期刊文献+
共找到4,096篇文章
< 1 2 205 >
每页显示 20 50 100
(α,γ)-Anti-Multi-Fuzzy Subgroups and Some of Its Properties
1
作者 Memet Sahin Vakkas Uluçay +2 位作者 S.A.Edalatpanah Fayza Abdel Aziz Elsebaee Hamiden Abd El-Wahed Khalifa 《Computers, Materials & Continua》 SCIE EI 2023年第2期3221-3229,共9页
Recently,fuzzy multi-sets have come to the forefront of scientists’interest and have been used in algebraic structures such asmulti-groups,multirings,anti-fuzzy multigroup and(α,γ)-anti-fuzzy subgroups.In this pape... Recently,fuzzy multi-sets have come to the forefront of scientists’interest and have been used in algebraic structures such asmulti-groups,multirings,anti-fuzzy multigroup and(α,γ)-anti-fuzzy subgroups.In this paper,we first summarize the knowledge about the algebraic structure of fuzzy multi-sets such as(α,γ)-anti-multi-fuzzy subgroups.In a way,the notion of anti-fuzzy multigroup is an application of anti-fuzzy multi sets to the theory of group.The concept of anti-fuzzy multigroup is a complement of an algebraic structure of a fuzzy multi set that generalizes both the theories of classical group and fuzzy group.The aim of this paper is to highlight the connection between fuzzy multi-sets and algebraic structures from an anti-fuzzification point of view.Therefore,in this paper,we define(α,γ)-antimulti-fuzzy subgroups,(α,γ)-anti-multi-fuzzy normal subgroups,(α,γ)-antimulti-fuzzy homomorphism on(α,γ)-anti-multi-fuzzy subgroups and these been explicated some algebraic structures.Then,we introduce the concept(α,γ)-anti-multi-fuzzy subgroups and(α,γ)-anti-multi-fuzzy normal subgroups and of their properties.This new concept of homomorphism as a bridge among set theory,fuzzy set theory,anti-fuzzy multi sets theory and group theory and also shows the effect of anti-fuzzy multi sets on a group structure.Certain results that discuss the(α,γ)cuts of anti-fuzzy multigroup are explored. 展开更多
关键词 Fuzzy set anti-fuzzy multi set anti-fuzzy multi subgroup anti-fuzzy multi normal subgroup
下载PDF
The Structure of Step Fuzzy Subgroups
2
作者 李建新 胡刚 《广东工业大学学报》 CAS 1997年第2期5-12,共8页
定义了模糊阶梯型子群,并研究了阶梯型模糊子群与经典群之间的关系.
关键词 群论 模糊子群 T模 阶梯模糊子群
下载PDF
On the Equal-height Elements of the Fuzzy Subgroups
3
作者 张诚一 胡丽萍 党平安 《Chinese Quarterly Journal of Mathematics》 CSCD 2001年第2期82-85,共4页
The properties of the equal height elements of the fuzzy subroups and the classification of groups by its fuzzy subgroups are discussed.
关键词 GROUP fuzzy subgroup EQUIVALENCE equal height element
下载PDF
“Finite Groups with Quasinormal Subgroups of Prince Power Order”一文的一点注记
4
作者 朱静萍 《南昌大学学报(理科版)》 CAS 北大核心 2004年第4期336-337,355,共3页
用F (G)代替F(G),将文"FiniteGroupswithQuasinormalSubgroupsofPrimePowerOrder,ActaMathHun gar89(4),2000,321-326"一文中的主要定理的可解性的假设去除,从而推广了该文的结论。
关键词 有限群 Fitting-子群F(G) 广义Fitting-子群F(G) 拟正规子群
下载PDF
ON F-z-SUPPLEMENTED SUBGROUPS OF FINITE GROUPS 被引量:5
5
作者 郭文彬 唐娜 李保军 《Acta Mathematica Scientia》 SCIE CSCD 2011年第1期22-28,共7页
A subgroup H of a group G is called F-z-supplemented in G if there exists a subgroup K of G, such that G = HK and H∩K≤ Z∞F(G), where Z∞F(G) is the F-hypercenter of G. We obtain some results about the F-z-suppl... A subgroup H of a group G is called F-z-supplemented in G if there exists a subgroup K of G, such that G = HK and H∩K≤ Z∞F(G), where Z∞F(G) is the F-hypercenter of G. We obtain some results about the F-z-supplemented subgroups and use them to determine the structure of some groups. 展开更多
关键词 Finite groups local formations F-z-supplemented subgroups supersoluble groups p-nilpotent groups
下载PDF
FINITE GROUPS WHOSE MINIMAL SUBGROUPS ARE WEAKLY H-SUBGROUPS 被引量:2
6
作者 M.M.Al-Mosa Al-Shomrani M.Ramadan A.A.Heliel 《Acta Mathematica Scientia》 SCIE CSCD 2012年第6期2295-2301,共7页
Let G be a finite group. A subgroup H of G is called an H-subgroup in G if NG(H)∩ H^g ≤ H for all g C G. A subgroup H of G is called a weakly H-subgroup in G if there exists a normal subgroup K of G such that G = ... Let G be a finite group. A subgroup H of G is called an H-subgroup in G if NG(H)∩ H^g ≤ H for all g C G. A subgroup H of G is called a weakly H-subgroup in G if there exists a normal subgroup K of G such that G = HK and H N K is an H-subgroup in G. In this paper, we investigate the structure of the finite group G under the assumption that every subgroup of G of prime order or of order 4 is a weakly H-subgroup in G. Our results improve and generalize several recent results in the literature. 展开更多
