半序模的 O-张量积与自由 f-模

在假定R是全序Ore环,M_1、M_2是R 上的半序模,M_1■M_2 是模M_1、M_2的张量积,M_1■M_2是平凡序半序模M_1与半序模M_2的O-张量积,F_(M_1■M_2)是平凡序半序模M_1■M_2上的自由f-模的情形下,本文证明了F_(M_1■M_2)=M_1■_0M_2.

多序半群与多序半模的性质及应用

以具有多种序结构的Minkowski空间为原空间,以单序半群理论为理论基础,抽象出多序半群与多序半模(多序半线性空间)等概念,并用于讨论数学与物理中的问题.主要研究内容为:引入多序半群及多序半线性空间的概念,并给出实例;由多序半群与多序半模(多序半线性空间)的概念为基础概念,引入多内积空间与多距离空间的概念,讨论Minkowski空间的几何性质,在Minkowski空间中引入与狭义相对论力学两个基本假设相容的多序邻域概念,讨论Minkowski空间的分析性质.

Exact Sequence and Commutative Diagrams of Semimodule Homomorphism

Throught the introduction of the concept * exact sequence,we set up several satisfied results of commutative diagrams of semimodule homomorphism.

Fuzzy Ordered Filters in Implicative Semigroups

We fuzzify the concept of ordered filter in implicative negatively partially ordered semigroups and study its properties.

The Semimodularity of Cardinal Power of Posets

Let X,Y be any posets,the semimodularity of cardinal power Yx with base Y and exponent X is studied. Some necessary or sufficient conditions for Yx to be semimodular are gaven,