Integral equations and operator theory. 2005;52(1):125-134. doi: 10.1007/s00020-003-1274-4 Q21.02025

Fredholm Properties of the Difference of Orthogonal Projections in a Hilbert Space

希尔伯特空间中正交投影之差的弗雷德霍姆性质

DOI: 10.1007/s00020-003-1274-4

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