FOM: Shelah talk

Matthew Frank mfrank at
Sat Aug 12 16:32:28 EDT 2000

People might be interested to hear what Saharon Shelah said in
his talk at the AMS meeting on Mathematical Challenges of the 21st

(aleph_omega) ^ (aleph_nought) < aleph_(aleph_4))

and we would like to know if the right hand side can be reduced.
He pointed out that this is of interest as a question of cardinal
arithmetic different from the continuum hypothesis, perhaps not as
independent of ZFC.  --Matt

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