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A weird relation between two cardinals |
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| Authors: | Lorenz Halbeisen | |
| Affiliation: | 1.Department of Mathematics,ETH Zentrum,Zürich,Switzerland | |
| Abstract: | For a set M, let ({text {seq}}(M)) denote the set of all finite sequences which can be formed with elements of M, and let ([M]^2) denote the set of all 2-element subsets of M. Furthermore, for a set A, let Open image in new window A. It will be shown that the following statement is consistent with Zermelo–Fraenkel Set Theory (textsf {ZF}): There exists a set M such that Open image in new window Open image in new window | |
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