations
2,098 Views
35 Pages

Quantum Current Algebra Symmetry and Description of Boltzmann Type Kinetic Equations in Statistical Physics

  • Lev I. Ivankiv,
  • Yarema A. Prykarpatsky,
  • Valeriy H. Samoilenko and
  • Anatolij K. Prykarpatski

9 August 2021

We review a non-relativistic current algebra symmetry approach to constructing the Bogolubov generating functional of many-particle distribution functions and apply it to description of invariantly reduced Hamiltonian systems of the Boltzmann type ki...

  • Article
  • Open Access
1 Citations
2,073 Views
17 Pages

1 August 2019

Based on the G. Goldin’s quantum current algebra symmetry representation theory, have succeeded in explaining a hidden relationship between the quantum many-particle Hamiltonian operators, defined in the Fock space, their factorized structure a...

  • Article
  • Open Access
2 Citations
4,247 Views
31 Pages

27 November 2015

Let \(\mathbf{H}\) be the quaternion algebra. Let \(\mathfrak{g}\) be a complex Lie algebra and let \(U(\mathfrak{g})\) be the enveloping algebra of \(\mathfrak{g}\). The quaternification \(\mathfrak{g}^{\mathbf{H}}=\)\(\,(\,\mathbf{H}\otimes U(\math...

  • Article
  • Open Access
12 Citations
4,930 Views
17 Pages

Quadrature Current Compensation in Non-Sinusoidal Circuits Using Geometric Algebra and Evolutionary Algorithms

  • Francisco G. Montoya,
  • Alfredo Alcayde,
  • Francisco M. Arrabal-Campos and
  • Raul Baños

21 February 2019

Non-linear loads in circuits cause the appearance of harmonic disturbances both in voltage and current. In order to minimize the effects of these disturbances and, therefore, to control the flow of electricity between the source and the load, passive...

  • Review
  • Open Access
20 Citations
5,742 Views
71 Pages

28 September 2021

We review some recent progress in the theory of electroweak radiative corrections in semileptonic decay processes. The resurrection of the so-called Sirlin’s representation based on current algebra relations permits a clear separation between the per...

  • Article
  • Open Access
170 Views
61 Pages

12 February 2026

The position operator r^ appears as ip in wave mechanics, while its matrix form (e.g., under a Bloch basis) is well known diverging in diagonals, causing difficulties in basis transformation, observable yielding, etc. We aim to find a convergen...

  • Article
  • Open Access
1,001 Views
15 Pages

Computing the Network’s Equilibrium Point at the Fault Clearing Instant in Transient Stability Studies

  • Alejandro Pizano-Martínez,
  • Reymundo Ramírez-Betancour,
  • Enrique A. Zamora-Cárdenas and
  • Claudio R. Fuerte-Esquivel

11 October 2024

This paper proposes an approach for computing the network’s equilibrium point related to the fault clearing time in transient stability studies. The computation of this point is not a trivial task, particularly when the algebraic network’...

  • Feature Paper
  • Article
  • Open Access
1,276 Views
10 Pages

4 October 2024

We apply a well known technique of theoretical physics, known as geometric algebra or Clifford algebra, to linear electrical circuits with nonsinusoidal voltages and currents. We rederive from the first principles the geometric algebra approach to th...

  • Article
  • Open Access
7 Citations
3,668 Views
17 Pages

10 December 2021

We generalize the property of complex numbers to be closely related to Euclidean circles by constructing new classes of complex numbers which in an analogous sense are closely related to semi-antinorm circles, ellipses, or functionals which are homog...

  • Review
  • Open Access
1,276 Views
53 Pages

22 July 2025

These notes are an informal overview of techniques related to deformation theory in the context of physics. Beginning from motivation for the concept of a sheaf, they build up through derived functors, resolutions, and the functor of points to the no...

