On ${\rm DEPTH}$ and ${\rm DEPTH}^+$ of Boolean Algebras

by Garti and Shelah. [GaSh:878]
Algebra Universalis, 2008
We show that the Depth^+ of an ultraproduct of Boolean Algebras, can not jump over the Depth^+ of every component by more than one cardinality. We can have, consequently, similar results for the Depth invariant


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