基于连续值逻辑上的不分明化拓扑线性空间

在连续逻辑的语义框架下,我们给出了不分明化拓扑线性空间的概念,讨论了零元平衡邻域系的结构和性质,并在不分明化拓扑线性空间中给出不分明化凸集的代数与拓扑性质。     

不分明化拓扑中强紧性

在不分明化拓扑空间中,从pre-开集出发引入了强紧性的概念,并且给出了它的一些性质.这些概念的结合有助于我们对不分明化拓扑的研究.     

不分明化sp-拓扑空间及范畴FSPTop的拓扑性

基于连续逻辑值语义,研究了不分明化sp-拓扑空间,讨论了不分明化的sp-开集,sp-邻域,sp-闭包及sp-内部等性质,给出了不分明化sp-连续映射的概念,引入了范畴FSPTop,证明了范畴FSPTop是范畴Set上的拓扑范畴。     

不分明化拓扑中的SS-紧性

利用连续值逻辑的语义方法将强半开集的概念引入到不分明化拓扑空间中,并由此出发给出了不分明化拓扑空间中SS-紧性,进而讨论了其性质.     

不分明化拓扑中近似紧性和几乎紧性

在不分明化拓扑空间中,从正则开集出发引入了近似紧性和几乎紧性的概念,并且给出了它们的一些性质.这些概念的结合有助于我们对不分明化拓扑的研究。     

不分明S－闭空间

文［１］给出了不分明Ｓ－闭空间定义，本文仿照良紧性定义给出了另外一种不分明Ｓ－闭空间定义，证明了在Ｕｒｙｓｏｈｎ空间中两种定义的等价性，而且本文还得到关于Ｓ－闭空间的几个等价条件。     

Fuzzy集论中邻属关系的分析

重域系构造在不分明拓扑的研究中已取得相当的成功,在文献[6]中我们给出了几组互相等价的公理系,从拓扑学与 Fuzzy 集论角度刻划了重域系构造.因为不分明拓扑空间中邻近构造是由不分明点与不分明集之间的邻属关系决定的,本文就从 Fuzzy 集论角度分析这个邻属关系.我们给出了直观且比较明显的四条原则并证明满足这些原则的唯一的邻属关系就是相重关系.这个相重关系在不分明拓扑学中相应于重域系构造.     

Fuzzy拓扑共生预序空间

文[1]给出了研究拓扑空间,邻近空间,一致空间的统一化理论的方法,提出了拓扑共生结构的概念。文[3,4]引入了Fuzzy拓扑共生结构,初步研究了Fuzzy拓扑,Fuzzy邻近结构,Fuzzy一致结构的统一化问题,文[5]讨论了Fuzzy拓扑共生结构生成     

概率度量空间中的不分明化拓扑结构

本文引入不分明化 V_D-空间和线性 V_D-空间的概念并以其为工具刻划 PM 空间的拓扑结构和 PN 空间的线性拓扑结构.     

容有半对称度量联络的广义复空间中子流形上的Chen-Ricci不等式

本文研究了容有半对称度量联络的广义复空间中的子流形上的Chen-Ricci不等式.利用代数技巧,建立了子流形上的Chen-Ricci不等式.这些不等式给出了子流形的外在几何量-关于半对称联络的平均曲率与内在几何量-Ricci曲率及k-Ricci曲率之间的关系,推广了Mihai和Özgür的一些结果.     

Two-Step Nilpotent Lie Groups and Homogeneous Fiber Bundles

In this paper, we construct two-step nilpotent Lie groups from homogeneous fiber bundles over compact symmetric spaces. The structure of the constructed nilpotent groups is expressed in terms of the compact Lie groups involved in the fiber bundles. There are close relations between the geometric properties of the nilpotent groups and the total spaces of the fiber bundles. We will find new examples of nilpotent groups which are weakly symmetric and Riemannian geodesic orbit spaces.     

Interpolation of Herz Spaces and Applications

C. Herz introduced in [Hr] some new spaces to study properties of functions. An Interesting account, with many applications, of some particular cases of the generalized Herz spaces is given in [BS]. In this paper we first identify the duals of the generalized Herz spaces. Then, we characterize their intermediate spaces when the complex method of interpolation for families of spaces Is used. Applications are given that show the bounded ness of many operators on the generalized Herz spaces.     

Completeness of quasi-normed symmetric operator spaces

We show that (generalized) Calkin correspondence between quasi-normed symmetric sequence spaces and symmetrically quasi-normed ideals of compact operators on an infinite-dimensional Hilbert space preserves completeness. We also establish a semifinite version of this result.     

Common fixed point theorems for expansion mappings in various spaces

We prove expansion mappings theorems in various spaces i.e., metric spaces, generalized metric spaces, probabilistic metric spaces and fuzzy metric spaces, which generalize the results of various authors like Daffer and Kaneko [11], Ahmad, Ashraf and Rhoades [1], Vasuki [38], Rhoades [31] and Wang, Li, Gao and Iseki [40] etc. In the memory of 65^th birthday anniversary of his Father Late Sh. Ram Phool Sharma     

Geometric properties of homogeneous parabolic geometries with generalized symmetries

We investigate geometric properties of homogeneous parabolic geometries with generalized symmetries. We show that they can be reduced to a simpler geometric structures and interpret them explicitly. For specific types of parabolic geometries, we prove that the reductions correspond to known generalizations of symmetric spaces. In addition, we illustrate our results on an explicit example and provide a complete classification of possible non-trivial cases.     

On generalized symmetric Finsler spaces

In this paper, we study generalized symmetric Finsler spaces. We first study some existence theorems, then we consider their geometric properties and prove that any such space can be written as a coset space of a Lie group with an invariant Finsler metric. Finally we show that each generalized symmetric Finsler space is of finite order and those of even order reduce to symmetric Finsler spaces and hence are Berwaldian.     

Characterizations of Kadec-Klee properties in symmetric spaces of measurable functions

We present several characterizations of Kadec-Klee properties in symmetric function spaces on the half-line, based on the -functional of J. Peetre. In addition to the usual Kadec-Klee property, we study those symmetric spaces for which sequential convergence in measure (respectively, local convergence in measure) on the unit sphere coincides with norm convergence.

     

On some results of analysis for fuzzy metric spaces

A necessary and sufficient condition for a fuzzy metric space to be complete is given. We prove that a subspace of a separable fuzzy metric space is separable and every separable fuzzy metric space is second countable. Uniform limit theorem is generalized to fuzzy metric spaces.