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Counting formulas and bijections of nondecreasing 2-noncrossing trees 非递减 2 非交叉树的计数公式和偏射
Electronic Journal of Mathematics Pub Date : 2024-07-02 DOI: 10.47443/ejm.2024.029
Yvonne Wakuthii Kariuki, I. Okoth, F. Nyamwala
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引用次数: 0
Proper total domination in graphs 图形中适当的全面支配
Electronic Journal of Mathematics Pub Date : 2024-05-20 DOI: 10.47443/ejm.2024.024
Ritabrato Chatterjee, Emma Jent, Sawyer Osborn, Ping Zhang
{"title":"Proper total domination in graphs","authors":"Ritabrato Chatterjee, Emma Jent, Sawyer Osborn, Ping Zhang","doi":"10.47443/ejm.2024.024","DOIUrl":"https://doi.org/10.47443/ejm.2024.024","url":null,"abstract":"","PeriodicalId":503196,"journal":{"name":"Electronic Journal of Mathematics","volume":"68 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141123386","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 level energy and level characteristic polynomial of rooted trees 论有根树的水平能量和水平特征多项式
Electronic Journal of Mathematics Pub Date : 2024-05-01 DOI: 10.47443/ejm.2024.020
Audace A. V. Dossou-Olory, Muhammed F. Killik, Elena V. Konstantinova, Bünyamin Șahin
{"title":"On level energy and level characteristic polynomial of rooted trees","authors":"Audace A. V. Dossou-Olory, Muhammed F. Killik, Elena V. Konstantinova, Bünyamin Șahin","doi":"10.47443/ejm.2024.020","DOIUrl":"https://doi.org/10.47443/ejm.2024.020","url":null,"abstract":"","PeriodicalId":503196,"journal":{"name":"Electronic Journal of Mathematics","volume":"50 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141030439","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
Berezin radius type inequalities for functional Hilbert space operators 函数式希尔伯特空间算子的贝雷津半径型不等式
Electronic Journal of Mathematics Pub Date : 2024-05-01 DOI: 10.47443/ejm.2024.017
Vuk Stojiljković, M. Gürdal
{"title":"Berezin radius type inequalities for functional Hilbert space operators","authors":"Vuk Stojiljković, M. Gürdal","doi":"10.47443/ejm.2024.017","DOIUrl":"https://doi.org/10.47443/ejm.2024.017","url":null,"abstract":"","PeriodicalId":503196,"journal":{"name":"Electronic Journal of Mathematics","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141025613","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
Elliptic Sombor index of trees and unicyclic graphs 树和单环图的椭圆松博指数
Electronic Journal of Mathematics Pub Date : 2024-03-18 DOI: 10.47443/ejm.2024.009
Zikai Tang, Yunping Li, Hanyuan Deng
{"title":"Elliptic Sombor index of trees and unicyclic graphs","authors":"Zikai Tang, Yunping Li, Hanyuan Deng","doi":"10.47443/ejm.2024.009","DOIUrl":"https://doi.org/10.47443/ejm.2024.009","url":null,"abstract":"","PeriodicalId":503196,"journal":{"name":"Electronic Journal of Mathematics","volume":"23 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140232823","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 a conjecture of Chellali and Favaron regarding connected domination numbers 论切拉利和法瓦隆关于连通支配数的猜想
Electronic Journal of Mathematics Pub Date : 2024-03-11 DOI: 10.47443/ejm.2023.040
Phillip Mafuta
{"title":"On a conjecture of Chellali and Favaron regarding connected domination numbers","authors":"Phillip Mafuta","doi":"10.47443/ejm.2023.040","DOIUrl":"https://doi.org/10.47443/ejm.2023.040","url":null,"abstract":"","PeriodicalId":503196,"journal":{"name":"Electronic Journal of Mathematics","volume":"19 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140253623","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
Braided monoidal categories of coalgebras 煤球的编单范畴
Electronic Journal of Mathematics Pub Date : 2023-12-15 DOI: 10.47443/ejm.2023.046
Jean-Paul Mavoungou
{"title":"Braided monoidal categories of coalgebras","authors":"Jean-Paul Mavoungou","doi":"10.47443/ejm.2023.046","DOIUrl":"https://doi.org/10.47443/ejm.2023.046","url":null,"abstract":"Let V be a braided monoidal category. Given a braided monoidal endofunctor F on V , it is proved that F -coalgebras form a braided monoidal category, denoted as V F . Particularly, if the category V admits coproducts and if F is a fully faithful symmetric monoidal endofunctor, then it is proved that V F is symmetric monoidal closed whenever V is symmetric monoidal closed.","PeriodicalId":503196,"journal":{"name":"Electronic Journal of Mathematics","volume":"388 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139177838","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
General Zagreb indices of composite graphs 复合图形的一般萨格勒布指数
Electronic Journal of Mathematics Pub Date : 2023-12-15 DOI: 10.47443/ejm.2023.048
Ahmed Ayache, Ivan Gutman, A. Alameri, Abdullatif Ghallab
{"title":"General Zagreb indices of composite graphs","authors":"Ahmed Ayache, Ivan Gutman, A. Alameri, Abdullatif Ghallab","doi":"10.47443/ejm.2023.048","DOIUrl":"https://doi.org/10.47443/ejm.2023.048","url":null,"abstract":"The first and second general Zagreb indices, M α 1 and M α 2 , are the sum of the terms δ ( u ) α + δ ( v ) α and δ ( u ) α · δ ( v ) α , respectively, over all pairs of adjacent vertices u, v of a graph, where δ ( x ) is the degree of the vertex x , and α is a real number. For α = 1 , M α 1 and M α 2 are equal to the ordinary first and second Zagreb indices. For some other values of α , M α 1 and M α 2 reduce to a variety of other, earlier considered, topological indices. In this paper, we establish expressions for M α 1 and M α 2 for several types of composite graphs, and give examples pointing at possible applications of these expressions.","PeriodicalId":503196,"journal":{"name":"Electronic Journal of Mathematics","volume":"47 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139178793","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
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