关键词 c-normal subgroup H-subgroup p-nilpotent group supersolvable group generalized Fitting subgroupi saturated formation
下载PDF
SOME SUBGROUPS OF THE EXTENDED HECKE GROUPS H^-(λq) 被引量:1
7
作者 ReeepSahin OsmanBizim 《Acta Mathematica Scientia》 SCIE CSCD 2003年第4期497-502,共6页
The authors consider the extended Hecke groups H(γq) generated by T(z) = -1 / z, S(z) = -1(z +γq) and R(z) = 1 / z with A, = 2 cos(π/q) for q≥3 an integer. In this paper, the even subgroup He(γq), the second comm... The authors consider the extended Hecke groups H(γq) generated by T(z) = -1 / z, S(z) = -1(z +γq) and R(z) = 1 / z with A, = 2 cos(π/q) for q≥3 an integer. In this paper, the even subgroup He(γq), the second commutator subgroup H''(γq) and the principal congruence subgroups Hp(λq) of the extended Hecke groups .H(γq) are studied. Also, relations between them are given. 展开更多
关键词 Extended Hecke group even subgroup commutator subgroup principal congruence subgroup
下载PDF
Some Generalized Normal Subgroups and p-nilpotency of Finite Groups 被引量:1
8
作者 ZHONG Guo LIN Shi-Xun +1 位作者 CHEN Qi-le QIN Li-hua 《Chinese Quarterly Journal of Mathematics》 2018年第1期17-24,共8页
In this paper, the influence of s-semipermutable, c~#-normal, subnormally embedded and ss-quasinormal subgroups on the p-nilpotency of finite groups is investigated and some recent results are generalized.
关键词 s-semipermutable subgroups c#-normal subgroups subnormally embedded subgroups ss-quasinormal subgroups p-nilpotency
下载PDF
Fully Secure Identity-based Broadcast Encryption in the Subgroups 被引量:1
9
作者 张乐友 胡予濮 吴青 《China Communications》 SCIE CSCD 2011年第2期152-158,共7页
In this paper,we show how to use the dual techniques in the subgroups to give a secure identity-based broadcast encryption(IBBE) scheme with constant-size ciphertexts. Our scheme achieves the full security(adaptive se... In this paper,we show how to use the dual techniques in the subgroups to give a secure identity-based broadcast encryption(IBBE) scheme with constant-size ciphertexts. Our scheme achieves the full security(adaptive security) under three static(i.e. non q-based) assumptions. It is worth noting that only recently Waters gives a short ciphertext broadcast encryption system that is even adaptively secure under the simple assumptions. One feature of our methodology is that it is relatively simple to leverage our techniques to get adaptive security. 展开更多
关键词 identity-based broadcast encryption dual system encryption full security static assumption subgroup provable security
下载PDF
On s*-Completions of Maximal Subgroups of Finite Groups 被引量:1
10
作者 高辉 高胜哲 尹丽 《Chinese Quarterly Journal of Mathematics》 2015年第3期381-388,共8页
Given a maximal subgroup M of a group G, a θ*-completion C of M is called an s*-completion if either C = G or there exists a subgroup D of G which is not a θ*-completion of M such that D contains C as a maximal subg... Given a maximal subgroup M of a group G, a θ*-completion C of M is called an s*-completion if either C = G or there exists a subgroup D of G which is not a θ*-completion of M such that D contains C as a maximal subgroup. In this paper, we obtain several results on s*-completions which imply G to be solvable or supersolvable. 展开更多
关键词 MAXIMAL subgroups θ*-completions s*-completions SOLVABLE GROUPS super-solvable GROUPS
下载PDF
An Investigation on the Parabolic Subgroups of the General Linear Groups by Using GAP 被引量:1
11
作者 Saad A Bedaiwi LI Shang-zhi 《Chinese Quarterly Journal of Mathematics》 CSCD 2004年第3期221-231,共11页
