(λ,μ)Vague群

进一步研究Vague群。首先,给出Vague集和Vague群的几个性质;其次,引入(λ,μ)Vague群、(λ,μ)Vague正规群、(λ,μ)Vague正规化子、(λ,μ)Vague中心化子的概念,研究了它们的一些等价条件和在同态条件下像与原像的性质。     

On two-sided and asymptotic estimates for the norms of embedding operators of into L q (dμ)

Explicit upper and lower estimates are given for the norms of the operators of embedding of , n ∈ ?, in L _q (dµ), 0 < q < ∞. Conditions on the measure µ are obtained under which the ratio of the above estimates tends to 1 as n → ∞, and asymptotic formulas are presented for these norms in regular cases. As a corollary, an asymptotic formula (as n → ∞) is established for the minimum eigenvalues λ_{1, n, β} , β > 0, of the boundary value problems (?d ²/dx ²) ⁿ u(x) = λ|x| ^β?1, x ∈ (?1, 1), u ^(k)(±1) = 0, k ∈ {0, 1, ..., n ? 1}.     

(λ,μ)-反模糊子环和(λ,μ)-反模糊理想

引入(λ,μ)-反模糊子环及各种(λ,μ)-反模糊理想的概念,得到了(λ,μ)-反模糊子环及各种(λ,μ)-反模糊理想的等价条件及其性质,建立了同态映射下(λ,μ)-反模糊子环及各种(λ,μ)-反模糊理想的对应定理。     

Smoothness and asymptotics of global positive branches of Δu+λf(u)=0

The smallest eigenvalue of v+ f(0)v=0 gives rise to a global positive branch of u+ f(u)=0 in ² together with homogeneous Dirichlet boundary conditions (f(0)=0,f(0)0). The theory, however, guarantees only that this branch is a continuum. We present a result that in a reasonably large class of problems this branch is actually an unbounded smooth curve. In the second part we study the asymptotic behavior of this positive smooth curve whenf has exponential growth. All results apply also to branches emanating at higher eigenvalues. As shown in [7] they have a fixed nodal structure when restricted to appropriate fixed-point spaces.Dedicated to Prof. Klaus Kirchgässner on the occasion of his sixtieth birthday     

布尔代数的(λ,μ)模糊子代数

在布尔代数中引入了(λ,μ)-模糊子代数的概念,讨论了布尔代数的(λ,μ)模糊子代数的性质.证明了布尔代数的两个(λ,μ)-模糊子代数交与直积也是(λ,μ)-模糊子代数.     

关于(λ,μ)的乘积定理

本文证明了无穷矩阵算子代数（λ,μ）在左（右）强、Ｋ收敛意义下的乘积定理成立,给出了（λ,μ）在弱收敛意义下乘积定理成立的充要条件。     

(λ,μ)直觉模糊子环(理想)

在直觉模糊集理论的基础上,首先引入了(λ,μ)直觉模糊子环和(λ,μ)直觉模糊理想的概念,讨论了它们的相关性质;其次在环同态的意义下,研究了(λ,μ)直觉模糊子环和(λ,μ)直觉模糊理想的同态像及其逆像.     

半群中的(λ,μ)-模糊素理想与(λ,μ)-模糊准素理想

利用(λ,μ)-截集,在一个半群中引入了(λ,μ)-模糊素理想、模糊半素理想、模糊准素理想与模糊半准素理想的概念,研究了他们的运算性质,并得到了他们的一些等价条件。     

(λ,μ)-模糊子群的运算

给出了(λ,μ)-模糊子群和正规子群的有关性质,讨论了(λ,μ)-模糊子群的交、积、逆以及余等运算的相关性质。     

Isomorphic embedding of ℓ p n , 1<p<2, into ℓ 1 (1+ε)n

In this paper we partially answer a question posed by V. Milman and G. Schechtman by proving that ℓ _p ⁿ , (C logn)^1/q(1+1/ε)-embeds into ℓ ₁ ^(1+ε)n , where 1<p<2 and 1/p+1/q=1. Supported by ISF.     

微分方程-u"=λ2u+f(u,u')边值问题无穷多解的存在性

考虑一类边值问题-u"=λ2u+f(u,u'),u(0)=u(1)=0,其中λ＞0为参数.在满足一定条件下,得到了无穷多解的存在性,并进一步研究了有关正解,负解的存在性及变号解的零点个数.     

General constructions of c-Bhaskar Rao designs and the (c,λ) spectrum of a c-BRD(v,k,λ)

New constructions of Bhaskar Rao designs (BRDs) and new families of c-BRDs are given using the relationship of BRDs to other combinatorial structures. For example, we use different families and their properties in various ways to obtain natural signings of BIBDs in order to construct c-BRDs. We investigate the extreme possibilities for c relative to λ, and k relative to v, and prove the non-existence of an infinite series of designs. We also give a symmetricized version of Ehlich's Hadamard construction.     

Δ2u=λu+(uN+4－N-4)+μf(x)的多解存在性

讨论了非齐次双调和方程边值问题{Δ2u=(入u)+(uN+4－N-4)+(uf)(x),x∈Ω,u|(аΩ)=Δu|(аΩ)=0,的两个正解的存在性和非存在性.这里Ω是RN内有界光滑区域,N>4,λ∈R1,μ≥0,f(x)是非负连续函数.     

半群中的(λ,μ)-模糊理想(英文)

在半群中给出了(λ,μ)-模糊子半群和各种(λ,μ)-模糊理想的概念,讨讹了它们的一些性质,并给出了各种(λ,μ)-模糊理想的充分必要条件.     

方程△u+|u|~(p-1)u+λu=0的径向解的一些注记

当n≥7时,已经证明对任意的λ∈(0,λ_1)以及任意整数k≥0,R~n中的单位球B(0,1)上的方程⊿u+|u|~(p-1)u+λu=0在H_0~1(B(0,1))中必有一个径向解具k个结点。本文证明当3≤n≤6时这一结果不再成立。还讨论了上述方程径向正解的唯一性。     

环的(λ,μ)-反模糊同态

在(λ,μ)-反模糊子环与(λ,μ)-反模糊理想概念的基础上,利用(λ,μ)-模糊映射给出了环的(λ,μ)-反模糊同态的定义,进而探讨了(λ,μ)-反模糊同态下(λ,μ)-反模糊子环与(λ,μ)-反模糊理想的对应关系,最后建立了环的(λ,μ)-反模糊同态基本定理。     

(λ,μ)-反模糊同态的研究

在(λ,μ)-反模糊子群概念的基础上,讨论了(λ,μ)-反模糊子群的有关性质。给出了(λ,μ)-反模糊映射,建立了(λ,μ)-反模糊同态,最终得到了(λ,μ)-反模糊同态定理。     

(λ,μ)-反模糊子群的研究

基于(λ,μ)-反模糊子群概念及其基本性质,深入刻画了(λ,μ)-反模糊子群以及(λ,μ)-反模糊正规子群的结构.首先讨论了群G的(λ,μ)-反模糊子群在G的不同元素上隶属度的分布情况,其次研究了(λ,μ)-反模糊正规子群在G的不同元素上隶属度的分布情况,最后对循环群和阿贝尔群上(λ,μ)-反模糊子群及正规子群的结构进行详细讨论并给出了相应的结果.