Reset
Showing 20 of 872 academic articles

On the Gauss Map of Surfaces of Revolution with Lightlike Axis in Minkowski 3-Space

Minghao Jin, Donghe Pei, Shu Xu • Journal of Function Spaces and Applications (2013)

By studying the Gauss map G and Laplace operator Δh of the second fundamental form h, we will classify surfaces of revolution with a lightlike axis in 3-dimensional Minkowski space and also obtain the surface of Enneper of the 2nd kind, the...

DOAJ Open Access (DOAJ) DOI: 10.1155/2013/130495

A Mathematical Introduction to Wavelets

P. Wojtaszczyk • Cambridge University Press eBooks (1997)

This book presents a mathematical introduction to the theory of orthogonal wavelets and their uses in analysing functions and function spaces, both in one and in several variables. Starting with a detailed and self contained discussion of t...

OPENALEX DOI: https://doi.org/10.1017/cbo9780511623790

Multi-step prediction in linearized latent state spaces for representation learning

Andrii Tytarenko • Sistemnì Doslìdženâ ta Informacìjnì Tehnologìï (2022)

In this paper, we derive a novel method as a generalization over LCEs such as E2C. The method develops the idea of learning a locally linear state space by adding a multi-step prediction, thus allowing for more explicit control over the cur...

DOAJ Open Access (DOAJ) DOI: 10.20535/SRIT.2308-8893.2022.3.09

Weight-perception-based fixed and variable admittance control algorithms for unimanual and bimanual lifting of objects with a power assist robotic system

S M Mizanoor Rahman, Ryojun Ikeura • International Journal of Advanced Robotic Systems (2018)

Weight-perception-based fixed admittance control algorithm and variable admittance control algorithm are proposed for unimanual and bimanual lifting of objects with a power assist robotic system. To include weight perception in controls, th...

DOAJ Open Access (DOAJ) DOI: 10.1177/1729881416678131

A quasitopos containing CONV and MET as full subcategories

E. Lowen, R. Lowen • International Journal of Mathematics and Mathematical Sciences (1988)

We show that convergence spaces with continuous maps and metric spaces with contractions, can be viewed as entities of the same kind. Both can be characterized by a “limit function” λ which with each filter ℱ associates a map λℱ from the un...

DOAJ Open Access (DOAJ) DOI: 10.1155/S016117128800050X

Investigating late-time cosmology using Finsler-Randers geometry and Barthel connection: Observational constraints and implications

J. Praveen, S.K. Narasimhamurthy • Nuclear Physics B (2025)

In this study we explore cosmological anisotropies and dark energy using Finsler-Randers geometry, an extension of Riemannian geometry that incorporates directional dependence in the spacetime structure. We investigate whether Finslerian mo...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.nuclphysb.2025.116899

Mathematics

W. T. Gowers • Oxford University Press eBooks (2002)

The aim of Mathematics: A Very Short Introduction is to explain, carefully but not technically, the differences between advanced, research-level mathematics, and the sort of mathematics we learn at school. It offers readers an insight into ...

OPENALEX DOI: https://doi.org/10.1093/actrade/9780192853615.001.0001

Refining the Galerkin method error estimation for parabolic type problem with a boundary condition

Mamatov Alisher, Narjigitov Xusanboy, Turdibayev Dilshod, Rakhmanov Jamshidbek • E3S Web of Conferences (2021)

The article considers a parabolic-type boundary value problem with a divergent principal part, when the boundary condition contains the time derivative of the required function: { ut−d/dxiai(x,t,u,∇u)+a(x,t,u,∇u)=0,a0ut+ai(x,t,u,∇u)cos(v,...

DOAJ Open Access (DOAJ) DOI: 10.1051/e3sconf/202130403019

Mathematical Problems in Engineering

Mirko Viroli D • Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (2017)

Mathematical Problems in Engineering is a peer-reviewed, open access journal that publishes results of rigorous engineering research carried out using mathematical tools. Contributions containing formulations or results related to applicati...

OPENALEX

Cooperation-Based Modeling of Sustainable Development: An Approach from Filippov’s Systems

Jorge A. Amador, Johan Manuel Redondo, Gerard Olivar‐Tost, Christian Erazo • Complexity (2021)

The concept of Sustainable Development has given rise to multiple interpretations. In this article, it is proposed that Sustainable Development should be interpreted as the capacity of territory, community, or landscape to conserve the noti...

