Symmetric subspaces of $l_1$ with large projection constants
Volume 134 / 1999
Studia Mathematica 134 (1999), 119-133
DOI: 10.4064/sm-134-2-119-133
Abstract
We construct k-dimensional (k ≥ 3) subspaces $V^k$ of $l_1$, with a very simple structure and with projection constant satisfying $λ(V^k) ≥ λ(V^k,l_1) > λ(l_2^{(k)})$.
