Abstract
We look for a parallel to the notion of “proper forcing” among
Open AccessIteration of
Iteration of λ λ +
Received25 Feb 2001
Revised06 Aug 2001
Copyright
Copyright © 2001 Hindawi Publishing Corporation. This is an open access article distributed under the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.