发布求助
文献互助 智能选刊 最新文献

Open Journal of Discrete Applied Mathematics最新文献

筛选
英文 中文
General Zagreb index of some cactus chains 一些仙人掌链的一般萨格勒布指数
Open Journal of Discrete Applied Mathematics Pub Date : 2019-12-31 DOI: 10.30538/PSRP-ODAM2019.0008
Nilanjan De
{"title":"General Zagreb index of some cactus chains","authors":"Nilanjan De","doi":"10.30538/PSRP-ODAM2019.0008","DOIUrl":"https://doi.org/10.30538/PSRP-ODAM2019.0008","url":null,"abstract":"Abstract: The mathematical chemistry deals with applications of graph theory to study the physicochemical properties of molecules theoretically. A chemical graph is a simple graph where hydrogen depleted atoms are vertices and covalent bonds between them represent the edges. A topological index of a graph is a numeric quantity obtained from the graph mathematically. A cactus graph is a connected graph in which no edges lie in more than one cycle. In this study, we derive exact expressions of general Zagreb index of some cactus chains.","PeriodicalId":438929,"journal":{"name":"Open Journal of Discrete Applied Mathematics","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115800236","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: 5
Minimum degree polynomial of graphs obtained by some graph operators 由图算子得到的图的最小次多项式
Open Journal of Discrete Applied Mathematics Pub Date : 2019-12-31 DOI: 10.30538/PSRP-ODAM2019.0011
B. Basavanagoud, Praveen Jakkannavar
{"title":"Minimum degree polynomial of graphs obtained by some graph operators","authors":"B. Basavanagoud, Praveen Jakkannavar","doi":"10.30538/PSRP-ODAM2019.0011","DOIUrl":"https://doi.org/10.30538/PSRP-ODAM2019.0011","url":null,"abstract":"Abstract: The minimum degree matrix MD(G) of a graph G of order n is an n× n symmetric matrix whose (i, j)th entry is min{di, dj} whenever i 6= j, and zero otherwise, where di and dj are the degrees of the ith and jth vertices of G, respectively. In the present work, we obtain the minimum degree polynomial of the graphs obtained by some graph operators (generalized xyz-point-line transformation graphs).","PeriodicalId":438929,"journal":{"name":"Open Journal of Discrete Applied Mathematics","volume":"230 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120959145","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 outer-connected vertex edge domination number in Lexicographic product graphs 字典积图中的外连通顶点边支配数
Open Journal of Discrete Applied Mathematics Pub Date : 2019-12-31 DOI: 10.30538/PSRP-ODAM2019.0012
O. Oyewumi, A. Akwu, Obakpo Johnson Ben
{"title":"The outer-connected vertex edge domination number in Lexicographic product graphs","authors":"O. Oyewumi, A. Akwu, Obakpo Johnson Ben","doi":"10.30538/PSRP-ODAM2019.0012","DOIUrl":"https://doi.org/10.30538/PSRP-ODAM2019.0012","url":null,"abstract":"An outer-connected vertex edge dominating set (OCVEDS) for an arbitrary graph G is a set D ⊂ V(G) such that D is a vertex edge dominating set and the graph G D is connected. The outer-connected vertex edge domination number of G is the cardinality of a minimum OCVEDS of G, denoted by γoc ve(G). In this paper, we give the outer-connected vertex edge dominating set in lexicographic product of graphs.","PeriodicalId":438929,"journal":{"name":"Open Journal of Discrete Applied Mathematics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129526557","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: 1
Some properties of the solutions of the difference equation (x_{n+1}=a x_{n}+dfrac{b x_{n} x_{n-4}}{c x_{n-3}+dx_{n-4}}) 差分方程解的一些性质 (x_{n+1}=a x_{n}+dfrac{b x_{n} x_{n-4}}{c x_{n-3}+dx_{n-4}})
Open Journal of Discrete Applied Mathematics Pub Date : 2019-12-31 DOI: 10.30538/PSRP-ODAM2019.0014
Abdualrazaq Sanbo, E. Elsayed, Tvtc B.P. Jeddah Saudi Arabia Electronics
{"title":"Some properties of the solutions of the difference equation (x_{n+1}=a x_{n}+dfrac{b x_{n} x_{n-4}}{c x_{n-3}+dx_{n-4}})","authors":"Abdualrazaq Sanbo, E. Elsayed, Tvtc B.P. Jeddah Saudi Arabia Electronics","doi":"10.30538/PSRP-ODAM2019.0014","DOIUrl":"https://doi.org/10.30538/PSRP-ODAM2019.0014","url":null,"abstract":"","PeriodicalId":438929,"journal":{"name":"Open Journal of Discrete Applied Mathematics","volume":"162 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122763153","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: 1
Bounds on the covering radius of some classes of codes over R 若干码类在R上的覆盖半径的界
Open Journal of Discrete Applied Mathematics Pub Date : 2019-12-31 DOI: 10.30538/PSRP-ODAM2019.0007
P. C. Pandian
{"title":"Bounds on the covering radius of some classes of codes over R","authors":"P. C. Pandian","doi":"10.30538/PSRP-ODAM2019.0007","DOIUrl":"https://doi.org/10.30538/PSRP-ODAM2019.0007","url":null,"abstract":"In this paper, the covering radius of codes over R = Z2R∗, where R∗ = Z2 + vZ2, v2 = v with different weight are discussed. The block repetition codes over R is defined and the covering radius for block repetition codes, simplex code of α-type and β-type in R are obtained.","PeriodicalId":438929,"journal":{"name":"Open Journal of Discrete Applied Mathematics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133075038","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: 1
