### Iteration of $\lambda$-complete forcing notions not collapsing $\lambda^+$.

by Roslanowski and Shelah. [RoSh:655]

International J Math and Mathematical Sciences, 2001

We look for a parallel to the notion of ``proper forcing'' among
lambda-complete forcing notions not collapsing lambda^+ . We
suggest such a definition and prove that it is preserved by suitable
iterations.

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