ON SMALL SUBSPACE LATTICES IN HILBERT SPACE
ON SMALL SUBSPACE LATTICES IN HILBERT SPACE
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关于希尔伯特空间中的小子空间格子
DOI:
10.1017/s1446788713000384
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发表时间:
2014
影响因子:
0.7
通讯作者:
WEI YUAN
中科院分区:
文献类型:
--
作者:
AIJU DONG;WENMING WU;WEI YUAN
Abstract We study the reflexivity and transitivity of a double triangle lattice of subspaces in a Hilbert space. We show that the double triangle lattice is neither reflexive nor transitive when some invertibility condition is satisfied (by the restriction of a projection under another). In this case, we show that the reflexive lattice determined by the double triangle lattice contains infinitely many projections, which partially answers a problem of Halmos on small lattices of subspaces in Hilbert spaces.