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加密数据上的计算密码学技术研究综述 被引量:11
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作者 董秋香 关志 陈钟 《计算机应用研究》 CSCD 北大核心 2016年第9期2561-2572,共12页
近年来机密数据被盗事件在国内外时有发生,其所带来的经济损失和社会影响持续加剧。尽管已有系统采取了若干安全措施,然而经验表明,攻击者往往能够通过各种方式攻入系统,盗取用户数据。为了从根本上保护数据机密性,应确保即使攻击者能... 近年来机密数据被盗事件在国内外时有发生,其所带来的经济损失和社会影响持续加剧。尽管已有系统采取了若干安全措施,然而经验表明,攻击者往往能够通过各种方式攻入系统,盗取用户数据。为了从根本上保护数据机密性,应确保即使攻击者能够获取存储在服务器上数据的访问权限,数据机密性依然不受到威胁,即数据以加密形式存储在服务器上;另外,为了保持数据的可用性,应允许服务器在密文上进行计算。针对支持在加密数据上计算的密码学技术,如同态加密、函数加密、可搜索加密以及CryptDB和Monomi等应用系统进行了综述性介绍,并指出有待解决的关键问题和未来的研究方向。 展开更多
关键词 数据泄露 数据机密性 同态加密 函数加密 可搜索加密 CryptDB Monomi
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三角Monomial代数的张量积
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作者 陈梅香 陈清华 《福建师范大学学报(自然科学版)》 CAS CSCD 北大核心 2007年第6期19-23,共5页
考虑三角monomial代数的张量积及其箭图刻画.进一步地,通过箭图表示,讨论代数A、B与扩张代数A kB之间模的关系,包括不可分解模、投射模、内射模、平坦模等.
关键词 三角monomial代数 箭图表示 投射模 不可分解模
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Certain Results for the 2-Variable Peters Mixed Type and Related Polynomials
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作者 Ghazala Yasmin 《Analysis in Theory and Applications》 CSCD 2018年第2期147-164,共18页
In this article, the 2-variable general polynomials are taken as base with Peters polynomials to introduce a family of 2-variable Peters mixed type polynomials.These polynomials are framed within the context of monomi... In this article, the 2-variable general polynomials are taken as base with Peters polynomials to introduce a family of 2-variable Peters mixed type polynomials.These polynomials are framed within the context of monomiality principle and their properties are established. Certain summation formulae for these polynomials are also derived. Examples of some members belonging to this family are considered and numbers related to some mixed special polynomials are also explored. 展开更多
关键词 2-Variable general POLYNOMIALS Peters POLYNOMIALS 2-variable TRUNCATED EXPONENTIAL POLYNOMIALS Sheffer sequences monomiality principle
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拟遗传代数的一种判定方法
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作者 林卫强 《漳州师范学院学报(自然科学版)》 2001年第3期21-28,共8页
利用[1]中引进的图表示的两个子范畴,给出拟遗传代数的一种判定方法。
关键词 拟遗传代数 第一类表示 第二类表示 monomial代数
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Monomial拟遗传代数的好模范畴
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作者 林卫强 《漳州师范学院学报(自然科学版)》 2001年第2期18-23,共7页
用图表示的两个子范畴及其性质,研究monomial代数及其上的拟遗传代数的好模范畴,余好模范畴,及特征模。主要结论给出了A是monomial代数及F(Δ)=rep1≤(Q,I)的刻划及其对偶结论。
关键词 拟遗传代数:Monomial代数:图的表示范畴
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ON VALUE DISTRIBUTIONS OF GENERAL DIFFERENTIAL MONOMIALS
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作者 吴天毅 李伟 程英 《Transactions of Tianjin University》 EI CAS 2001年第1期68-70,共3页
Value distributions of the general differential monomials is discussed.The following theorem is obtained:Let f be a transcendental meromorphic function in the plane,F=f n 0 (f (i) ) n i …(f (k) ) ... Value distributions of the general differential monomials is discussed.The following theorem is obtained:Let f be a transcendental meromorphic function in the plane,F=f n 0 (f (i) ) n i …(f (k) ) n k -c,n i≥1,c≠0 be a constant then (n 0-2)T(r,f)≤(r,1F)+S(r,f) when n 0】2;T(r,f)≤7(i+1)i( i) (r,1f)+(r,1F))+S(r,f) when n 0=1;T(r,f)≤7(N(r,1f)+(r,1F))+S(r,f) when n 0=0. 展开更多
关键词 meromorphic function differential monomial differential polynomial value distribution
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Monomials with t-value ≤ 6 in Canonical Basis of Quantized Enveloping Algebra of Type B3 被引量:2
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作者 胡余旺 耿亚军 《Chinese Quarterly Journal of Mathematics》 2015年第3期462-474,共13页
All monomials with t-value ≤ 6 in Canonical basis of quantized enveloping algebra of type B3 are determined in this paper.