Analysis of the qualitative behaviour of an eighth-order fractional difference equation 八阶分数阶差分方程定性性质的分析
Open Journal of Discrete Applied Mathematics Pub Date : 2019-12-31 DOI: 10.30538/PSRP-ODAM2019.0010
M. Almatrafi, M. M. Alzubaidi
{"title":"Analysis of the qualitative behaviour of an eighth-order fractional difference equation","authors":"M. Almatrafi, M. M. Alzubaidi","doi":"10.30538/PSRP-ODAM2019.0010","DOIUrl":"https://doi.org/10.30538/PSRP-ODAM2019.0010","url":null,"abstract":"Abstract: The exact solutions of most nonlinear difference equations cannot be obtained theoretically sometimes. Therefore, a massive number of researchers predict the long behaviour of most difference equations by investigating some qualitative behaviours of these equations from the governing equations. In this article, we aim to analyze the asymptotic stability, global stability, periodicity of the solution of an eighth-order difference equation. Moreover, a theoretical solution of a special case equation will be presented in this paper.","PeriodicalId":438929,"journal":{"name":"Open Journal of Discrete Applied Mathematics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129479376","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: 9
On further results of hex derived networks 关于十六进制网络的进一步结果
Open Journal of Discrete Applied Mathematics Pub Date : 2019-12-31 DOI: 10.30538/PSRP-ODAM2019.0009
Haidar Ali, Ammara Sajjad
{"title":"On further results of hex derived networks","authors":"Haidar Ali, Ammara Sajjad","doi":"10.30538/PSRP-ODAM2019.0009","DOIUrl":"https://doi.org/10.30538/PSRP-ODAM2019.0009","url":null,"abstract":"Topological indices are real numbers associated with molecular graphs of compounds that help to guess properties of compounds. Hex-Derived networks has an assortment of valuable applications in drug store, hardware, and systems administration. Imran et al. [1] computed the general Randić, first Zagreb, ABC, GA, ABC4, and GA5 indices for these hex-derived networks. In this article, we extend the work of [1] and compute some new topological indices of these networks.","PeriodicalId":438929,"journal":{"name":"Open Journal of Discrete Applied Mathematics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114069345","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: 16
The number of extended irreducible binary Goppa codes of degree (2ℓ)m and length 2n+1 度为(2l)m，长度为2n+1的扩展不可约二进制Goppa码的个数
Open Journal of Discrete Applied Mathematics Pub Date : 2019-12-31 DOI: 10.30538/PSRP-ODAM2019.0006
A. Musukwa, Mzuzu Malawi.. Bag
{"title":"The number of extended irreducible binary Goppa codes of degree (2ℓ)m and length 2n+1","authors":"A. Musukwa, Mzuzu Malawi.. Bag","doi":"10.30538/PSRP-ODAM2019.0006","DOIUrl":"https://doi.org/10.30538/PSRP-ODAM2019.0006","url":null,"abstract":"","PeriodicalId":438929,"journal":{"name":"Open Journal of Discrete Applied Mathematics","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116909861","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
A note on the Kirchhoff index of graphs 关于图的基尔霍夫索引的注解
Open Journal of Discrete Applied Mathematics Pub Date : 2019-12-31 DOI: 10.30538/psrp-odam2019.0017
M. Matejic, E. Milovanovic, P. Milošević, I. Milovanovic
{"title":"A note on the Kirchhoff index of graphs","authors":"M. Matejic, E. Milovanovic, P. Milošević, I. Milovanovic","doi":"10.30538/psrp-odam2019.0017","DOIUrl":"https://doi.org/10.30538/psrp-odam2019.0017","url":null,"abstract":"Let G be a simple connected graph with n vertices, m edges, and a sequence of vertex degrees ∆ = d1 ≥ d2 ≥ · · · ≥ dn = δ > 0. Denote by μ1 ≥ μ2 ≥ · · · ≥ μn−1 > μn = 0 the Laplacian eigenvalues of G. The Kirchhoff index of G is defined as K f (G) = n ∑n−1 i=1 1 μi . A couple of new lower bounds for K f (G) that depend on n, m, ∆ and some other graph invariants are obtained.","PeriodicalId":438929,"journal":{"name":"Open Journal of Discrete Applied Mathematics","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134143713","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
On edge-prime cubic graphs with small components 小分量边素数三次图
Open Journal of Discrete Applied Mathematics Pub Date : 2019-12-31 DOI: 10.30538/PSRP-ODAM2019.0015
G. Lau, Sin-Min Lee, W. Shiu, North First Avenue Upland Ca Usa
{"title":"On edge-prime cubic graphs with small components","authors":"G. Lau, Sin-Min Lee, W. Shiu, North First Avenue Upland Ca Usa","doi":"10.30538/PSRP-ODAM2019.0015","DOIUrl":"https://doi.org/10.30538/PSRP-ODAM2019.0015","url":null,"abstract":"Gee-Choon Lau1,∗, Sin-Min Lee2 and Wai Chee Shiu3,4 1 Faculty of Computer & Mathematical Sciences, Universiti Teknologi MARA (Segamat Campus), 85000 Johor, Malaysia. 2 1304, North First Avenue, Upland, CA 91786 USA.; sinminlee@gmail.com 3 Department of Mathematics, The Chinese University of Hong Kong, Shatin, Hong Kong.; shiu1958@gmail.com 4 College of Global Talents, Beijing Institute of Technology, Zhuhai, China. * Correspondence: geeclau@yahoo.com","PeriodicalId":438929,"journal":{"name":"Open Journal of Discrete Applied Mathematics","volume":"101 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120972815","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: 1
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书