On long EF-equivalence in non-isomorphic models

by Shelah. [Sh:836]
Proc Logic Colloquium, Helsinki, August 2003, 2006
There has been much interest on constructing models which are not isomorphic of cardinality lambda but are equivalent under the Ehrenfeucht--Fraisse game of length alpha even for every alpha < lambda . So under G.C.H. we know much. We deal here with constructions of such pairs of models proven in ZFC and get the existence under mild conditions.

Back to the list of publications