关键词 quantum group CANONICAL BASIS TIGHT monomial
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A note on the perturbed monomial mapping
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作者 QU Cheng-qin ZHU Zhi-wei ZHOU Zuo-ling 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2019年第1期76-81,共6页
In this paper, we present a necessary and suffcient condition that the perturbed monomial mapping is ergodic on a sphere S_(p-1)(1), which is in a combination with Anashin's earlier results about the perturbed mon... In this paper, we present a necessary and suffcient condition that the perturbed monomial mapping is ergodic on a sphere S_(p-1)(1), which is in a combination with Anashin's earlier results about the perturbed monomial ergodic mappings on a sphere S_(p-r)(1), r > 1, completely solve a problem posed by A. Khrennikov about the ergodicity of a perturbed monomial mapping on a sphere. 展开更多
关键词 PERTURBED monomial MAPPING ERGODIC P-ADIC INTEGERS
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Monomial Derivations without Darboux Polynomials
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作者 Li Jian-tao 《Communications in Mathematical Research》 CSCD 2017年第2期185-192,共8页
In this paper, it is proved that a monomial derivation d of k[x, y, z] has no Darboux polynomials if and only if d is a strict derivation with a trivial ring of constants, and we give the specific conditions when it h... In this paper, it is proved that a monomial derivation d of k[x, y, z] has no Darboux polynomials if and only if d is a strict derivation with a trivial ring of constants, and we give the specific conditions when it has no Darboux polynomials. 展开更多
关键词 DERIVATION monomial derivation Darboux polynomial ring of constants
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Batalin-Vilkovisky Structure on Hochschild Cohomology of Self-Injective Quadratic Monomial Algebras
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作者 GAO Jin HOU Bo 《Chinese Quarterly Journal of Mathematics》 2021年第3期320-330,共11页
We give a complete description of the Batalin-Vilkovisky algebra structure on Hochschild cohomology of the self-injective quadratic monomial algebras.
关键词 Batalin-Vilkovisky algebra structure Hochschild cohomology Self-injective quadratic monomial algebra
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Tight Monomials in Quantum Group for Type <i>A</i><sub>5</sub>with <i>t</i>≤ 6
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作者 Yuwang Hu Guiwei Li Jun Wang 《Advances in Linear Algebra & Matrix Theory》 2015年第3期63-75,共13页
All tight monomials in quantum group for type A5 with t ≤ 6 are determined in this paper.
关键词 Quantum Group CANONICAL Basis TIGHT Monomial
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Tight Monomials with t-Value ≤ 9 for Quantum Group of Type D<sub>4</sub>
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作者 Yuwang Hu Jifang Hu Qiongru Wu 《Advances in Linear Algebra & Matrix Theory》 2017年第4期84-107,共24页
All monomials with t-value ≤9 in Canonical basis of quantum group for type D4 are determined in this paper.
