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常系数线性微分方程解法注记
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作者 廖正琦 《重庆师专学报》 1998年第2期6-8,共3页
本文利用代数学的结论改进了常系数线性方程Pn(D)X=Pm(t)e的常规解法,得到此类方程的公式化解法,并把它应用到自由项为较弱条件下求方程的幂级数和傅氏级数解。
关键词 常系线性微分方程 特解 幂线数 解法 傅氏级 迭加原理
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关于差分方程u_(n+r)=sum from i=1 to n+r a_iu_(n+r-i)+b_n的显示解 被引量:4
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作者 杨继明 《西南师范大学学报(自然科学版)》 CAS CSCD 北大核心 1997年第1期23-25,共3页
给出了差分方程un+r=∑n+ri=1aiun+r-i+bnui=cii=0,1,…,r-1{的一个显示解un=dn+∑ni=1dn-i∑k1+2k2+…+iki∑ij=1kj!∏ij=1akjj∏ij=1kj!
关键词 差分方程 显示解 形式幂线数
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The Nilpotency of Lie Triple Algebras
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作者 WANG Gui-dong 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2005年第4期423-429,共7页
In this paper, we mainly concerned about the nilpotence of Lie triple algebras.We give the definition of nilpotence of the Lie triple algebra and obtained that if Lie triplealgebra is nilpotent, then its standard enve... In this paper, we mainly concerned about the nilpotence of Lie triple algebras.We give the definition of nilpotence of the Lie triple algebra and obtained that if Lie triplealgebra is nilpotent, then its standard enveloping Lie algebra is nilpotent. 展开更多
关键词 Lie triple algebra SOLVABILITY NILPOTENCE
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A Categorification of Quantum sl_2
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作者 王娜 王志玺 +1 位作者 吴可 杨紫峰 《Communications in Theoretical Physics》 SCIE CAS CSCD 2011年第7期37-45,共9页
In this paper, we categorify the algebra Uq(sl2) with the same approach as in [A. Lauda, Adv. Math. (2010), arXiv:math.QA/0803.3662; M. Khovanov, Comm. Algebra 11 (2001) 5033]. The algebra U =Uq(sl2) is obtai... In this paper, we categorify the algebra Uq(sl2) with the same approach as in [A. Lauda, Adv. Math. (2010), arXiv:math.QA/0803.3662; M. Khovanov, Comm. Algebra 11 (2001) 5033]. The algebra U =Uq(sl2) is obtained from Uq(sl2) by adjoining a collection of orthogonal idempotents 1λ,λ ∈ P, in which P is the weight lattice of Uq(sl2). Under such construction the algebra U is decomposed into a direct sum λ∈p 1λ,U1λ. We set the collection of λ∈ P as the objects of the category U, 1-morphisms from λ to λ′ are given by 1λ,U1λ, and 2-morphisms are constructed by some semilinear form defined on U. Hence we get a 2-category u from the algebra Uq(sl2). 展开更多
关键词 quantum affine algebra CATEGORIFICATION
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Permutation polynomials with low differential uniformity over finite fields of odd characteristic 被引量:2
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作者 JIA WenJie ZENG XiangYong +2 位作者 LI ChunLei HELLESETH Tor HU Lei 《Science China Mathematics》 SCIE 2013年第7期1429-1440,共12页
In this paper, we propose a construction of functions with low differential uniformity based on known perfect nonlinear functions over finite fields of odd characteristic. For an odd prime power q, it is proved that t... In this paper, we propose a construction of functions with low differential uniformity based on known perfect nonlinear functions over finite fields of odd characteristic. For an odd prime power q, it is proved that the proposed functions over the finite field Fq are permutations if and only if q≡3(mod 4). 展开更多
关键词 PERMUTATION perfect nonlinear function almost perfect nonlinear function differential uniformity
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