DOAJ Open Access (DOAJ) DOI: 10.1155/2021/4249106

Realism, Mathematics and Modality

Hartry H. Field • Philosophical Topics (1988)

Fictionalism, epistemology and modality realism and anti-realism about mathematics is mathematical knowledge just logical knowledge? on conservativeness and incompleteness Platonism for cheap? - Crispin Wright on Frege's context principle c...

OPENALEX DOI: https://doi.org/10.5840/philtopics19881613

Survey of Hybrid Cloud Workflow Scheduling

LIU Peng, LIU Bo, ZHOU Na-qin, PENG Xin-yi, LIN Wei-wei • Jisuanji kexue (2022)

In the context of data explosion,traditional cloud computing is faced with the dilemma of insufficient local cloud resources and high expansion cost.However,the newly emerging hybrid cloud combining resource-rich public cloud and data-sensi...

DOAJ Open Access (DOAJ) DOI: 10.11896/jsjkx.210300303

The application of cosine similarity measures with Laplacian energy to q-rung orthopair fuzzy graphs in decision-making problems

Mohamed Atheeque A., Sharief Basha S., Nune Pratyusha, C. Raghavendra Reddy et al. • AIP Advances (2024)

Q-rung orthopair fuzzy sets (q-ROFS), which are better than the intuitionistic and Pythagorean fuzzy sets, are a significant tool for expressing ambiguous information. Their key feature is that their ability to represent a larger space of u...

DOAJ Open Access (DOAJ) DOI: 10.1063/5.0202907

Representation of Husimi distribution function of coherent state radiation field in non-commutative phase space(相干态辐射场的Husimi 分布函数在非对易相空间中的表示)

WANGXingzhong(王兴忠) • Zhejiang Daxue xuebao. Lixue ban (2019)

介绍了Husimi 分布函数的基本特性及其引入过程和非对易(相) 空间中物理量及物理规律的表述方法。把普通对易空间中的一维相干态辐射场的Husimi 分布函数推广到三维形式,利用Bopp 变换,得到了非对易相空间中的三维相干态辐射场的Husimi 分布函数,并用对易空间中的参数对其进行了描述。...

DOAJ Open Access (DOAJ) DOI: 10.3785/j.issn.1008-9497.2019.06.012

Weak and strong forms of irresolute maps

Miguel Caldas Cueva • International Journal of Mathematics and Mathematical Sciences (2000)

We consider new weak and stronger forms of irresolute and semi-closure via the concept sg-closed sets which we call ap-irresolute maps, ap-semi-closed maps and contra-irresolute and use it to obtain a characterization of semi-T1/2 spaces....

DOAJ Open Access (DOAJ) DOI: 10.1155/S0161171200001502

A Robust and Space-Efficient Stack Management Method for Wireless Sensor Network OS with Scarce Hardware Resources

Seokhwan Kim, Seungku Kim, Doo-Seop Eom • International Journal of Distributed Sensor Networks (2012)

Due to such requirements as low power consumption and low cost, sensor nodes commonly do not include advanced H/W features. The absence of the features such as the memory management unit enforces several tasks to share a memory address doma...

DOAJ Open Access (DOAJ) DOI: 10.1155/2012/962151

The Mathematics of Marriage

John Mordechai Gottman, J. D. Murray, Catherine Swanson, Rebecca C. Tyson et al. • The MIT Press eBooks (2002)

Divorce rates are at an all-time high. But without a theoretical understanding of the processes related to marital stability and dissolution, it is difficult to design and evaluate new marriage interventions. The Mathematics of Marriage pro...

OPENALEX DOI: https://doi.org/10.7551/mitpress/4499.001.0001

Determinantal Sieving

Eduard Eiben, Tomohiro Koana, Magnus Wahlström • TheoretiCS (2025)

We introduce determinantal sieving, a new, remarkably powerful tool in the toolbox of algebraic FPT algorithms. Given a polynomial $P(X)$ on a set of variables $X=\{x_1,\ldots,x_n\}$ and a linear matroid $M=(X,\mathcal{I})$ of rank $k$, bot...

DOAJ Open Access (DOAJ) DOI: 10.46298/theoretics.25.21