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(∈,∈∨q_(λ,μ))-模糊子近环和理想 总被引:2,自引:0,他引:2
给出(∈,∈∨q_(λ,μ))-模糊子近环和理想的全新概念及刻画,并获得一些充分必要条件.其中值得指出的是当λ=0,μ=0.5时可以得到Davvaz文章中的相关结论[B.Davvaz, (∈,∈∨q)-fuzzy subnear-rings and ideals, soft comput.,2006,10:206-211]. 当λ=0,μ=1时可以得到Rosenfeld意义下的结论. 相似文献
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((∈),(∈)V(q)(λμ))-模糊子近环及其理想 总被引:4,自引:0,他引:4
给出(∈,∈Vq-(λμ>)-模糊子近环及其理想的概念,并讨论了它们的一些代数性质.将通常的反模糊代数与(∈-,∈-Vq-)-模糊代数进行了统一和推广.当λ=1,μ=0.5时,(∈-,∈-Vq-(1,0.5)-模糊子近环为(∈-,∈-Vq-)一模糊子近环;当λ=1,μ=0时,(∈-,∈-Vq-(1,0)-模糊子近环为通常的反模糊子近环. 相似文献
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本文称环Ω的左(右)理想A为因子幂零的,如果对于任意元素r∈Ω,均有正整数m=m(r),使得Amr={0}.称Ω的一个左理想L为关于元素b∈Ω的左因子,如果Lb≠{0}.定理4 设R是环Ω的因子幂零右理想,那么R+ΩR是Ω的一个因子幂零理想.定理7 设Ω具有局部左因子极小条件,那么Ω的任意诣零左理想必是因子幂零左理想.本文指出因子幂零性是介于幂零性与诣零性之间的一种性质,更接近幂零性。 相似文献
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Basudeb Dhara 《代数通讯》2013,41(6):2159-2167
Let R be a prime ring of char R ≠ 2, d a nonzero derivation of R, U a noncentral Lie ideal of R, and a ∈ R. If au n 1 d(u) n 2 u n 3 d(u) n 4 u n 5 … d(u) n k?1 u n k = 0 for all u ∈ U, where n 1, n 2,…,n k are fixed non-negative integers not all zero, then a = 0 and if a(u s d(u)u t ) n ∈ Z(R) for all u ∈ U, where s ≥ 0, t ≥ 0, n ≥ 1 are some fixed integers, then either a = 0 or R satisfies S 4, the standard identity in four variables. 相似文献
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Let R be a noncommutative prime ring of characteristic different from 2 with Utumi quotient ring U and extended centroid C, and f(x1,…, xn) be a multilinear polynomial over C, which is not central valued on R. Suppose that F and G are two generalized derivations of R and d is a nonzero derivation of R such that d(F(f(r))f(r) ? f(r)G(f(r))) = 0 for all r = (r1,…, rn) ∈ Rn, then one of the following holds:
There exist a, p, q, c ∈ U and λ ∈C such that F(x) = ax + xp + λx, G(x) = px + xq and d(x) = [c, x] for all x ∈ R, with [c, a ? q] = 0 and f(x1,…, xn)2 is central valued on R;
There exists a ∈ U such that F(x) = xa and G(x) = ax for all x ∈ R;
There exist a, b, c ∈ U and λ ∈C such that F(x) = λx + xa ? bx, G(x) = ax + xb and d(x) = [c, x] for all x ∈ R, with b + αc ∈ C for some α ∈C;
R satisfies s4 and there exist a, b ∈ U and λ ∈C such that F(x) = λx + xa ? bx and G(x) = ax + xb for all x ∈ R;
There exist a′, b, c ∈ U and δ a derivation of R such that F(x) = a′x + xb ? δ(x), G(x) = bx + δ(x) and d(x) = [c, x] for all x ∈ R, with [c, a′] = 0 and f(x1,…, xn)2 is central valued on R.
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Mikhail A. Chebotar 《代数通讯》2013,41(12):4339-4344
Let R be a 2-torsion free commutative ring with identity, and δ a nonzero derivation of R such that R is δ-prime. Then Rδ is a prime Lie ring and any nonzero ideal of Rδ contains an ideal of the form Jδ where J is a nonzero δ-ideal of R. 相似文献
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通过由模糊点生成的模糊理想给出了半单半群的刻画。同时也刻画了两类半群:一类是所有模糊理想是素理想。另一类是所有模糊理想为安全素理想。 相似文献
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Fuzzy半群中的Fuzzy素理想 总被引:2,自引:2,他引:2
探讨Fuzzy半群中Fuzzy素理想,Fuzzy 完全理想与Fuzzy理想的根的一些代数性质,证明Fuzzy半群中每一个Fuzzy理想是Fuzzy完全半素理想当且仅当它可表为一族Fuzzy完全素理想之交。 相似文献
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Let R be a noncommutative prime ring, U be the left Utumi quotient ring of R, and k, m, n, r be fixed positive integers. If there exist a generalized derivation G and a derivation g (which is independent of G) of R such that [G(xm)xn + xng(xm), xr]k = 0, for all x ∈ R, then there exists a ∈ U such that G(x) = ax, for all x ∈ R. As a consequence of the result in the present article, one may obtain Theorem 1 in Demir and Argaç [10]. 相似文献