1) σ convexity
σ凸集
2) σ semi convexity
σ半凸集
3) σ-semi-convexity
σ半凸性
1.
In this paper, the σ-semi-convexity is introduced and a general Ekeland s variational principle in locally convex spaces is given.
本文引进了σ半凸性,并给出了局部凸空间中一般的Ekeland变分原理。
4) σ-closed subset
σ-闭子集
6) hereditarily σ-collectionwise normality
σ-集体正规
1.
Hereditarily collectionwise subnormality and hereditarily σ-collectionwise normality of inverse limits;
逆极限的遗传集体次正规性与遗传σ-集体正规性
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