Half-Sided Translations and tye Type of von Neumann Algebras
Half-Sided Translations and tye Type of von Neumann Algebras
复制标题
冯·诺依曼代数的半边平移和类型
DOI:
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发表时间:
1998
期刊:
影响因子:
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通讯作者:
H. Borchers
中科院分区:
文献类型:
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作者:
H. Borchers
Let M be a von Neumann algebra acting on a Hilbert space H and Ω∞ H a cyclic and separating vector for M. If there exists a half-sided translation for M, i.e. a continuous unitary group U(t) with U(t)Ω=Ω, a non-negative spectrum fulfilling Ad U(t)M ⊂ M for t≥ 0 (or ≤ 0), then we will show that either M is of type III1 or U(t) is trivial.