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Effects of B-D Functional Response and Protection Zone on a Predator-prey Model B-D功能反应和保护区对捕食-食饵模型的影响
IF 0.4 4区 数学
Taiwanese Journal of Mathematics Pub Date : 2023-01-01 DOI: 10.11650/tjm/230501
Yu-Xia Wang, Shouwen Fan
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引用次数: 0
Distance Laplacian Spectral Radius of the Complements of Trees and Unicyclic Graphs 树与单环图补的距离拉普拉斯谱半径
4区 数学
Taiwanese Journal of Mathematics Pub Date : 2023-01-01 DOI: 10.11650/tjm/231002
Kang Liu, Dan Li, Yuanyuan Chen
{"title":"Distance Laplacian Spectral Radius of the Complements of Trees and Unicyclic Graphs","authors":"Kang Liu, Dan Li, Yuanyuan Chen","doi":"10.11650/tjm/231002","DOIUrl":"https://doi.org/10.11650/tjm/231002","url":null,"abstract":"Let $G$ be a connected graph and $D^{L}(G) = operatorname{Tr}(G) - D(G)$ be the distance Laplacian matrix of $G$, where $operatorname{Tr}(G)$ and $D(G)$ are diagonal matrix with vertex transmissions of $G$ and distance matrix of $G$, respectively. The $D^{L}$-spectral radius of $G$ is defined as the largest absolute value of the distance Laplacian eigenvalues of $G$. In this paper, we characterize the unique extremal graphs which maximize the $D^{L}$-spectral radius among the complements of trees and unicyclic graphs, respectively.","PeriodicalId":22176,"journal":{"name":"Taiwanese Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136366379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Complex Ball Quotients and New Symplectic $4$-manifolds with Nonnegative Signatures 复球商与非负签名的新辛$4$流形
4区 数学
Taiwanese Journal of Mathematics Pub Date : 2023-01-01 DOI: 10.11650/tjm/230905
Anar Akhmedov, Sümeyra Sakallı, Sai-Kee Yeung
{"title":"Complex Ball Quotients and New Symplectic $4$-manifolds with Nonnegative Signatures","authors":"Anar Akhmedov, Sümeyra Sakallı, Sai-Kee Yeung","doi":"10.11650/tjm/230905","DOIUrl":"https://doi.org/10.11650/tjm/230905","url":null,"abstract":"We construct new symplectic $4$-manifolds with non-negative signatures and with the smallest Euler characteristics, using fake projective planes, Cartwright–Steger surfaces and their normal covers and product symplectic $4$-manifolds $Sigma_{g} times Sigma_{h}$, where $g geq 1$ and $h geq 0$, along with exotic symplectic $4$-manifolds constructed in [7, 12]. In particular, our constructions yield to (1) infinitely many irreducible symplectic and infinitely many non-symplectic $4$-manifolds that are homeomorphic but not diffeomorphic to $(2n-1) mathbb{CP}^{2} # (2n-1) overline{mathbb{CP}}^{2}$ for each integer $n geq 9$, (2) infinite families of simply connected irreducible nonspin symplectic and such infinite families of non-symplectic $4$-manifolds that have the smallest Euler characteristics among the all known simply connected $4$-manifolds with positive signatures and with more than one smooth structure. We also construct a complex surface with positive signature from the Hirzebruch's line-arrangement surfaces, which is a ball quotient.","PeriodicalId":22176,"journal":{"name":"Taiwanese Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135783920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
An Implicit Discontinuous Galerkin Scheme for Solving the Cardiovascular Drug-eluting Stents' Model 求解心血管药物洗脱支架模型的隐式不连续伽辽金格式
IF 0.4 4区 数学
Taiwanese Journal of Mathematics Pub Date : 2023-01-01 DOI: 10.11650/tjm/230402
Somayeh Fakhri, S. H. Momeni-Masuleh
{"title":"An Implicit Discontinuous Galerkin Scheme for Solving the Cardiovascular Drug-eluting Stents' Model","authors":"Somayeh Fakhri, S. H. Momeni-Masuleh","doi":"10.11650/tjm/230402","DOIUrl":"https://doi.org/10.11650/tjm/230402","url":null,"abstract":"","PeriodicalId":22176,"journal":{"name":"Taiwanese Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43620283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Filter Regularization Method for Inverse Source Problem of the Rayleigh–Stokes Equation Rayleigh–Stokes方程反源问题的滤波正则化方法
IF 0.4 4区 数学
Taiwanese Journal of Mathematics Pub Date : 2023-01-01 DOI: 10.11650/tjm/230302
