### Dimension blocking categoricity in higher logics

by Shelah and Villaveces. [ShVi:648]

We build an example that generalizes [HaSh:323] to
uncountable cases. In particular, our example yields a sentence
psi in L_{(2^lambda)^+, omega} that is categorical in
lambda, lambda^+, ..., lambda^{+k} but not in
beth_{k+1}(lambda)^+ . This is connected with the L os
Conjecture and with Shelah's own conjecture and construction of
excellent classes for the psi in L_{omega_1, omega}
case.

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