摘要:
In this article, a new characterization of the closedness of the sum of two closed subspaces of a Hilbert space is established.
中图分类号:
邓春源; 杜鸿科. A NEW CHARACTERIZATION OF THE CLOSEDNESS OF THE SUM OF TWO SUBSPACES[J]. 数学物理学报(英文版), 2008, 28(1): 17-23.
Deng Chunyuan; Du Hongke. A NEW CHARACTERIZATION OF THE CLOSEDNESS OF THE SUM OF TWO SUBSPACES[J]. Acta mathematica scientia,Series B, 2008, 28(1): 17-23.