Let Mn be a smooth closed n-manifold with a locally standard （Z2）n-action. This paper deals with the relationship among the rood 2 Betti numbers of Mn, the mod 2 Betti numbers and the h-vector of the orbit space of ...Let Mn be a smooth closed n-manifold with a locally standard （Z2）n-action. This paper deals with the relationship among the rood 2 Betti numbers of Mn, the mod 2 Betti numbers and the h-vector of the orbit space of the action.展开更多
In this paper, we classify the set of Lorentzian metrics on T2, analyse the topological structure of some subclasses and study whether a subclass could admit certain weak solutions to the eikonal equations.
基金supported by the National Natural Science Foundation of China(No.10931005)the Research Fund for the Doctoral Program of Higher Education of China(No.20100071110001)
文摘Let Mn be a smooth closed n-manifold with a locally standard （Z2）n-action. This paper deals with the relationship among the rood 2 Betti numbers of Mn, the mod 2 Betti numbers and the h-vector of the orbit space of the action.
基金Both authors are supported by the National Natural Science Foundation of China(Grant Nos.11271181 and11571166)the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)+1 种基金the Fundamental Research Funds for the Central UniversitiesThe second author is also supported by the National Natural Science Foundation of China(Grant No.11631106)
文摘In this paper, we classify the set of Lorentzian metrics on T2, analyse the topological structure of some subclasses and study whether a subclass could admit certain weak solutions to the eikonal equations.
