局部凸空间的正规性

本文建立局部凸拓扑向量空间的正规性、完全正规性和单调正规性的等价条件．作为这些结果的应用，研究了函数空间的单调正规性和可度量性．     

关于正规δθ-可加空间的逆极限

This paper proves the following results: Let X = lim← { Xσ,π^σρ，∧ },| ∧ | =λ, and every pro-jection πσ : X → Xσ be an open and onto mapping. (A) If X is λ-paracompact and every Xσ is normal and δθ-refinable, then X is normal and δθ-refinable; (B) If X is hereditarily λ-pamcompact and every Xσ is hereditarily normal and hereditarily δθ-refinable, then X is hereditarily normal and hereditarily δθ-refiable.     

空间的-特殊点可数族使其为D-空间

本文给出了空间为D-空间的-充分条件,主要结论如下:如果空间X有一点可数族F,满足对X的任-子集A (C) X,若A在X中不闭,都存在某点x ∈-A\A,使得对X的任一开集U,若X∈U,都存在某个F∈F,使得X ∈F(C) U且F ∩ A≠ (θ),则X是D-空间.由此结论,我们得到-序列空间若有点可数cs*-网络,则X是D-空间.     

关于k-半层空间的一些结果

给出了对k-半层空间及c-半层空间的一些等价刻画,并给出kβ空间成为k-半层空间的一些条件.     

D-逻辑度量空间中的相容理论

在D-逻辑度量空间中提出了理论的D-开放度,得出一个理论的D-开放度与它的D-发散度取值相等;提出了理论的D-相容度,得出D-相容度在D-逻辑度量空间中能保持逻辑度量空间中的基本性质.     

空间的一特殊点可数族使其为D-空间

本文给出了空间为D-空间的一充分条件，主要结论如下：如果空间X有一点可数族厂，满足对X的任一子集A X，若A在X中不闭，都存在某点X∈A＼A，使得对X的任一开集U，若X∈U，都存在某个F∈F，使得X∈F U且F∩A≠D，则X是D-空间．由此结论，我们得到一序列空间若有点可数C8^8-网络，则X是D-空间．     

线性层空间的一个刻画

本文利用邻域约定证明了线性层空间是单调正规的,并且从单调正规的角度得到了线性层空间的一个刻画．     

关于弱MCP空间与弱层空间

本文引入了与已知的一些空间类非常类似的两个概念,我们分别称它们为弱MCP空间与弱层空间.本文主要讨论了这两空间类的等价命题与一些基本性质,及它们与原有空间类的关系.     

关于D-半预不变凸性的某些新性质

研究了锥意义下的半预不变凸性的新性质.首先,对彭再云等的文献(彭再云,李科科,唐平,黄应全.向量值D-半预不变真拟凸映射的判定与性质[J].重庆师范大学学报(自然科学版),2014,31(5):18-25.)中的例4进行了修正,使其满足条件E.然后,给出了条件E1的一个重要性质,并在此基础上结合稠密性结果,分别利用D-半严格半预不变真拟凸性和D-严格半预不变真拟凸性建立了D-半预不变凸性的刻画.最后利用D-半预不变真拟凸性给出了D-半预不变凸性的刻画.     

关于用g函数刻画的一些空间

本文研究了强α空间在有限到一的闭映射下的映射性质问题.利用闭映射的等价刻画构造g函数,获得了强α空间在有限到一的闭映射下保持的结果,改进了强α空间在有限到一的既开又闭映射下保持的结果.本文还研究了σ空间的半层对应刻画.     

Products with linear and countable type factors

The basic theorem presented shows that the product of a linearly ordered space and a countable (regular) space is normal. We prove that the countable space can be replaced by any of a rather large class of countably tight spaces. Examples are given to prove that monotone normality cannot replace linearly ordered in the base theorem. However, it is shown that the product of a monotonically normal space and a monotonically normal countable space is normal.

     

Monotone normality and neighborhood assignments

We prove that every neighborhood assignment for a monotonically normal space has a kernel which is homeomorphic to some subspace of an ordinal. As a corollary, every monotone neighborhood assignment for a monotonically normal space has a discrete kernel, which gives a partial answer to a question posed in Buzyakova et al. (2007) [5]. We also give an example of a regular space which has a neighborhood assignment with no kernels homeomorphic to any subspace of an ordinal.     

基与拟基的关系

我们研究了某些基与拟基的关系,证明了空间具有有限秩的基当且仅当它有有限秩的拟基,空间具有正交基当且仅当它有正交的拟基．     

强单调T2空间的几个性质

§1Introduction Theclassofstratifiable(=M3)spacesincludesallmetricspacesandmanytopological groups.Stratifiablespaceholdsmostofthestrongestandusefulpropertiesofmetric space.ThequestionproposedbyCederwhetherstratifiablespaceisM1spaceornotisstill opennow.ManyresearcheshavediscussedthepropertiesofMi(i=1,2,3)spacesthrough monotonenormality(see[2-7]).Borges[6]studiedthemonotonicallynormalproperties,Heath,etal.[5]gavemajorcontributiononmonotonenormality,andBuck,etal.[2]proposedseveraladditionalcha…     

SOME PROPERTIES OF STRONGLY MONOTONICALLY T2 SPACES

This paper investigates Buck＇s question about which class of spaces is strongly monotonically T2,and if other properties are combined with strongly monotonically T2,which class of spaces could be got. Based on having a cushioned pair-base space and compact strongly monotonically T2 space,some results （Theorems 1--3） are obtained.     

关于拓扑对策中的I2(κ)(∈)I(κ)问题

证明了如果空间类K为D-空间类或闭遗传不可约空间类,则I（K）包含K.这一结果对于K为D空间类和闭遗传不可约空间类,肯定地回答了I（K）是否包含I^2（K）问题.     

关于单调亚紧空间

In the first part of this note, we mainly prove that monotone metacompactness is hereditary with respect to closed subspaces and open Fó-subspaces. For a generalized ordered (GO)-space X, we also show that X is monotonically metacompact if and only if its closed linearly ordered extension X* is monotonically metacompact. We also point out that every non-Archimedean space X is monotonically ultraparacompact. In the second part of this note, we give an alternate proof of the result that McAuley space is paracompact and metacompact.     

Some Endpoint Estimates for the Multiplier Operator

In this paper,the author proves that Multiplier operator is bounded on BMO（Rⁿ）,LMO（Rⁿ） and CBMO^ρ,λ（Rⁿ）respectively if some concellation conditions are satisfied.     

关于拓扑对策中的I~2(K)I(K)问题

证明了如果空间类κ为D-空间类或闭遗传不可约空间类,则I(κ)(∈)κ.这一结果对于κ为D空间类和闭遗传不可约空间类,肯定地回答了I(κ)是否包含I2(κ)问题.