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International Journal of Algebra and Computation最新文献

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On an embedding theorem of Cohn 关于Cohn的嵌入定理
IF 0.8 2区 数学
International Journal of Algebra and Computation Pub Date : 2022-01-01 DOI: 10.12988/ija.2022.91647
A. Nagy
{"title":"On an embedding theorem of Cohn","authors":"A. Nagy","doi":"10.12988/ija.2022.91647","DOIUrl":"https://doi.org/10.12988/ija.2022.91647","url":null,"abstract":"In 1956, P.M. Cohn gave necessary and sufficient conditions for a semigroup to be embeddable in a left simple semigroup. The main purpose of this paper is to show how to construct a semigroup which is embeddable in an idempotent-free left simple semigroup. Mathematics Subject Classification: 20M10","PeriodicalId":13756,"journal":{"name":"International Journal of Algebra and Computation","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72786287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Cayley graph for F2 × F2 which is not minimally almost convex 一个F2 × F2的Cayley图它不是最小几乎凸的
IF 0.8 2区 数学
International Journal of Algebra and Computation Pub Date : 2022-01-01 DOI: 10.1142/S0218196722500059
A. Price
{"title":"A Cayley graph for F2 × F2 which is not minimally almost convex","authors":"A. Price","doi":"10.1142/S0218196722500059","DOIUrl":"https://doi.org/10.1142/S0218196722500059","url":null,"abstract":"","PeriodicalId":13756,"journal":{"name":"International Journal of Algebra and Computation","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63937097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Star modules and equivalences 星型模块和等价
IF 0.8 2区 数学
International Journal of Algebra and Computation Pub Date : 2022-01-01 DOI: 10.12988/ija.2022.91721
Yong-lin Zhu
{"title":"Star modules and equivalences","authors":"Yong-lin Zhu","doi":"10.12988/ija.2022.91721","DOIUrl":"https://doi.org/10.12988/ija.2022.91721","url":null,"abstract":"We study characterizations of s-Σ-quasi-projective modules and properties of special star modules (tilting modules and Σ-quasi-projective self-generators) and characterize Σ-self-static star modules in terms of equivalences.","PeriodicalId":13756,"journal":{"name":"International Journal of Algebra and Computation","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80152754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 symmetric identity on Mn(E) and Ma,b(E) Mn(E)和Ma,b(E)上的对称恒等式
IF 0.8 2区 数学
International Journal of Algebra and Computation Pub Date : 2022-01-01 DOI: 10.12988/ija.2022.91728
Geraldo de Assis Junior, Karina Kfouri Sartori, Fernanda Goncalves de Paula
{"title":"The symmetric identity on Mn(E) and Ma,b(E)","authors":"Geraldo de Assis Junior, Karina Kfouri Sartori, Fernanda Goncalves de Paula","doi":"10.12988/ija.2022.91728","DOIUrl":"https://doi.org/10.12988/ija.2022.91728","url":null,"abstract":"In this note we obtain necessary and sufficient conditions for that symmetric polynomial degree m let an polynomial identity for the algebras M n ( E ) and M a,b ( E ) when char K = p > 2.","PeriodicalId":13756,"journal":{"name":"International Journal of Algebra and Computation","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76704630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Methods of Modıfıcatıon of Used Polyolephınes 废旧聚烯烃的Modıfıcatıon方法
IF 0.8 2区 数学
International Journal of Algebra and Computation Pub Date : 2021-10-10 DOI: 10.35940/IJAC.B2003.101221
Shixaliyev Kerem Seyfi
{"title":"Methods of Modıfıcatıon of Used Polyolephınes","authors":"Shixaliyev Kerem Seyfi","doi":"10.35940/IJAC.B2003.101221","DOIUrl":"https://doi.org/10.35940/IJAC.B2003.101221","url":null,"abstract":"","PeriodicalId":13756,"journal":{"name":"International Journal of Algebra and Computation","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49340003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 amenability and measure of maximal entropy for semigroups of rational maps: II 有理映射半群的适应性和最大熵的测度[j]
IF 0.8 2区 数学
International Journal of Algebra and Computation Pub Date : 2021-09-23 DOI: 10.1142/s0218196723500492
P. Makienko, Carlos Cabrera
{"title":"On amenability and measure of maximal entropy for semigroups of rational maps: II","authors":"P. Makienko, Carlos Cabrera","doi":"10.1142/s0218196723500492","DOIUrl":"https://doi.org/10.1142/s0218196723500492","url":null,"abstract":"We compare dynamical and algebraic properties of semigroups of rational maps. In particular, we show a version of the Day-von Neumann's conjecture and give a partial positive answer to\"Sushkievich's problem\"for semigroups of rational maps. We also show the relation of these conjectures with Furstenberg's $times 2 times 3$ problem and prove a coarse version of Furstenberg's problem for semigroups of non-exceptional polynomials.","PeriodicalId":13756,"journal":{"name":"International Journal of Algebra and Computation","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43717688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Number of Countable Subdirect Powers of Unary Algebras 关于一元代数的可数次幂