A typical example for the algebraic groups is the general linear groups G=GL(n,F), we have studied the structure of such groups and paid special attention to its important substructures, namely the Parabolic subgroups... A typical example for the algebraic groups is the general linear groups G=GL(n,F), we have studied the structure of such groups and paid special attention to its important substructures, namely the Parabolic subgroups. For a given G we computed all the Parabolic subgroups and determined their number, depending on the fact that any finite group has a composition series and the composition factors of a composition series are simple groups which are completely classified, we report here some investigations on the computed Parabolic subgroups. This has been done with the utility of GAP. 展开更多
关键词 general linear group parabolic subgroup GAP
下载PDF
关于《Fuzzy Subgroups,Fuzzy Ideals,and Fuzzy Cosets:Some properties》一文的注记
12
作者 谢祥云 《五邑大学学报(自然科学版)》 CAS 1999年第2期35-36,共2页
提出了一个反例说明《Fuzzysubgroups,fuzzyideals,andfuzzycosets:Someproperties》一文中一定理证明的错误并给出了一个正确的证明。
关键词 模糊子群 模糊理想 表示定理 四元素群
全文增补中
On θ*-completions of F-abnormal Subgroups
13
作者 高辉 高胜哲 尹丽 《Chinese Quarterly Journal of Mathematics》 2016年第4期406-411,共6页
Let F be a saturated formation of finite groups. Given a proper subgroup H of a group G, a subgroup H of G is called F-normal in G if G/HGbelongs to F; otherwise H is said to be F-abnormal in G. In this paper, we inve... Let F be a saturated formation of finite groups. Given a proper subgroup H of a group G, a subgroup H of G is called F-normal in G if G/HGbelongs to F; otherwise H is said to be F-abnormal in G. In this paper, we investigate the structure of a finite group by θ*-completions of F-abnormal subgroups. 展开更多
关键词 θ*-completions maximal subgroups 2-maximal subgroups F-abnormal subgroups
下载PDF
Locally Transitive Graphs Admitting a Group with Cyclic Sylow Subgroups
14
作者 CHEN SHANG-DI FENG QING-LIN Du Xian-kun 《Communications in Mathematical Research》 CSCD 2010年第3期239-254,共16页
All graphs are finite simple undirected and of no isolated vertices in this paper. Using the theory of coset graphs and permutation groups, it is completed that a classification of locally transitive graphs admitting ... All graphs are finite simple undirected and of no isolated vertices in this paper. Using the theory of coset graphs and permutation groups, it is completed that a classification of locally transitive graphs admitting a non-Abelian group with cyclic Sylow subgroups. They are either the union of the family of arc-transitive graphs, or the union of the family of bipartite edge-transitive graphs. 展开更多
关键词 GRAPH locally-transitive-graph Sylow subgroup cyclic group
下载PDF
EFFECTS OF MEDICINAL MOXIBUSTION ON SERUM GASTRIN,URINARY D-XYLOSE EXCRETORY RATE AND T CELL SUBGROUPS IN SPLEEN DEFICIENCY PATIENTS
15
作者 周建伟 张凡 肖鸣 《World Journal of Acupuncture-Moxibustion》 1997年第2期18-21,共4页
The medicinal moxa stick made by moxa wool combining with Chinese medicines of supporting the body resistance and strengthening the spleen was used to treat 74 cases of spleen deficiency, the other 41 patients as cont... The medicinal moxa stick made by moxa wool combining with Chinese medicines of supporting the body resistance and strengthening the spleen was used to treat 74 cases of spleen deficiency, the other 41 patients as control were treated by pure moxa stick. After treatment, the serum gastrin, urinary D - xylose excretory rate and T cell subgroups in patients with spleen deficiency have been greatly improved as compared with those before treatment in two groups (P< 0.01 or 0.05). Comparing the changes of the indexes between treatment group and control group, there were significant(P<0.05), or markedly significant(P<0.01) differences. It indicated that the medicinal moxibustion could improve the secreting and absorbing functions of digestive tract and the cellular immune function in patients with spleen deficiency. 展开更多
关键词 Syndrome of spleen deficiency MEDICINAL MOXIBUSTION Serum gastrin URINARY Dxylose excretory RATE T CELL subgroups
下载PDF
The Influence of Primitive Subgroups on the Structure of Finite Groups
16
作者 Liu Yu-feng Du Xian-kun 《Communications in Mathematical Research》 CSCD 2013年第2期179-183,共5页
