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On an estimate in the subspace perturbation problem. http://t.co/AxOUbugqJ5
On an estimate in the subspace perturbation problem. http://t.co/AxOUbugqJ5
Albrecht Seelmann : On an estimate in the subspace perturbation problem http://t.co/8sImZRo80I
On an estimate in the subspace perturbation problem. (arXiv:1310.4360v1 [math.SP]) http://t.co/XGrZq6bWIV