Vecteurs totalisateurs d'une algèbre de von Neumann
Vecteurs totalisateurs d'une algèbre de von Neumann
复制标题
冯·诺依曼代数总计向量
DOI:
10.1007/bf01651583
复制
发表时间:
1971
影响因子:
2.4
通讯作者:
O. Maréchal
中科院分区:
文献类型:
--
作者:
J. Dixmier;O. Maréchal
We prove that the set of cyclic vectors for a von Neumann algebra in a Hilbert spaceH is aGδ set, which is empty or dense. We obtain some corollaries, for instance: if (A1,A2 ...) is a sequence of von Neumann algebras inH, and if eachAn has a cyclic vector and a separating vector, then there exists a vector inH which is cyclic and separating for eachAn. For algebras of local observables, we improve the known results connecting the infinite type of the algebras and the existence of cyclic and separating vectors.