Span, chainability and the continua H* and Iu
K. P. Hart, B. J. van der Steeg
math.GNarXiv:math/0308162
Abstract
We show that the continua Iu and H* are non-chainable and have span nonzero. Under CH this can be strengthened to surjective symmetric span nonzero. We discuss the logical consequences of this.
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