A subgroup H of a group G is said to be primitive if it is a proper subgroup of the intersection of all subgroups of G containing H as its proper subgroup. The purpose of this note is to go further into the influence ... A subgroup H of a group G is said to be primitive if it is a proper subgroup of the intersection of all subgroups of G containing H as its proper subgroup. The purpose of this note is to go further into the influence of primitive subgroups on the structure of finite groups. Some new results are obtained. 展开更多
关键词 primitive subgroup supersoluble group structure of group
下载PDF
Subgroups of chronic fatigue syndrome based on psychiatric disorder onset and current psychiatric status
17
作者 Molly M. Brown Carly Kaplan +1 位作者 Leonard A. Jason Christopher B. Keys 《Health》 2010年第2期90-96,共7页
Few studies have examined the effects of psy-chiatric disorders occurring over a long dura-tion among patients with chronic fatigue syn-drome (CFS). The role of premorbid and current psychiatric disorders in impairmen... Few studies have examined the effects of psy-chiatric disorders occurring over a long dura-tion among patients with chronic fatigue syn-drome (CFS). The role of premorbid and current psychiatric disorders in impairment was ex-plored with a sample of 113 participants with CFS. Subgroups were created based on past and current psychiatric status including those whose psychiatric history was premorbid and current, postmorbid and current, past but not current, and those with no lifetime diagnosis. Results from a one-way MANOVA revealed that patients with a premorbid and current psychiat-ric disorder reported significantly higher pain severity, more somatic symptoms, poorer sleep quality, and poorer quality of life than those with no psychiatric history. Levels of fatigue and physical functioning among patients with CFS were unrelated to the four subgroups in this study. Although those with a premorbid and current psychiatric disorder were differentiated from those with no psychiatric history on some markers of impairment, the sample as a whole had severe fatigue-related impairment, which is the cardinal symptom of CFS. Implications for research are discussed. 展开更多
关键词 CHRONIC Fatigue Syndrome PSYCHIATRIC COMORBIDITY subgroups IMPAIRMENT
下载PDF
s-Conditionally Permutable Subgroups and p-Nilpotency of Finite Groups
18
作者 刘熠 秦亚 《Journal of Southwest Jiaotong University(English Edition)》 2010年第2期177-181,共5页
A subgroup H of G is called s-conditionally permutable in G if for every Sylow subgroup T of G, there exists an element x ∈ G such that HTK = T^KH. In this paper, we investigate further the influence of s-conditional... A subgroup H of G is called s-conditionally permutable in G if for every Sylow subgroup T of G, there exists an element x ∈ G such that HTK = T^KH. In this paper, we investigate further the influence of s-conditionally permutability of some 2-maximal subgroups of the Sylow subgroup of G, on the structure of finite groups. New criteria for a group G being p-nilpotent are obtained. 展开更多
关键词 s-Conditionally permutable subgroup 2-Maximal subgroup p-Nilpotent group
下载PDF
Structure of Groups with Generalized Normal Subgroups
19
作者 Mohammad Arshaduzzaman 《Advances in Pure Mathematics》 2014年第6期261-268,共8页
The present paper deals with a subgroup X of a group G is almost normal if the index |G: NG(X)| is finite, while X is nearly normal if it has finite index in the normal closure XG. This paper investigates the structur... The present paper deals with a subgroup X of a group G is almost normal if the index |G: NG(X)| is finite, while X is nearly normal if it has finite index in the normal closure XG. This paper investigates the structure of groups in which every (infinite) subgroup is either almost normal or nearly normal. 展开更多
关键词 NORMALITY NEARLY NORMALITY NORMALIZER subgroup
下载PDF
Discreteness Criterion for Subgroups in PU(1,n;C)
20
作者 YANG Juan WANG hua 《Chinese Quarterly Journal of Mathematics》 2018年第2期194-198,共5页
In this paper,the authors introduce the discreteness criterion for n-dimensional subgroups in PU(1, n; C).These generalize the well-known discreteness criterion first established by T.Jorgensen.
关键词 Discreteness criterion n-dimensional subgroups PU(1 n C)
下载PDF
上一页 1 2 205 下一页 到第
使用帮助 返回顶部