  • Article
  • Open Access
24 Citations
3,660 Views
22 Pages

A Mixed-Integer Nonlinear Programming Model for Optimal Reconfiguration of DC Distribution Feeders

  • O. D. Montoya,
  • W. Gil-González,
  • J. C. Hernández,
  • D. A. Giral-Ramírez and
  • A. Medina-Quesada

27 August 2020

This paper deals with the optimal reconfiguration problem of DC distribution networks by proposing a new mixed-integer nonlinear programming (MINLP) formulation. This MINLP model focuses on minimising the power losses in the distribution lines by ref...

  • Article
  • Open Access
7 Citations
3,273 Views
28 Pages

6 November 2018

The Lie algebraic scheme for constructing Hamiltonian operators is differential-algebraically recast and an effective approach is devised for classifying the underlying algebraic structures of integrable Hamiltonian systems. Lie–Poisson analysi...

  • Article
  • Open Access
2 Citations
2,421 Views
10 Pages

Using the Evolution Operator to Classify Evolution Algebras

  • Desamparados Fernández-Ternero,
  • Víctor M. Gómez-Sousa and
  • Juan Núñez-Valdés

Evolution algebras are currently widely studied due to their importance not only “per se” but also for their many applications to different scientific disciplines, such as Physics or Engineering, for instance. This paper deals with these types of alg...

  • Article
  • Open Access
8 Citations
2,597 Views
17 Pages

Solutions of the Yang–Baxter Equation Arising from Brauer Configuration Algebras

  • Agustín Moreno Cañadas,
  • Adolfo Ballester-Bolinches and
  • Isaías David Marín Gaviria

Currently, researching the Yang–Baxter equation (YBE) is a subject of great interest among scientists of diverse areas in mathematics and other sciences. One of the fundamental open problems is to find all of its solutions. The investigation de...

  • Review
  • Open Access
624 Views
66 Pages

New Perspectives on Kac–Moody Algebras Associated with Higher-Dimensional Manifolds

  • Rutwig Campoamor-Stursberg,
  • Alessio Marrani and
  • Michel Rausch de Traubenberg

31 October 2025

In this review, we present a general framework for the construction of Kac–Moody (KM) algebras associated to higher-dimensional manifolds. Starting from the classical case of loop algebras on a circle S1, we extend the approach to compact and n...

  • Article
  • Open Access
4,968 Views
15 Pages

1 October 2015

This paper addresses the problem of computing the family of two-filiform Lie algebra laws of dimension nine using three Lie algebra properties converted into matrix form properties: Jacobi identity, nilpotence and quasi-filiform property. The interes...

  • Article
  • Open Access
18 Citations
3,557 Views
13 Pages

Cyclicity in EL–Hypergroups

  • Michal Novák,
  • Štepán Křehlík and
  • Irina Cristea

7 November 2018

In the algebra of single-valued structures, cyclicity is one of the fundamental properties of groups. Therefore, it is natural to study it also in the algebra of multivalued structures (algebraic hyperstructure theory). However, when one considers th...

  • Review
  • Open Access
2,061 Views
38 Pages

30 December 2023

This is a noticeably short biography and introductory paper on multiplier Hopf algebras. It delves into questions regarding the significance of this abstract construction and the motivation behind its creation. It also concerns quantum linear groups,...

  • Article
  • Open Access
1,969 Views
22 Pages

27 January 2021

The Hochschild cohomological dimension of any commutative k-algebra is lower-bounded by the least-upper bound of the flat-dimension difference and its global dimension. Our result is used to show that for a smooth affine scheme X satisfying Pointcar&...

  • Article
  • Open Access
6 Citations
2,709 Views
11 Pages

16 January 2020

Introduced by S.A. Lomov, the concept of a pseudoanalytic (pseudoholomorphic) solution laid the foundation for the development of the singular perturbation analytical theory. In order for this concept to work in case of linear problems, an apparatus...

