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On the closed graph theorem
A. P. Robertson, W. J. Robertson
Citation:
A. P. Robertson, W. J. Robertson, “On the closed graph theorem”, Matematika, 4:6 (1960), 73–78; Proc. Glasgow Math. Assoc., 3 (1956), 9–12
Linking options:
https://www.mathnet.ru/eng/mat164 https://www.mathnet.ru/eng/mat/v4/i6/p73
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