Supported by 973 Programs(Grant Nos.2013CB834201 and 2011CB302401);the National Science Foundation of China(Grant No.11071003);the Chang Jiang Scholars Program of China
In geometry, there are several challenging problems studying numbers associated to convex bodies. For example, the packing density problem, the kissing number problem, the covering density problem, the packing-coverin...
Supported partially by the National 973 Programs (Grant No. 2006CB805905)
The main result of this paper is that any two non-isomorphic indecomposable modules of a cluster-tilted algebra of finite representation type have different dimension vectors. As an application to cluster algebras of ...
supported by Major State Basic Research Development Program of China (973 Project) (Grant No.2006CB805904);Natural Sciences and Engineering Research Council of Canada (Grant No.122059-200)
For a graph G =(V,E),a subset VS is a dominating set if every vertex in V is either in S or is adjacent to a vertex in S.The domination number γ(G) of G is the minimum order of a dominating set in G.A graph G is said...
supported by the National Natural Science Foundation of China(Grant Nos 70801066,60674048,60772053 and 60672142);the National Basic Research Program of China(Grant Nos 2007CB307100 and 2007CB307105)
In this paper we will give the statistical characteristics and general principles of an optimal structure of the Internet, which is a scale-free network. Since the purpose of the Internet is to allow fast and easy com...
supported by the 973 Program;the National Natural Science Foundation of China (GrantNo. 10531060);Ministry of Education of China (Grant No. 305009);The second author was supportedby the National Security Agency of USA (Grant No. H98230-06-1-0075);The United States government isauthorized to reproduce and distribute reprints notwithstanding any copyright notation herein.
We compute the n-level correlation of normalized nontrivial zeros of a product of Lfunctions: L(s, π1) … L(s, π k ), where πj, j = 1, …, k, are automorphic cuspidal representations of GL mj (?A). Here the sizes o...
Supported by the National Natural Science Foundation of China under Grant No 10533010, the National Basic Research Programme of China under Grant No 2007CB815401, and the Programme for New Century Excellent Talents in University of China. We thank Yi-Fu Cai and Yin-Zhe Ma for helpful discussions. We are also grateful to Neven Bilid, Gary Tupper and Raoul Viollier for pointing out some misunderstandings.
The weak gravity conjecture is proposed as a criterion to distinguish the landscape from the swampland in string theory. As an application in cosmology of this conjecture, we use it to impose theoretical constraint on...