Integral equations and operator theory. 2008;62(1):11-28. doi: 10.1007/s00020-008-1613-6 Q21.02025

Metric Properties of Projections in Semi-Hilbertian Spaces

半希尔伯特空间中投影的度量性质

DOI: 10.1007/s00020-008-1613-6

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