高校应用数学学报B辑
高校應用數學學報B輯
고교응용수학학보B집
APPLIED MATHEMATICS A JOURNAL OF CHINESE UNIVERSITIES
2002年
4期
465-472
,共8页
convolution semigroup%invariant measure%Martin boundary%quasi-symmetry
In this article the notion of quasi-symmetry is introduced.It is proved that the quasi-symmetry is equivalent to the uniqueness of invariant measure of Lévy processes in some sense.Moreover,the relationship between ratio limits and invariant measures is studied.
