F格上的度量问题–第二类度量
Metric Problems on F-Lattices–The Second Metric
摘要:
本文研究了点式一类度量-第二类度量, 通过O
2 − nbd映射簇对它进行了刻画,并进一步证明了它的诱导拓扑和它的余拓扑是一致的。另外,我们还证明了第二类度量是Q − C
I的,最后,证明了L−实直线R(L)满足第二类度量和它的几个球映射的关系。
Abstract:
In this paper, firstly, we investigate a kind of pointwise metric-the second metric, and characterize it by using O2 − nbd mappings. Secondly, we prove that its induced topology is consistent with its cotopology. In addition, we also prove that the second metric is Q − CI. Finally, we assert that L–real line is the second metric, and present the relationships between its several basic spheres.
参考文献
|
[1]
|
Chen, P. (2017) Metrics in L-Fuzzy Topology. China Science Press (Postdoctoral Library), Beijing. (In Chinese)
|
|
[2]
|
Chen, P. and Shi, F.-G. (2007) Further Simplification of Erceg’s Metric and Its Properties. Advances in Mathematics, 36, 586-592. (In Chinese)
|
|
[3]
|
Shi, F.G. (2001) Pointwise Pseudo-Metrics in L-Fuzzy Set Theory. Fuzzy Sets and Systems, 121, 200-216. [Google Scholar] [CrossRef]
|
|
[4]
|
梁基华. 关于不分明度量空间的几个问题[J]. 数学年刊, 1984, 6A(1): 59-67.
|
|
[5]
|
Wang, G.J. (1988) Theory of L-fuzzy Topological Space. Shanxi Normal University Publishers, Xi’an. (In Chinese)
|
|
[6]
|
Hutton, B. (1977) Uniformities on Fuzzy Topological Spaces. Journal of Mathematical Analysis and Applications, 58, 559-571. [Google Scholar] [CrossRef]
|
|
[7]
|
Shi, F.G. (2005) Pointwise Pseudo-Metric on the L-Real Line. Iranian Journal of Fuzzy Sys- tems, 4, 79-88.
|
|
[8]
|
Shi, F.G. and Zheng, C.Y. (2005) Metrization Theorems in L-Topological Spaces. Fuzzy Sets and Systems, 149, 455-471. [Google Scholar] [CrossRef]
|
|
[9]
|
Peng, Y.W. (1993) Simplification of Erceg’s Fuzzy Metric Function and Its Application. Fuzzy Sets and Systems, 54, 181-189. [Google Scholar] [CrossRef]
|
|
[10]
|
Engelking, R. (1977) General Topology. Polish Science Publishers, Warszawa.
|