  • Article
  • Open Access
2 Citations
3,656 Views
24 Pages

1 October 2019

Point orthogonal projection onto planar algebraic curve plays an important role in computer graphics, computer aided design, computer aided geometric design and other fields. For the case where the test point p is very far from the planar algeb...

  • Article
  • Open Access
1 Citations
1,903 Views
10 Pages

Algebraic Approach to Transformations on Hypercube System

  • Ş. Ş. Kahramanlı and
  • N. M. Allahverdi

In this study some algebraic transformations on hypercube system are proposed. The presented transformations of forbidden subcubes provide defining set of all maximal and nonfaulty subcubes, and subset of minimal and nonfaulty subcubes included certa...

  • Article
  • Open Access
2,473 Views
22 Pages

11 October 2022

Point orthogonal projection onto an algebraic surface is a very important topic in computer-aided geometric design and other fields. However, implementing this method is currently extremely challenging and difficult because it is difficult to achieve...

  • Article
  • Open Access
3 Citations
8,029 Views
19 Pages

We propose numerical algorithms which can be integrated with modern computer algebra systems in a way that is easily implemented to approximate the sine and cosine functions with an arbitrary accuracy. Our approach is based on Taylor’s expansio...

  • Article
  • Open Access
10 Citations
3,089 Views
17 Pages

Geometric Algebra Framework Applied to Symmetrical Balanced Three-Phase Systems for Sinusoidal and Non-Sinusoidal Voltage Supply

  • Francisco G. Montoya,
  • Raúl Baños,
  • Alfredo Alcayde,
  • Francisco Manuel Arrabal-Campos and
  • Javier Roldán Pérez

31 May 2021

This paper presents a new framework based on geometric algebra (GA) to solve and analyse three-phase balanced electrical circuits under sinusoidal and non-sinusoidal conditions. The proposed approach is an exploratory application of the geometric alg...

  • Article
  • Open Access
3 Citations
1,837 Views
23 Pages

Generalized NTRU Algorithms on Algebraic Rings

  • Qinghao Wu,
  • Juan Zhang and
  • Zichen Li

31 October 2024

The NTRU (Number Theory Research Unit) is a prominent post-quantum public key cryptography algorithm and a current focus of research. Although many NTRU variants have been proposed, a comprehensive generalization of these variants is still lacking. T...

  • Article
  • Open Access
9 Citations
5,713 Views
13 Pages

6 September 2016

Since 1892, the electrical engineering scientific community has been seeking a power theory for interpreting the power flow within electric networks under non-sinusoidal conditions. Although many power theories have been proposed regarding non-sinuso...

  • Article
  • Open Access
403 Views
52 Pages

Quantum anomalies are traditionally understood as classical symmetries that fail to survive quantization, while experimental “anomalies” denote deviations between theoretical predictions and measured values. In this work, we develop a uni...

  • Article
  • Open Access
2,354 Views
18 Pages

Comprehensive Geographic Networks Analysis: Statistical, Geometric and Algebraic Perspectives

  • Jiawei Zhu,
  • Xinqiang Ma,
  • Hemeng Yang,
  • Yan Li,
  • Chao Tao and
  • Haifeng Li

12 April 2022

Using complex network analysis methods to analyze the internal structure of geographic networks is a popular topic in urban geography research. Statistical analysis occupies a dominant position in the current research on geographic networks. This per...

  • Article
  • Open Access
4 Citations
2,939 Views
10 Pages

A New Family of Boolean Functions with Good Cryptographic Properties

  • Guillermo Sosa-Gómez,
  • Octavio Paez-Osuna,
  • Omar Rojas and
  • Evaristo José Madarro-Capó

25 March 2021

In 2005, Philippe Guillot presented a new construction of Boolean functions using linear codes as an extension of the Maiorana–McFarland’s (MM) construction of bent functions. In this paper, we study a new family of Boolean functions with cryptograph...