关键词 Quantum Group CANONICAL BASIS TIGHT Monomial
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Colon Structure of Associated Primes of Monomial Ideals
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作者 Siddhi Balu Ambhore Indranath Sengupta 《Algebra Colloquium》 SCIE CSCD 2024年第3期441-450,共10页
We find an explicit expression of the associated primes of monomial ideals as a colon by an element,using the unique irredundant irreducible decomposition whose irreducible components are monomial ideals.An algorithm ... We find an explicit expression of the associated primes of monomial ideals as a colon by an element,using the unique irredundant irreducible decomposition whose irreducible components are monomial ideals.An algorithm to compute is given using Macaulay2.For squarefree monomial ideals the problem is related to the combinatorics of the underlying clutter or graph.For ideals of Borel type,the monomial u takes a simpler form,and we classify when is unique. 展开更多
关键词 monomial ideals associated primes colon ideals
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A Characterization of Sequentially Cohen-Macaulay Matroidal Ideals
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作者 Payman Mahmood Hamaali Amir Mafi Hero Saremi 《Algebra Colloquium》 SCIE CSCD 2023年第2期237-244,共8页
Let R=K[x1,…,xn]be the polynomial ring in n variables over a field K and I be a matroidal ideal of R.We show that I is sequentially Cohen-Macaulay if and only if the Alexander dual Iy has linear quotients.As a conseq... Let R=K[x1,…,xn]be the polynomial ring in n variables over a field K and I be a matroidal ideal of R.We show that I is sequentially Cohen-Macaulay if and only if the Alexander dual Iy has linear quotients.As a consequence,I is sequentially Cohen-Macaulay if and only if I is shellable. 展开更多
关键词 sequentially Cohen-Macaulay monomial ideals matroidal ideals
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Monomial Hopf algebras over fields of positive characteristic 被引量:2
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作者 LIU Gongxiang & YE Yu Institute of Mathematics, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100080, China Department of Mathematics, University of Science and Technology of China, Hefei 230026, China 《Science China Mathematics》 SCIE 2006年第3期320-329,共10页
In this paper, we study the structures of monomial Hopf algebras over a field of positive characteristic. A necessary and sufficient condition for the monomial coalgebra Cd(n) to admit Hopf structures is given here, a... In this paper, we study the structures of monomial Hopf algebras over a field of positive characteristic. A necessary and sufficient condition for the monomial coalgebra Cd(n) to admit Hopf structures is given here, and if it is the case, all graded Hopf structures on Cd(n)are completely classified. Moreover, we construct a Hopf algebras filtration on Cd(n) which will help us to discuss a conjecture posed by Andruskiewitsch and Schneider. Finally combined with a theorem by Montgomery, we give the structure theorem for all monomial Hopf algebras. 展开更多
关键词 monomial coalgebra GAUSSIAN BINOMIAL coefficient monomial HOPF algebra.
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On the Unique Minimal Monomial Basis of Birkhoff Interpolation Problem 被引量:2
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作者 ZHENG Xiaopeng CHAI Junjie +1 位作者 SONG Mengci LEI Na 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2016年第3期825-841,共17页
This paper studies the minimal monomial basis of the n-variable Birkhoff interpolation problem. First, the authors give a fast B-Lex algorithm which has an explicit geometric interpretation to compute the minimal mono... This paper studies the minimal monomial basis of the n-variable Birkhoff interpolation problem. First, the authors give a fast B-Lex algorithm which has an explicit geometric interpretation to compute the minimal monomial interpolation basis under lexieographie order and the algorithm is in fact a generalization of lex game algorithm. In practice, people usually desire the lowest degree interpolation polynomial, so the interpolation problems need to be solved under, for example, graded monomial order instead of lexicographie order. However, there barely exist fast algorithms for the non- lexicographic order problem. Hence, the authors in addition provide a criterion to determine whether an n-variable Birkhoff interpolation problem has unique minimal monomial basis, which means it owns the same minimal monomial basis w.r.t, arbitrary monomial order. Thus, for problems in this case, the authors can easily get the minimal monomial basis with little computation cost w.r.t, arbitrary monomial order by using our fast B-Lex algorithm. 展开更多
