Skip to main content
1 of 3
Nik Weaver
  • 42.8k
  • 3
  • 112
  • 213

Yes, easily. Consider all well-ordered sequences $(A_\alpha)$, of any length, such that each $A_\alpha$ is infinite and satisfying your almost containment condition. Make one such sequence less than another if the first is an initial segment of the second. Zornicate to get a maximal such sequence, and it is easy to show that a maximal sequence cannot have countable length.

Nik Weaver
  • 42.8k
  • 3
  • 112
  • 213