  • Article
  • Open Access
7 Citations
2,683 Views
22 Pages

A Detailed Study of Mathematical Rings in q-Rung Orthopair Fuzzy Framework

  • Asima Razzaque,
  • Abdul Razaq,
  • Ghaliah Alhamzi,
  • Harish Garg and
  • Muhammad Iftikhar Faraz

10 March 2023

Symmetry-related problems can be addressed by means of group theory, and ring theory can be seen as an extension of additive group theory. Ring theory, a significant topic in abstract algebra, is currently active in a diverse range of study domains a...

  • Article
  • Open Access
2 Citations
1,526 Views
27 Pages

Matrix-Sequences of Geometric Means in the Case of Hidden (Asymptotic) Structures

  • Danyal Ahmad,
  • Muhammad Faisal Khan and
  • Stefano Serra-Capizzano

24 January 2025

In the current work, we analyze the spectral distribution of the geometric mean of two or more matrix-sequences constituted by Hermitian positive definite matrices, under the assumption that all input matrix-sequences belong to the same Generalized L...

  • Article
  • Open Access
19 Citations
2,772 Views
25 Pages

Improved Block-Pulse Functions for Numerical Solution of Mixed Volterra-Fredholm Integral Equations

  • Ji-Huan He,
  • Mahmoud H. Taha,
  • Mohamed A. Ramadan and
  • Galal M. Moatimid

24 August 2021

The present paper employs a numerical method based on the improved block–pulse basis functions (IBPFs). This was mainly performed to resolve the Volterra–Fredholm integral equations of the second kind. Those equations are often simplified into a line...

  • Review
  • Open Access
976 Views
40 Pages

Quaternionic and Octonionic Frameworks for Quantum Computation: Mathematical Structures, Models, and Fundamental Limitations

  • Johan Heriberto Rúa Muñoz,
  • Jorge Eduardo Mahecha Gómez and
  • Santiago Pineda Montoya

26 November 2025

We develop detailed quaternionic and octonionic frameworks for quantum computation grounded on normed division algebras. Our central result is to prove the polynomial computational equivalence of quaternionic and complex quantum models: Computation o...

  • Article
  • Open Access
631 Views
23 Pages

Nonlinear Algebraic Parameter Estimation of Doubly Fed Induction Machine Based on Rotor Current Falling Curves

  • Alexander Glazyrin,
  • Dmitriy Bunkov,
  • Evgeniy Bolovin,
  • Yusup Isaev,
  • Vladimir Kopyrin,
  • Sergey Kladiev,
  • Alexander Filipas,
  • Sergey Langraf,
  • Rustam Khamitov and
  • Marina Deneko
  • + 3 authors

14 August 2025

Currently, wind turbines utilize doubly fed induction machines that incorporate a frequency converter in the rotor circuit to manage slip energy. This setup ensures a stable voltage amplitude and frequency that align with the alternating current. It...

  • Article
  • Open Access
12 Citations
1,831 Views
15 Pages

In this article, the authors propose to investigate the numerical solutions of several fractional-order models of the multi-space coupled Korteweg–De Vries equation involving many different kernels. In order to transform these models into a set...

  • Article
  • Open Access
5 Citations
1,901 Views
15 Pages

7 September 2023

This article deals with the implementation of fuzzy differential transform method for solving a system of nonlinear fuzzy integro-differential equations. This system appears in a model of biological species living together. Though the differential tr...

  • Article
  • Open Access
2 Citations
1,905 Views
16 Pages

15 November 2022

Long electromagnetic transients occur in electrical systems because of switching and impulse actions As a result, the simulation time of such processes can be long, which is undesirable. Simulation time is significantly increased if the circuit in th...

  • Article
  • Open Access
9 Citations
1,973 Views
10 Pages

Gravitational Baryogenesis: Problems and Possible Resolution

  • Elena Arbuzova,
  • Alexander Dolgov,
  • Koushik Dutta and
  • Raghavan Rangarajan

3 February 2023

The coupling of baryonic current to the derivative of the curvature scalar, R, inherent to gravitational baryogenesis (GBG), leads to a fourth-order differential equation of motion for R instead of the algebraic one of general relativity (GR). The fo...

