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Communications in Algebra最新文献

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When every S-flat module is (flat) projective 当每个 S 平面模块都是（平面）射影时
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-05-09 DOI: 10.1080/00927872.2024.2348126
Driss Bennis, Ayoub Bouziri
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引用次数: 0
The classifying element for quotients of Fermat curves 费马曲线商的分类元素
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-05-06 DOI: 10.1080/00927872.2024.2346299
Juanita Duque-Rosero, Rachel Pries
{"title":"The classifying element for quotients of Fermat curves","authors":"Juanita Duque-Rosero, Rachel Pries","doi":"10.1080/00927872.2024.2346299","DOIUrl":"https://doi.org/10.1080/00927872.2024.2346299","url":null,"abstract":"Suppose C is a cyclic Galois cover of the projective line branched at the three points 0, 1, and ∞ . Under a mild condition on the ramification, we determine the structure of the graded Lie algebra...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":"25 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140941489","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
Massey products in Galois cohomology and Pythagorean fields 伽罗瓦同调与毕达哥拉斯域中的马西积
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-05-06 DOI: 10.1080/00927872.2024.2346637
Claudio Quadrelli
{"title":"Massey products in Galois cohomology and Pythagorean fields","authors":"Claudio Quadrelli","doi":"10.1080/00927872.2024.2346637","DOIUrl":"https://doi.org/10.1080/00927872.2024.2346637","url":null,"abstract":"We prove that a strengthened version of Minač–Tân’s Massey Vanishing Conjecture holds true for fields with a finite number of square classes whose maximal pro-2 Galois group is of elementary type (...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":"89 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141196170","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
Isotropy of quadratic forms over function fields in characteristic 2 特征 2 上函数域二次方形式的同向性
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-05-05 DOI: 10.1080/00927872.2024.2346638
Kristýna Zemková
{"title":"Isotropy of quadratic forms over function fields in characteristic 2","authors":"Kristýna Zemková","doi":"10.1080/00927872.2024.2346638","DOIUrl":"https://doi.org/10.1080/00927872.2024.2346638","url":null,"abstract":"We extend to characteristic two recent results about isotropy of quadratic forms over function fields. In particular, we provide a characterization of function fields not only of quadratic forms bu...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":"50 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141167031","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
Ring homomorphisms and local rings with quasi-decomposable maximal ideal 具有准可分解最大理想的环同态和局部环
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-05-02 DOI: 10.1080/00927872.2024.2345843
Saeed Nasseh, KeriAnn Sather-Wagstaff, Ryo Takahashi
{"title":"Ring homomorphisms and local rings with quasi-decomposable maximal ideal","authors":"Saeed Nasseh, KeriAnn Sather-Wagstaff, Ryo Takahashi","doi":"10.1080/00927872.2024.2345843","DOIUrl":"https://doi.org/10.1080/00927872.2024.2345843","url":null,"abstract":"The notion of local rings with quasi-decomposable maximal ideal was formally introduced by Nasseh and Takahashi. In separate works, the authors of the present paper showed that such rings have rigi...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":"51 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141167029","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
Whittaker vectors in singular Whittaker modules 奇异维特根模块中的维特根向量
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-05-02 DOI: 10.1080/00927872.2024.2345275
Karthik Dulam, Hrishikesh Ghate, Michael Lau, Suyash Pathak
{"title":"Whittaker vectors in singular Whittaker modules","authors":"Karthik Dulam, Hrishikesh Ghate, Michael Lau, Suyash Pathak","doi":"10.1080/00927872.2024.2345275","DOIUrl":"https://doi.org/10.1080/00927872.2024.2345275","url":null,"abstract":"Let g be a complex semisimple Lie algebra with Borel subalgebra b and corresponding nilradical n. We show that singular Whittaker modules M are simple if and only if the space Wh M of Whittaker vec...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":"33 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141167034","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 first and second problems of Hartshorne on cofiniteness 哈特肖恩关于同一性的第一和第二个问题
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-05-02 DOI: 10.1080/00927872.2024.2346300
Kamal Bahmanpour
{"title":"On the first and second problems of Hartshorne on cofiniteness","authors":"Kamal Bahmanpour","doi":"10.1080/00927872.2024.2346300","DOIUrl":"https://doi.org/10.1080/00927872.2024.2346300","url":null,"abstract":"Let a be an ideal of a given commutative Noetherian ring R which satisfies the condition of the first problem of R. Hartshorne in [Affine duality and cofiniteness, Invent. Math. 9 (1970), 145–164]....","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":"67 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140941487","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
Line multiview ideals 线条多视图理想
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-04-30 DOI: 10.1080/00927872.2024.2343762
Paul Breiding, Timothy Duff, Lukas Gustafsson, Felix Rydell, Elima Shehu
{"title":"Line multiview ideals","authors":"Paul Breiding, Timothy Duff, Lukas Gustafsson, Felix Rydell, Elima Shehu","doi":"10.1080/00927872.2024.2343762","DOIUrl":"https://doi.org/10.1080/00927872.2024.2343762","url":null,"abstract":"We study the following problem in computer vision from the perspective of algebraic geometry: Using m pinhole cameras we take m pictures of a line in P3 . This produces m lines in P2 and the quest...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":"24 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141167589","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
The biderivations of 𝔰𝔩(2,1) with coefficients in simple modules 具有简单模块系数的𝔰𝔩(2,1)的双分维
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-04-30 DOI: 10.1080/00927872.2024.2343760
Xingxue Miao, Shujuan Wang, Wende Liu, Jizhu Nan
{"title":"The biderivations of 𝔰𝔩(2,1) with coefficients in simple modules","authors":"Xingxue Miao, Shujuan Wang, Wende Liu, Jizhu Nan","doi":"10.1080/00927872.2024.2343760","DOIUrl":"https://doi.org/10.1080/00927872.2024.2343760","url":null,"abstract":"Over a field of characteristic p > 2, we first provide the definitions of the supersymmetric super-biderivation and the skew-supersymmetric super-biderivation from a Lie superalgebra g to a g-modul...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":"33 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141167026","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
Double extensions of left-symmetric structures 左对称结构的双重扩展
IF 0.7 3区 数学
Communications in Algebra Pub Date : 2024-04-26 DOI: 10.1080/00927872.2024.2343753
Naoki Kato
{"title":"Double extensions of left-symmetric structures","authors":"Naoki Kato","doi":"10.1080/00927872.2024.2343753","DOIUrl":"https://doi.org/10.1080/00927872.2024.2343753","url":null,"abstract":"The notion of double extension for symplectic Lie algebras was introduced by Medina and Revoy in 1985. In 2021, Valencia gave a condition for symplectic Lie algebras which are obtained through doub...","PeriodicalId":50663,"journal":{"name":"Communications in Algebra","volume":"58 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141167032","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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