(t+1)×7类模糊错误矩阵包含型集合方程求解方法研究

在前期研究的基础上,对错误矩阵的概念作一个介绍,在此基础上,研究模糊错误矩阵方程的类型,且对于矩阵的每一行又恰好是一个模糊错误逻辑命题这种类型的模糊错误矩阵方程求解,由研究发现XA′的运算结果可得到A x′_1的运算结果等同于Ax′_1=A∧[x′_1,x′_1,…,x′_1]′,所以XAB模糊错误矩阵集合方程XA′=B的求解的方法可以得到改善.最后给出了一个求解的例子.     

二类5包含型错误矩阵集合方程求解研究

在错误矩阵的基础上,提出了错误矩阵方程的类型.研究了当构成错误矩阵的元素是集合,且对于矩阵的每一行又恰好是一个错误逻辑命题的分解,这一类错误矩阵方程解的存在性,求解的方法等,并通过实例加以论证说明.     

基于空间分解变换的模糊错误矩阵方程求解

模糊错误逻辑对现实世界的对象用(u,x)表示为((U,S(t),■T(t),L(t)),(x(t)=f((u(t),■),GU(t)),GU(t)),用模糊错误变换矩阵可以表示分解、相似、增加、置换、毁灭、单位变换等6种变换方法,本论文基于求解方程XA′=B,针对■的分解,研究了基于空间分解变换的错误矩阵方程求解。以期从矩阵方程求解的角度对错误转化规律进行探索研究。     

模糊错误二类1矩阵方程实解的存在性及其解法

本文在文（７）的基础上研究了模糊错误二类１矩阵方程实解的存在性和它的基本求解方法。     

基于空间错误逻辑变量未知的对象识别状态与应该状态之间的转化

讨论了在错误逻辑变量中,论域、事物、特征、量值等参数为确定常量的条件下,讨论空间参数为变量且未知时,错误的识别状态转化为应该状态的方程及其求解。研究发现,当对象识别状态当前的空间包含于应该状态当前的空间时,可以采用错误矩阵一类5集合方程A∧X_(qg)?B_g构建错误矩阵集合方程求解;当对象应该状态当前的空间包含于识别状态当前的空间时,可以采用错误矩阵一类4集合方程A∨X_(qg)?B_g构建一元置换变换错误矩阵集合方程,求解识别状态和应该状态的转化。     

说三道四话空集

<正>进入高中学习,高中数学的第一个内容是集合,对我们初学者来说,集合中空集是我们较难对付的概念.在解决集合中有关的问题时,特别是求参数范围时,常常由于少考虑到空集这个因素,使得问题的求解变得不完整,甚至出现错误.可以这样说这类问题的求解错     

说三道四话空集

进入高中学习,高中数学的第一个内容是集合,对我们初学者来说,集合中空集是我们较难对付的概念．在解决集合中有关的问题时,特别是求参数范围时,常常由于少考虑到空集这个因素,使得问题的求解变得不完整,甚至出现错误．可以这样说这类问题的求解错误都是空集惹的祸．     

矩阵方程XA+YB=C的对称次反对称解及最佳逼近

探讨了矩阵方程XA+YB=C存在对称次反对称解的条件及解的表达式.利用矩阵分解,给出了方程有解的充要条件和解的解析表达式.在矩阵方程的解集合中,利用Frobenius-矩阵范数正交不变性获得了给定矩阵的最佳逼近解的表达式,并建立了相应的数值算法.     

基于Ph,e下Riemann-Liouville分数阶微分方程解的存在唯一性

利用基于集合P_h,e上的一类混合单调算子不动点定理,研究了一类Riemann Liouville分数阶微分方程两点边值问题,获得了这类方程在集合P_h,e中解的存在性与唯一性,并用一组单调迭代序列逼近了该方程的唯一非平凡解.最后,利用一个实例验证了主要结论.     

