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$%J. Mújica, Separable quotients of Banach spaces, Rev. Mat. Univ. Complut. Madrid 10 (1997), no. 2, 299–330.%$
In this survey we show that the separable quotient problem for Banach spaces is equivalent to several other problems for Banach space theory. We give also several partial solutions to the problem.
1991 Mathematics Subject Classification: 46B10, 46B15, 46B45, 46A08, 46G20.