关键词 Birkhoff interpolation minimal monomial basis unique minimal monomial basis
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Zeros of Monomial Brauer Characters 被引量:1
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作者 Xiaoyou CHEN Gang CHEN 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2019年第2期213-216,共4页
Let G be a finite group and p be a fixed prime. A p-Brauer character of G is said to be monomial if it is induced from a linear p-Brauer character of some subgroup(not necessarily proper) of G. Denote by IBr_m(G) the ... Let G be a finite group and p be a fixed prime. A p-Brauer character of G is said to be monomial if it is induced from a linear p-Brauer character of some subgroup(not necessarily proper) of G. Denote by IBr_m(G) the set of irreducible monomial p-Brauer′characters of G. Let H = G′O^p′(G) be the smallest normal subgroup such that G/H is an abelian p′-group. Suppose that g ∈ G is a p-regular element and the order of gH in the factor group G/H does not divide |IBr_m(G)|. Then there exists ? ∈ IBr_m(G) such that ?(g) = 0. 展开更多
关键词 BRAUER CHARACTER FINITE group VANISHING REGULAR element Monomial BRAUER CHARACTER
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On monomial linearisation and supercharacters of pattern subgroups 被引量:1
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作者 Qiong Guo Richard Dipper 《Science China Mathematics》 SCIE CSCD 2018年第2期227-252,共26页
Column closed pattern subgroups U of the finite upper unitriangular groups U_n(q) are defined as sets of matrices in U_n(q) having zeros in a prescribed set of columns besides the diagonal ones. We explain Jedlitschky... Column closed pattern subgroups U of the finite upper unitriangular groups U_n(q) are defined as sets of matrices in U_n(q) having zeros in a prescribed set of columns besides the diagonal ones. We explain Jedlitschky's construction of monomial linearisation in his thesis and apply this to CU yielding a generalisation of Yan's coadjoint cluster representations. Then we give a complete classification of the resulting supercharacters,by describing the resulting orbits and determining the Hom-spaces between orbit modules. 展开更多
关键词 column closed subgroups monomial linearisation supercharacter
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Infinite dimensional Cauchy-Kowalevski and Holmgren type theorems
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作者 Jiayang Yu Xu Zhang 《Science China Mathematics》 SCIE CSCD 2019年第9期1645-1656,共12页
The aim of this paper is to show Cauchy-Kowalevski and Holmgren type theorems with an infinite number of variables. We adopt von Koch and Hilbert’s definition of analyticity of functions as monomial expansions. Our C... The aim of this paper is to show Cauchy-Kowalevski and Holmgren type theorems with an infinite number of variables. We adopt von Koch and Hilbert’s definition of analyticity of functions as monomial expansions. Our Cauchy-Kowalevski type theorem is derived by modifying the classical method of majorants.Based on this result, by employing some tools from abstract Wiener spaces, we establish our Holmgren type theorem. 展开更多
关键词 Cauchy-Kowalevski THEOREM Holmgren TYPE THEOREM monomial EXPANSIONS abstract WIENER space divergence THEOREM method of majorants
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NONLINEAR FEEDFORWARD SEQUENCES OF m-SEQUENCES (Ⅲ)
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作者 DAI Zongduo(Graduate School,Academia Sinica, Beijing 100039, China)FENG Xuuing(Institute of Mathematics,Academia Sinica, Beijing 100080, China)LIU Mulan WAN Zhexian(Institute of Systems Science, Academia Sinica, Beijing 100080, China) 《Systems Science and Mathematical Sciences》 SCIE EI CSCD 1994年第4期367-370,共4页
NONLINEARFEEDFORWARDSEQUENCESOFm-SEQUENCES(Ⅲ)DAIZongduo(GraduateSchool,AcademiaSinica,Beijing100039,China)FE... NONLINEARFEEDFORWARDSEQUENCESOFm-SEQUENCES(Ⅲ)DAIZongduo(GraduateSchool,AcademiaSinica,Beijing100039,China)FENGXuuing(Institut... 展开更多
关键词 Non-degenerate monomial FUNCTION CONGRUENT monomial FUNCTION
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