Good frames in the Hart–Shelah example

Archive for Mathematical Logic 57 (5-6):687-712 (2018)

Abstract
For a fixed natural number \, the Hart–Shelah example is an abstract elementary class with amalgamation that is categorical exactly in the infinite cardinals less than or equal to \. We investigate recently-isolated properties of AECs in the setting of this example. We isolate the exact amount of type-shortness holding in the example and show that it has a type-full good \-frame which fails the existence property for uniqueness triples. This gives the first example of such a frame. Along the way, we develop new tools to build and analyze good frames.
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DOI 10.1007/s00153-017-0599-7
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References found in this work BETA

Building Independence Relations in Abstract Elementary Classes.Sebastien Vasey - 2016 - Annals of Pure and Applied Logic 167 (11):1029-1092.
Forking and Superstability in Tame Aecs.Sebastien Vasey - 2016 - Journal of Symbolic Logic 81 (1):357-383.
Canonical Forking in AECs.Will Boney, Rami Grossberg, Alexei Kolesnikov & Sebastien Vasey - 2016 - Annals of Pure and Applied Logic 167 (7):590-613.
Tameness From Large Cardinal Axioms.Will Boney - 2014 - Journal of Symbolic Logic 79 (4):1092-1119.

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