IF 0.8 2区 数学
International Journal of Algebra and Computation Pub Date : 2021-06-16 DOI: 10.1142/s0218196723500546
N. Ruškuc, B. Witt
{"title":"On the Number of Countable Subdirect Powers of Unary Algebras","authors":"N. Ruškuc, B. Witt","doi":"10.1142/s0218196723500546","DOIUrl":"https://doi.org/10.1142/s0218196723500546","url":null,"abstract":"A finite unary algebra $(A,F)$ has only countably many countable subdirect powers if and only if every operation $fin F$ is either a permutation or a constant mapping.","PeriodicalId":13756,"journal":{"name":"International Journal of Algebra and Computation","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43452650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Thermodinamics and Mutual Distribution of Macromolecules in the Systems: ChlorineChlorocontaining Polymers 体系中大分子的热力学和相互分布:含氯聚合物
IF 0.8 2区 数学
International Journal of Algebra and Computation Pub Date : 2021-04-10 DOI: 10.35940/IJAC.B2002.041121
Shixaliyev Kerem Seyfi
{"title":"Thermodinamics and Mutual Distribution of Macromolecules in the Systems: ChlorineChlorocontaining Polymers","authors":"Shixaliyev Kerem Seyfi","doi":"10.35940/IJAC.B2002.041121","DOIUrl":"https://doi.org/10.35940/IJAC.B2002.041121","url":null,"abstract":"In given work a scientific base compatibility of polymers, produced by industry have been studied by revealing of thermodynamically regularities of polymer mixtures. The most significant thermodynamic regularities of the mixtures of polyolefin , produced by industry and heterochained polymers have been revealed and on this base the scientific bases of their compatibility have been developed for creation of multicomponent compositional materials with given complex of operating properties.","PeriodicalId":13756,"journal":{"name":"International Journal of Algebra and Computation","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44392256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Some results on a variant of the Green correspondence with applications to Alperin's weight conjecture for blocks Green对应的一种变体的一些结果与Alperin块权猜想的应用
IF 0.8 2区 数学
International Journal of Algebra and Computation Pub Date : 2021-01-01 DOI: 10.12988/IJA.2021.91524
M. E. Harris
{"title":"Some results on a variant of the Green correspondence with applications to Alperin's weight conjecture for blocks","authors":"M. E. Harris","doi":"10.12988/IJA.2021.91524","DOIUrl":"https://doi.org/10.12988/IJA.2021.91524","url":null,"abstract":"Alperin’s Weight Conjecture for Blocks (AWCFB) suggests a currently unknown structure in Finite Group Modular Representation Theory. The Green Correspondence fails AWCFB for blocks of p-solvable groups. An important result of L. Barker uses a variant of the Green Correspondence to prove AWFCB for blocks of p-solvable groups. This variant suggests the possibility of further solutions to AWCFB. Let G be a finite group, let N be a normal subgroup of G and let b be a block of N that is covered by the block B of G. Our main results demonstrate that: for B it suffices to obtain a required variant of the Green Correspondence for the block of the stabilizer of b corresponding to B and if b is of defect zero, then it suffices to reduce to the group G/N . L. Barker’s proof of the AWCFB for p-solvable groups is an immediate consequence of our results. Mathematics Subject Classification: 20C20","PeriodicalId":13756,"journal":{"name":"International Journal of Algebra and Computation","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72379163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Auslander-Reiten correspondence of Wakamatsu-silting complexes 若松淤积复合体的Auslander-Reiten对应关系
IF 0.8 2区 数学
International Journal of Algebra and Computation Pub Date : 2021-01-01 DOI: 10.12988/IJA.2021.91529
Weiqing Cao, Jiaqun Wei
{"title":"The Auslander-Reiten correspondence of Wakamatsu-silting complexes","authors":"Weiqing Cao, Jiaqun Wei","doi":"10.12988/IJA.2021.91529","DOIUrl":"https://doi.org/10.12988/IJA.2021.91529","url":null,"abstract":"We introduce the notion of relative coresolving subcategories and bounded Hom-projective generator and then give the Auslander-Reiten correspondence of Wakamatsu-silting complexes. Mathematics Subject Classification: 18G80; 16E35; 16G10","PeriodicalId":13756,"journal":{"name":"International Journal of Algebra and Computation","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91286166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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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