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arXiv · 1503.04745

An Inverse Ackermannian Lower Bound on the Local Unconditionality Constant of the James Space

Henry Towsner
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Abstract

The proof that the James space is not locally unconditional appears to be non-constructive, since it makes use of an ultraproduct construction. Using proof mining, we extract a constructive proof and obtain a lower bound on the growth of the local unconditionality constants.

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Henry Towsner. 2015-03-16. An Inverse Ackermannian Lower Bound on the Local Unconditionality Constant of the James Space. https://arxiv.org/abs/1503.04745

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