This paper gives a systematic study of Riesz bases of multivariate translates derived from a fixed compactly supported multivariate function in a Sobolev space.Starting with a multivariate function φ satisfying a ver...This paper gives a systematic study of Riesz bases of multivariate translates derived from a fixed compactly supported multivariate function in a Sobolev space.Starting with a multivariate function φ satisfying a very mild condition in Sovolev space Hs(Rd),we provide a necessary and sufficient condition under which {φ(x-n)}n∈Zd is a Riesz basis for span{φ(x-n)}n∈Zd.展开更多
基金supported by National Science Foundation of China (10871217)Guangxi Natural Science Foundation(0542046)The fund of Guilin University of Electronic Technology(Z20710)
文摘This paper gives a systematic study of Riesz bases of multivariate translates derived from a fixed compactly supported multivariate function in a Sobolev space.Starting with a multivariate function φ satisfying a very mild condition in Sovolev space Hs(Rd),we provide a necessary and sufficient condition under which {φ(x-n)}n∈Zd is a Riesz basis for span{φ(x-n)}n∈Zd.