四元数体上的矩阵方程

<正> 如所周知,矩阵方程是矩阵研究中的重要方向之一,但四元数体上的矩阵方程的研究至今仍然少见.注意到四元数矩阵研究的新近进展,本文对此作了一些研究,主要目的是阐述上矩阵方程AX=B的正定自共轭解、矩阵方程AX+XA=B与     

关于循环子半群的结构与数量问题及拟环的特征与结构

彻底解决了所有循环半群及其子群的结构和数量问题,并讨论了拟群分解问题,同时,对群论基本定理作了部分推广,并给出了定理的另一部分不可推广的反例,最后,建立了一类特殊环－拟环。     

Rigidity and stability of the Leibniz and the chain rule

We study rigidity and stability properties of the Leibniz and chain rule operator equations. We describe which non-degenerate operators V, T ₁, T ₂,A: C ^k (?) → C(?) satisfy equations of the generalized Leibniz and chain rule type for f, g ∈ C ^k (?), namely, V (f · g) = (T ₁ f) · g + f · (T ₂ g) for k = 1, V (f · g) = (T ₁ f) · g + f · (T ₂ g) + (Af) · (Ag) for k = 2, and V (f ○ g) = (T ₁ f) ○ g · (T ₂ g) for k = 1. Moreover, for multiplicative maps A, we consider a more general version of the first equation, V (f · g) = (T ₁ f) · (Ag) + (Af) · (T ₂ g) for k = 1. In all these cases, we completely determine all solutions. It turns out that, in any of the equations, the operators V, T ₁ and T ₂ must be essentially equal. We also consider perturbations of the chain and the Leibniz rule, T (f ○ g) = Tf ○ g · Tg + B(f ○ g, g) and T (f · g) = Tf · g + f · Tg + B(f, g), and show under suitable conditions on B in the first case that B = 0 and in the second case that the solution is a perturbation of the solution of the standard Leibniz rule equation.     

On the table and the chair

We find topological models for the tiling dynamical systems corresponding to the chair and table rep-tiles.     

求解一阶隐微分方程的微分法与参数法及奇解注记

主要指出了微分法与参数法的实质及二者的本质区别,以及求奇解的一个注意事项.     

Integrable couplings and Hamiltonian structures of the L-hierarchy and the T-hierarchy

An algebraic system is constructed from which establishes two isospectral problems. By solving the zero curvature equations, two resulting integrable couplings of the Li hierarchy and Tu hierarchy are obtained, respectively. By making use of the quadratic-form identity, the Hamiltonian structures of the above integrable couplings are generated, which are Liouville integrable.     

Soliton-like structures and the connection between the Bq and KP equations

We study the (2+1)-dimensional model proposed by Kadomtsev and Petviashvili (KP) to describe slowly varying nonlinear waves in a dispersive medium. Applying an appropriate Lie transformation and following the method introduced by Tajiri et al., the KP equation is reduced to a one-dimensional equation, that is, to a certain version of the Boussinesq equation (BqE). Then, we solve the BqE by the Hirota method, and finally we use the inverse transformation in order to obtain de KP solutions. We Analyze some remarkable properties of the solutions found in this work.     

On the Cavities and Rigid Inclusions Correspondence and the Cosserat Spectrum

The correspondence in two-dimensional elasticity between the stress fields of cavities and rigid inclusions has been obtained by Dundurs [1] and Markenscoff [3]. It was shown that if the limit of the stress of the inclusion boundary-value problem, which depends on the elastic constants, exists when the Poisson's ratio v tends to 1, then this solves the traction boundary-value problem for the cavity problem since it satisfies equilibrium and boundary conditions, and, by the uniqueness theorem, exists and is unique. In three dimensions the solution of the traction boundary-value problem of elasticity does depend on Poisson's ratio since the Beltrami-Mitchell compatability conditions for the stress depend on Poisson's ratio. So the similar argument for the correspondence between cavities and rigid inclusions cannot in principle be made. However, the Beltrami-Mitchell compatability conditions are independent of v if the dilatation is a constant or a linear function of the position. In this case we can show that the same result goes through for the correspondence. In order to investigate the behavior of the solutions in the vicinity of v = 1, we use some results obtained for the Cosserat spectrum by Mikhlin [4], Maz'ya and Mikhlin [3], see also [6]. The existence of the limit for 2D and 3D when v tends to 1 is proved on the basis of the fact that the eigenvalue ω = — 1 of the Cosserat spectrum is isolated.