2) extensions of partial order
偏序扩张
1.
In this paper, we mainly study extensions of partial order and finitely totally order for partially ordered semirings, and obtain some new results.
本文主要研究了偏序半环的偏序扩张和有限全序扩张,并得到了一些新的结果。
3) Unlimited Sprawl
无序扩张
4) Smart Sprawl
有序扩张
1.
Study on Indicator System for Judging Land Smart Sprawl in Small Town;
小城镇用地有序扩张的评判指标体系研究
5) semi-pseudoorder extension
半拟序扩张
6) order extension principle
序扩张原则
1.
The following results are obtained:(1)the set P(X) of all partially ordered relations on X is atomic and arithmetic complete semilattice under the order of set inclusion ,and maximal elements,chains and meet irreducible elements coincide in (P(X),);(2)if |X|>2,then (P(X),) is not coditional distributive;(3) in the set theory ZF+the order extension principle,the set of meet.
证明了:(1)给定集X上的偏序关系全体P(X)在包含序下为原子的算术的完备交半格,其极大元等同于全序关系,也等同于交既约元;(2)当|X|>2时,(P(X),)不满足条件分配律;(3)在公理系统“ZF+序扩张原则”中,P(X)是交既约元生成的,并对传递关系和拟序关系进行了类似的讨论。
补充资料:极大扩张和极小扩张
极大扩张和极小扩张
maximal and minimal extensions
极大扩张和极小扩张匡.习的司出目.公油抽lex妇心.旧;MaKcl.Ma刀‘.oe H Mll.”M田.妇oe PaC山一Pe皿朋] 一个对称算子(s笋nr贺苗c opemtor)A的极大扩张和极小扩张分别是算子牙(A的闭包,(见闭算子(cfo“月。详mtor”)和A’(A的伴随,见伴随算子(呐。int opera.tor)).A的所有闭对称扩张都出现在它们之间.极大扩张和极小扩张相等等价于A的自伴性(见自伴算子(义休.adjoint operator)),并且是自伴扩张唯一性的必要和充分条件.A.H.J’Ior朋oB,B.c.lll户、MaR撰
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