3 ms·
If the continuum hypothesis (CH) holds then there is none. Assume that CH fails and well order the reals. An initial segment of length omega_1 is an example of
by ginnungagap 7y ago
If the continuum hypothesis (CH) holds then there is none.
Assume that CH fails and well order the reals. An initial segment of length omega_1 is an example of such a set.