By Will Boney and Sebastien Vasey

We point out a gap in Shelah's proof of the following result: *\mathbf{Claim}* Let *K* be an abstract elementary class categorical in unboundedly many cardinals. Then there exists a cardinal *\lambda* such that whenever *M, N \in K* have size at least *\lambda*, *M \le N* if and only if... Show more

October 16, 2015

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Categoricity and infinitary logics

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