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
WEI YUAN
中科院分区:
数学3区
文献类型:
--
作者:
AIJU DONG;WENMING WU;WEI YUAN

文献摘要

被引文献

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本文研究了Hilbert空间中子空间构成的双三角格的自反性和传递性。我们表明,双三角形格既不是自反的,也不是传递的一些可逆性条件满足(下的投影的限制)。在这种情况下,我们证明了由双三角形格确定的自反格包含无穷多个投影,这部分回答了Halmos关于Hilbert空间中的子空间的小格的一个问题。
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.