  • Article
  • Open Access
16 Citations
2,932 Views
25 Pages

16 October 2019

Probabilistic safety assessment (PSA) of nuclear facilities on external multi-hazards has become a major issue after the Fukushima accident in 2011. However, the existing external hazard PSA methodology is for single hazard events and cannot cover th...

  • Article
  • Open Access
9 Citations
4,454 Views
15 Pages

Third Grade Students’ Use of Relational Thinking

  • Marta Molina and
  • Encarnación Castro

18 January 2021

Current mathematics curricula have as one of their fundamental objectives the development of number sense. This is understood as a set of skills. Some of them have an algebraic nature such as acquiring an abstract understanding of relations between n...

  • Article
  • Open Access
1,003 Views
16 Pages

Behavioral Biometrics in VR: Changing Sensor Signal Modalities

  • Aleksander Sawicki,
  • Khalid Saeed and
  • Wojciech Walendziuk

20 September 2025

The rapid evolution of virtual reality systems and the broader metaverse landscape has prompted growing research interest in biometric authentication methods for user verification. These solutions offer an additional layer of access control that surp...

  • Feature Paper
  • Article
  • Open Access
8 Citations
3,174 Views
27 Pages

15 June 2022

The singularities of serial robotic manipulators are those configurations in which the robot loses the ability to move in at least one direction. Hence, their identification is fundamental to enhance the performance of current control and motion plan...

  • Article
  • Open Access
21 Citations
3,285 Views
20 Pages

Optimal Location-Reallocation of Battery Energy Storage Systems in DC Microgrids

  • Oscar Danilo Montoya,
  • Walter Gil-González and
  • Edwin Rivas-Trujillo

5 May 2020

This paper deals with the problem of optimal location and reallocation of battery energy storage systems (BESS) in direct current (dc) microgrids with constant power loads. The optimization model that represents this problem is formulated with two ob...

  • Article
  • Open Access
7 Citations
10,597 Views
31 Pages

A Step-by-Step Solution Methodology for Mathematical Expressions

  • Sahereh Hosseinpour,
  • Mir Mohammad Reza Alavi Milani and
  • Hüseyin Pehlivan

15 July 2018

In this paper, we propose a methodology for the step-by-step solution of problems, which can be incorporated into a computer algebra system. Our main aim is to show all the intermediate evaluation steps of mathematical expressions from the start to t...

  • Article
  • Open Access
1,471 Views
6 Pages

1 August 2012

This paper begins with the introduction of biquaternion algebra and its properties in compact, profound and comprehensible approach. The Schrödinger equation including both the scalar Aharonov-Bohm(sAB) and Aharonov-Casher(AC) effects, that are curre...

  • Article
  • Open Access
5 Citations
2,933 Views
14 Pages

On the Digital Pontryagin Algebras

  • Sunyoung Lee,
  • Yeonjeong Kim,
  • Jeong-Eun Lim and
  • Dae-Woong Lee

26 May 2020

In the current study, we explore digital homology modules, and investigate their fundamental properties on (pointed) digital images as one of the developments of symmetries. We also examine pointed digital Hopf spaces and base point preserving digita...

  • Article
  • Open Access
10 Citations
2,485 Views
28 Pages

Symmetries and Covariant Poisson Brackets on Presymplectic Manifolds

  • Florio M. Ciaglia,
  • Fabio Di Cosmo,
  • Alberto Ibort,
  • Giuseppe Marmo,
  • Luca Schiavone and
  • Alessandro Zampini

4 January 2022

As the space of solutions of the first-order Hamiltonian field theory has a presymplectic structure, we describe a class of conserved charges associated with the momentum map, determined by a symmetry group of transformations. A gauge theory is dealt...

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