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Communications in Algebra最新文献

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Sharp permutation groups whose point stabilizers are Frobenius groups with cyclic Frobenius kernel 其点稳定子为具有循环弗罗贝尼斯核的弗罗贝尼斯群的尖顶置换群
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-08-06 DOI: 10.1080/00927872.2024.2377806
Blake Norman
{"title":"Sharp permutation groups whose point stabilizers are Frobenius groups with cyclic Frobenius kernel","authors":"Blake Norman","doi":"10.1080/00927872.2024.2377806","DOIUrl":"https://doi.org/10.1080/00927872.2024.2377806","url":null,"abstract":"Let (G,X) be a transitive non-geometric sharp permutation group of type {0,k} and let x∈X. We prove that if the point stabilizer Gx is a Frobenius group with cyclic Frobenius kernel, then Gx≅AGL(1,...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
A combinatorial model for q-characters of fundamental modules of type Dn Dn 型基本模块 q 字符的组合模型
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-08-06 DOI: 10.1080/00927872.2024.2379491
Jun Tong, Bing Duan, Yanfeng Luo
{"title":"A combinatorial model for q-characters of fundamental modules of type Dn","authors":"Jun Tong, Bing Duan, Yanfeng Luo","doi":"10.1080/00927872.2024.2379491","DOIUrl":"https://doi.org/10.1080/00927872.2024.2379491","url":null,"abstract":"In this paper, we introduce a combinatorial path model of representation of the quantum affine algebra of type Dn, inspired by Mukhin and Young’s combinatorial path models of representations of the...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Tjurina number of a local complete intersection curve 局部完全相交曲线的 Tjurina 数
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-08-06 DOI: 10.1080/00927872.2024.2381823
Valmecir Antonio dos Santos Bayer, Edison Marcavillaca Niño de Guzmán, Abramo Hefez, Marcelo Escudeiro Hernandes
{"title":"Tjurina number of a local complete intersection curve","authors":"Valmecir Antonio dos Santos Bayer, Edison Marcavillaca Niño de Guzmán, Abramo Hefez, Marcelo Escudeiro Hernandes","doi":"10.1080/00927872.2024.2381823","DOIUrl":"https://doi.org/10.1080/00927872.2024.2381823","url":null,"abstract":"In contrast to the Milnor number, there was no known formula relating the Tjurina number of a reducible curve to the Tjurina numbers of its components. In this work we exhibit such a formula relati...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Simple derivations in two variables 两个变量的简单推导
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-08-05 DOI: 10.1080/00927872.2024.2381827
Pankaj Shukla, Anand Parkash
{"title":"Simple derivations in two variables","authors":"Pankaj Shukla, Anand Parkash","doi":"10.1080/00927872.2024.2381827","DOIUrl":"https://doi.org/10.1080/00927872.2024.2381827","url":null,"abstract":"Let k be a field of characteristic zero. If c1,c2∈k∖{0},s,t≥1 and u≥0, then it is shown that the k-derivations ∂x+xu(c1xtys+c2)∂y and ∂x+xu(c1xt+c2ys+1)∂y of k[x, y] are simple. We also give a nece...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Derivations and biderivations of the non-square linear Lie algebra gl(m×n, 𝔽) 非平方线性李代数 gl(m×n, 𝔽) 的派生和双派生
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-08-05 DOI: 10.1080/00927872.2024.2381814
Hongjin Liu, Zhengxin Chen
{"title":"Derivations and biderivations of the non-square linear Lie algebra gl(m×n, 𝔽)","authors":"Hongjin Liu, Zhengxin Chen","doi":"10.1080/00927872.2024.2381814","DOIUrl":"https://doi.org/10.1080/00927872.2024.2381814","url":null,"abstract":"Let m, n be integers with m>n . Denote Mm,n by the set of all m×n matrices over the field F of characteristic zero. Let I be an n×m matrix with (i,i) -position 1 for any 1≤i≤n , and 0 in other ...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Galois skew lines of smooth surfaces in P3 P3 中光滑曲面的伽罗瓦斜线
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-08-05 DOI: 10.1080/00927872.2024.2378223
Taro Hayashi
{"title":"Galois skew lines of smooth surfaces in P3","authors":"Taro Hayashi","doi":"10.1080/00927872.2024.2378223","DOIUrl":"https://doi.org/10.1080/00927872.2024.2378223","url":null,"abstract":"It is known that the degree of irrationality irr(X) of a smooth surface X of degree d≥5 in P3 is at least d – 2. In this paper, we study a Galois rational map f:X−−→P2 of degree d – 2, and we show ...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Factorization in rings of integer-valued rational functions 整值有理函数环中的因式分解
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-08-05 DOI: 10.1080/00927872.2024.2377811
Baian Liu
{"title":"Factorization in rings of integer-valued rational functions","authors":"Baian Liu","doi":"10.1080/00927872.2024.2377811","DOIUrl":"https://doi.org/10.1080/00927872.2024.2377811","url":null,"abstract":"For a domain D, the ring Int(D) of integer-valued polynomials over D is atomic if D satisfies the ascending chain condition on principal ideals. However, even for a discrete valuation domain V, the...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Odd-order groups with small average number of zeros of characters 字符平均零数较少的奇数阶组
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-08-05 DOI: 10.1080/00927872.2024.2382813
Dongfang Yang, Yu Zeng
{"title":"Odd-order groups with small average number of zeros of characters","authors":"Dongfang Yang, Yu Zeng","doi":"10.1080/00927872.2024.2382813","DOIUrl":"https://doi.org/10.1080/00927872.2024.2382813","url":null,"abstract":"We define, and denote by anz(G), the average number of zeros of characters of a finite group G as the number of zeros in the character table of G dividing the number of irreducible characters of G....","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Bounds on injective dimension and exceptional complete intersection maps 注入维度和特殊完全交集映射的界限
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-08-02 DOI: 10.1080/00927872.2024.2381825
Hossein Faridian
{"title":"Bounds on injective dimension and exceptional complete intersection maps","authors":"Hossein Faridian","doi":"10.1080/00927872.2024.2381825","DOIUrl":"https://doi.org/10.1080/00927872.2024.2381825","url":null,"abstract":"We prove that if f:R→S is a local homomorphism of noetherian local rings, and M is a non-zero finitely generated or artinian S-module whose injective dimension over R is bounded by the difference ...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 relation of character codegrees and the minimal faithful quasi-permutation representation degree of p-groups 论字符编码度与 p 群最小忠实准畸变表示度的关系
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-08-02 DOI: 10.1080/00927872.2024.2379488
Sunil Kumar Prajapati, Ayush Udeep
{"title":"On the relation of character codegrees and the minimal faithful quasi-permutation representation degree of p-groups","authors":"Sunil Kumar Prajapati, Ayush Udeep","doi":"10.1080/00927872.2024.2379488","DOIUrl":"https://doi.org/10.1080/00927872.2024.2379488","url":null,"abstract":"For a finite group G, we denote by c(G) , the minimal degree of a faithful representation of G by quasi-permutation matrices over C . For an irreducible character χ of G, the codegree of χ is def...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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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