Songshu Liu
{"title":"Filter Regularization Method for Inverse Source Problem of the Rayleigh–Stokes Equation","authors":"Songshu Liu","doi":"10.11650/tjm/230302","DOIUrl":"https://doi.org/10.11650/tjm/230302","url":null,"abstract":"","PeriodicalId":22176,"journal":{"name":"Taiwanese Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45908743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Stability of a Linear Cauchy Rao–Nakra Sandwich Beam Under Frictional Dampings 摩擦阻尼作用下线性Cauchy Rao-Nakra夹层梁的稳定性
IF 0.4 4区 数学
Taiwanese Journal of Mathematics Pub Date : 2023-01-01 DOI: 10.11650/tjm/230502
A. Guesmia
{"title":"On the Stability of a Linear Cauchy Rao–Nakra Sandwich Beam Under Frictional Dampings","authors":"A. Guesmia","doi":"10.11650/tjm/230502","DOIUrl":"https://doi.org/10.11650/tjm/230502","url":null,"abstract":"","PeriodicalId":22176,"journal":{"name":"Taiwanese Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43078106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Smallest $2$-Pisot Numbers in $mathbb{F}_{q}((X^{-1}))$ Where $q$ is Different from the Power of $2$ $mathbb{F}_{q}((X^{-1}))$中最小的$2$-位数，其中$q$不同于$2$的幂
IF 0.4 4区 数学
Taiwanese Journal of Mathematics Pub Date : 2023-01-01 DOI: 10.11650/tjm/230601
H. Kthiri
{"title":"The Smallest $2$-Pisot Numbers in $mathbb{F}_{q}((X^{-1}))$ Where $q$ is Different from the Power of $2$","authors":"H. Kthiri","doi":"10.11650/tjm/230601","DOIUrl":"https://doi.org/10.11650/tjm/230601","url":null,"abstract":"","PeriodicalId":22176,"journal":{"name":"Taiwanese Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46671856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structure of Rings Whose Potent Elements are Central 有效元素位于中心的环的结构
4区 数学
Taiwanese Journal of Mathematics Pub Date : 2023-01-01 DOI: 10.11650/tjm/231103
Tai Keun Kwak, Yang Lee, Yeonsook Seo
{"title":"Structure of Rings Whose Potent Elements are Central","authors":"Tai Keun Kwak, Yang Lee, Yeonsook Seo","doi":"10.11650/tjm/231103","DOIUrl":"https://doi.org/10.11650/tjm/231103","url":null,"abstract":"We study the structure of potent elements in matrix rings with same diagonals and polynomial rings, motivated by Jacobson's theorem of commutativity. A ring shall be said to be PC if every potent element is central. We investigate the structure of PC rings in relation to the commutativity of rings. It is proved that if $R$ is a PC ring of prime characteristic then the polynomial ring over $R$ is also a PC ring. Every periodic PC ring is shown to be commutative.","PeriodicalId":22176,"journal":{"name":"Taiwanese Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135668202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Maximal Number of Maximum Dissociation Sets in Forests with Fixed Order and Dissociation Number 定序解离数森林中最大解离集的最大个数
IF 0.4 4区 数学
Taiwanese Journal of Mathematics Pub Date : 2023-01-01 DOI: 10.11650/tjm/230204
Wanting Sun, Shuchao Li
{"title":"On the Maximal Number of Maximum Dissociation Sets in Forests with Fixed Order and Dissociation Number","authors":"Wanting Sun, Shuchao Li","doi":"10.11650/tjm/230204","DOIUrl":"https://doi.org/10.11650/tjm/230204","url":null,"abstract":"","PeriodicalId":22176,"journal":{"name":"Taiwanese Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47799614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Ventcel-type Transmission Conditions for the Scattering of a Time-harmonic Wave Problem with Accuracy up to Order $3$ 精度达3阶时谐波散射的腔室型传输条件
IF 0.4 4区 数学
Taiwanese Journal of Mathematics Pub Date : 2023-01-01 DOI: 10.11650/tjm/230201
K. E. Boutarene, Sami Galleze
{"title":"Ventcel-type Transmission Conditions for the Scattering of a Time-harmonic Wave Problem with Accuracy up to Order $3$","authors":"K. E. Boutarene, Sami Galleze","doi":"10.11650/tjm/230201","DOIUrl":"https://doi.org/10.11650/tjm/230201","url":null,"abstract":"","PeriodicalId":22176,"journal":{"name":"Taiwanese Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46532944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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