A complete first-order logic with infinitary predicates
Corrections to the paper "From accessible to inaccessible cardinals" (Fundamenta Mathematicae 53 (1964) pp. 225-308)
From accessible to inaccessible cardinals (Results holding for all accessible cardinal numbers and the problem of their extension to inaccessible ones)
On Some Results of Jonnsson and Tarski Concerning Free Algebras.
Categoricity without equality
We study categoricity in power for reduced models of first order logic without equality.
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