Topology and its Applications ( IF 0.6 ) Pub Date : 2021-03-30 , DOI: 10.1016/j.topol.2021.107673 Jean Goubault-Larrecq
We show that the space of subprobability measures, equivalently of subprobability continuous valuations, on an algebraic (resp., continuous) complete quasi-metric space is again algebraic (resp., continuous) and complete, when equipped with the Kantorovich-Rubinstein quasi-metrics (unbounded) or (bounded), themselves asymmetric forms of the well-known Kantorovich-Rubinstein metric. We also show that the -Scott and the -Scott topologies then coincide with the weak topology. We obtain similar results for spaces of probability measures, equivalently of probability continuous valuations, with the quasi-metrics, or with the quasi-metric under an additional rootedness assumption.
中文翻译:
坎托罗维奇-鲁宾斯坦准度量I:度量空间和连续估值
我们证明,当配备了Kantorovich-Rubinstein准方程时,在代数(分别为连续的)完全拟度量空间上,子概率测度的空间(等同于子概率连续计价)又是代数的(分别为连续的)且是完备的。指标 (无界)或 (有界),它们本身是众所周知的Kantorovich-Rubinstein度量的不对称形式。我们还表明-斯科特和 然后,Scott拓扑与弱拓扑重合。对于概率测度空间,我们获得了相似的结果,等效于概率连续估值,其中 准度量,或与 附加生根假设下的准度量。