supported by Science Fund for Creative Research Groups of National Natural Science Foundation of China (No.10121101);National Basic Research Program of China(Grant No.2006CB805901)
By establishing the intrinsic super-Poincar'e inequality,some explicit conditions are presented for diffusion semigroups on a non-compact complete Riemannian manifold to be intrinsically ultracontractive.These conditi...
Supported in part by Creative Research Group Fund of the National Natural Science Foundation of China (No. 10121101);the "985" Project from the Ministry of Education in China
The stochastic comparison and preservation of positive correlations for Levy-type processes on R^d are studied under the condition that Levy measure v satisfies f{0〈|z|≤1)|z||v(x, dz) - v(x, d(-z))| 〈 ...
the Creative Research Group Fund of the National Natural Science Foundation of China (No.10121101);the"985"Project from the Ministry of Education of China
The aim of this paper is to study the spectral gap and the logarithmic Sobolev constant for continuous spin systems. A simple but general result for estimating the spectral gap'of finite dimensional systems is given ...
the National Natural Science Foundation of China (Grant No.10121101)
In this paper,the small time limit behaviors for an immigration super-Brownian motion are studied,where the immigration is determined by Lebesgue measure.We first prove a functional central limit theorem,and then stud...
Research supported in part by RFDP(No 20010027007);973 Project;NSFC(No 10121101,No 10025105 and No 10301007)
In this paper, we study the supercontractivity for Maxkov semigroups and obtain some sufficient and necessary conditions; especially explicit formulae are obtained for birth-death process and diffusion on the line. Su...