Why is it called Pitt's theorem? I couldn't locate the origin of the statement.
2026-03-29 17:31:34.1774805494
Pitt's theorem on automatic compactness of bounded operators between sequence spaces
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In the book Topics in Banach space theory. F. Albiac, N. Kalton on the page 31 it is said that the originall paper is A Note on Bilinear Forms J. London Math. Soc. (1936) s1-11 (3): 174-180.