1) preclosed remote neighborhood
准闭远域
2) ω-closed remote neighbourhood
ω-闭远域
3) Closed Remote Neighborhood
闭远域
4) standard closed region
标准闭域
5) Ordered Closed R-neighborhoods
有序闭远域
6) α-regular closed remote family
α-正则闭远域
1.
With α-regular closed remote family,a new paracompactness called *-nearly paracompactness in L-topological spaces was introduced,and was characterized by means of semi-interior.
利用α-正则闭远域族在L-拓扑空间中定义了一种新的仿紧性,即*-拟仿紧性,并用半内部对其进行了刻划。
补充资料:代数闭域
代数闭域
algebraically closed field
代数闭域【aigeb面回lyd姗d云eld“别.‘钾坪长。.3洲-幻乃7T此助月e] 域k.其l二的任何非零次多项式在丸中至少有个根.事实上,由此可推出一个代数闭域k上的任何。次多项式在k中恰有n个根,也即多项式环k【习中任不可约多项式都是一次的.域人是代数闭的,当且仅当它没有真的代数扩张(见域的扩张(extens,on of a field))·任何域k都有唯一的(仅差一同构)代数闭的代数.扩张;称之为k的华攀甲粤(al罗bra,e dosure),通常用k表示.包含人的任何代数闭域都包含一个与万同构的子域. 复数域是实数域的代数闭包.这就是代数学基本定理(algebra,fundamental重heorem of).
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参考词条