Abstract
Let \(\rlap{--} x\, = \,(X,\Lambda,T,(x_t )_{t \in T} )\) be a Schauder tree basis and consider the corresponding ℓ2 Baire sum \(T_2 ^{\rlap{--} x}\) associated to \(\rlap{--} x\). The space \(T_2 ^{\rlap{--} x}\) contains, naturally, a complemented copy of every space in the class coded by the Schauder tree basis. Moreover, by Theorem 3.23, there is information on the kind of subspaces present in \(T_2 ^{\rlap{--} x}\). This is enough for a large number of applications. However, by Theorem 3.22, for every interesting Schauder tree basis \(\rlap{--} x\) the space \(T_2 ^{\rlap{--} x}\) contains an isomorphic copy of c 0.
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© 2010 Springer-Verlag Berlin Heidelberg
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Dodos, P. (2010). Amalgamated Spaces. In: Banach Spaces and Descriptive Set Theory: Selected Topics. Lecture Notes in Mathematics(), vol 1993. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-12153-1_4
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DOI: https://doi.org/10.1007/978-3-642-12153-1_4
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