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We first include a result of the second author showing that the Banach space S is complementably minimal. We then show that every block sequence of the unit vector basis of S has a subsequence which spans a space isomorphic to its square. By the Pełczyński decomposition method it follows that every basic sequence in S which spans a space complemented in S has a subsequence which spans a space isomorphic to S (i.e. S is a subsequentially prime space).
G. Androulakis, and T. Schlumprecht. "The Banach space S is complementably minimal and subsequentially prime." Studia Mathematica 156.3 (2003): 227-242. <http://eudml.org/doc/285213>.
@article{G2003, abstract = {We first include a result of the second author showing that the Banach space S is complementably minimal. We then show that every block sequence of the unit vector basis of S has a subsequence which spans a space isomorphic to its square. By the Pełczyński decomposition method it follows that every basic sequence in S which spans a space complemented in S has a subsequence which spans a space isomorphic to S (i.e. S is a subsequentially prime space).}, author = {G. Androulakis, T. Schlumprecht}, journal = {Studia Mathematica}, keywords = {subsequentially prime space; complementably minimal}, language = {eng}, number = {3}, pages = {227-242}, title = {The Banach space S is complementably minimal and subsequentially prime}, url = {http://eudml.org/doc/285213}, volume = {156}, year = {2003}, }
TY - JOUR AU - G. Androulakis AU - T. Schlumprecht TI - The Banach space S is complementably minimal and subsequentially prime JO - Studia Mathematica PY - 2003 VL - 156 IS - 3 SP - 227 EP - 242 AB - We first include a result of the second author showing that the Banach space S is complementably minimal. We then show that every block sequence of the unit vector basis of S has a subsequence which spans a space isomorphic to its square. By the Pełczyński decomposition method it follows that every basic sequence in S which spans a space complemented in S has a subsequence which spans a space isomorphic to S (i.e. S is a subsequentially prime space). LA - eng KW - subsequentially prime space; complementably minimal UR - http://eudml.org/doc/285213 ER -