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Afrika Matematika最新文献

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On direct sums and quotient spaces of near-vector spaces 论近矢量空间的直接和与商空间
IF 1.1 Q2 Mathematics
Afrika Matematika
Pub Date : 2024-02-13 DOI: 10.1007/s13370-024-01168-7
K. -. Howell, P. Cara, L. Wessels
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引用次数: 0
On direct sums and quotient spaces of near-vector spaces 论近矢量空间的直接和与商空间
IF 1.1 Q2 Mathematics
Afrika Matematika
Pub Date : 2024-02-13 DOI: 10.1007/s13370-024-01168-7
K. -. Howell, P. Cara, L. Wessels
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引用次数: 0
Invariant approximation in 2-banach space with $$H^{+}$$ H + mappings 带有 $$H^{+}$ H + 映射的 2-巴拿赫空间中的不变逼近
IF 1.1 Q2 Mathematics
Afrika Matematika
Pub Date : 2024-02-09 DOI: 10.1007/s13370-024-01169-6
M. Pitchaimani, K. Saravanan
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引用次数: 0
Invariant approximation in 2-banach space with $$H^{+}$$ H + mappings 带有 $$H^{+}$ H + 映射的 2-巴拿赫空间中的不变逼近
IF 1.1 Q2 Mathematics
Afrika Matematika
Pub Date : 2024-02-09 DOI: 10.1007/s13370-024-01169-6
M. Pitchaimani, K. Saravanan
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引用次数: 0
A study of bi-bases of ternary semigroups 三元半群的双基研究
IF 1.1 Q2 Mathematics
Afrika Matematika
Pub Date : 2024-01-30 DOI: 10.1007/s13370-024-01167-8
Akbar Ali, Sabahat A. Khan, Mohammad Yahya Abbasi
{"title":"A study of bi-bases of ternary semigroups","authors":"Akbar Ali, Sabahat A. Khan, Mohammad Yahya Abbasi","doi":"10.1007/s13370-024-01167-8","DOIUrl":"https://doi.org/10.1007/s13370-024-01167-8","url":null,"abstract":"","PeriodicalId":46107,"journal":{"name":"Afrika Matematika","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140481491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Symplectic structure and applications on Weil bundles 魏尔束上的交映结构与应用
IF 1.1 Q2 Mathematics
Afrika Matematika
Pub Date : 2024-01-29 DOI: 10.1007/s13370-024-01166-9
Andre S. E. Mialebama Bouesso, F. Mekiya Moutabanza, Jude R. Bayeni Mitoueni
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引用次数: 0
On first integrals, conservation laws and reduction of classes of Emden and Liénard equations 论第一积分、守恒定律以及埃姆登方程和李纳方程的还原类
IF 1.1 Q2 Mathematics
Afrika Matematika
Pub Date : 2024-01-24 DOI: 10.1007/s13370-023-01163-4
Mogahid M. A. Ahmed, B. Alqurashi, A. H. Kara
{"title":"On first integrals, conservation laws and reduction of classes of Emden and Liénard equations","authors":"Mogahid M. A. Ahmed, B. Alqurashi, A. H. Kara","doi":"10.1007/s13370-023-01163-4","DOIUrl":"https://doi.org/10.1007/s13370-023-01163-4","url":null,"abstract":"","PeriodicalId":46107,"journal":{"name":"Afrika Matematika","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139600666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The L-fuzzy cover spaces and L-fuzzy compact open topology L-模糊覆盖空间和L-模糊紧凑开放拓扑学
IF 1.1 Q2 Mathematics
Afrika Matematika
Pub Date : 2024-01-18 DOI: 10.1007/s13370-023-01158-1
M. Routaray
{"title":"The L-fuzzy cover spaces and L-fuzzy compact open topology","authors":"M. Routaray","doi":"10.1007/s13370-023-01158-1","DOIUrl":"https://doi.org/10.1007/s13370-023-01158-1","url":null,"abstract":"","PeriodicalId":46107,"journal":{"name":"Afrika Matematika","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139526492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stability analysis of anisotropic Bianchi type I cosmological model 各向异性比安奇 I 型宇宙学模型的稳定性分析
IF 1.1 Q2 Mathematics
Afrika Matematika
Pub Date : 2024-01-12 DOI: 10.1007/s13370-023-01162-5
Sreelakshmi Pillai, Sanasam Surendra Singh

Locally Rotationally Symmetric(LRS) Bianchi type I cosmological model interacting with scalar field and exponential potential is presented and phase plane analysis is done in the framework of dynamical systems. Evolution equations are analyzed and reduced to a system of ordinary differential equations which are autonomous by suitable variable transformations. All critical points both hyperbolic and non hyperbolic of the system are listed and their stability properties are analyzed and examined from the cosmological point of view. For non hyperbolic points perturbation theory is applied. Some representations of phase diagrams are shown explicitly.

提出了与标量场和指数势相互作用的局部旋转对称（LRS）比安奇 I 型宇宙学模型，并在动力学系统框架内进行了相平面分析。对演化方程进行了分析，并将其简化为一个常微分方程系统，该系统通过适当的变量变换而自治。列出了系统的所有双曲和非双曲临界点，并从宇宙学的角度分析和研究了它们的稳定性。对于非双曲点，应用了扰动理论。明确显示了相图的一些表现形式。
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引用次数: 0
Hyperbolic functions obtained from ({varvec{k}})-Pell sequences 从 $${varvec{k}}$ k -Pell 序列获得的双曲函数
IF 1.1 Q2 Mathematics
Afrika Matematika
Pub Date : 2024-01-11 DOI: 10.1007/s13370-023-01160-7
Bahar Kuloğlu, Engin Özkan

In this paper, an expansion of the classical hyperbolic functions is presented and studied. Also, many features of the (k-) Pell hyperbolic functions are given. Finally, some graph and curved surfaces related to the k − Pell hyperbolic functions are introduced.

本文提出并研究了经典双曲函数的扩展。此外，还给出了 (k-) Pell 双曲函数的许多特征。最后，介绍了一些与 k - Pell 双曲函数相关的图形和曲面。
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引用次数: 0
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