1) θ-invariant closed set
θ-不变闭子集
2) θ-invariant set
θ-不变子集
3) θ-closed set
θ-闭集
1.
By θ-open sets and θ-closed sets,the notions of θ-bitopological space and a new compactness called θ-pairwise compactness are introduced in L-bifuzzy topological space.
以θ-开集和θ-闭集为工具,在L-双fuzzy拓扑空间中引入双θ-拓扑空间及一种新的紧性,即θ-配紧性,揭示了θ-配紧性与B-配紧性之间的联系。
4) θ-closed
θ一闭集
1.
In this paper,θ- open and θ-closed are introduced in Topological spaces.
本文在拓扑空间中引入θ一开集与θ一闭集的概念,讨论了T2空间和正则空间的性质,得到了拓扑空间是T2空间当且仅当每一单点集是θ一闭集以及拓扑空间是正则空间当且仅当每一闭集是θ一闭集。
5) θ-open(closed)set
θ-开(闭)集
6) closed invariant set
闭不变集
1.
When Liapunov function is Lipschitz continuous and regular,Liapunov theorem on finite-time stability with respect to a closed invariant set was presented.
主要研究右端不连续系统在Filippov解意义下关于闭不变集(未必是紧集)的有限时间稳定问题。
补充资料:不变子集
不变子集
mvariant subset
不变子集汇加粕雌阴亡即肠以;H.即“明.oe邢脚助狱ec-,0],群G的 G的子集H,它包含它的每个元素h在G中的所有共辘元(conj贝势te ekn笠幻t),即所有形为g一’hg的元素.不变子半群(invanani sub一~·group)是一.压忍葱胜到厉价周落玉耳蕊胃.
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